This by far the best video for explaining the heat pump itself and the Nest thermostat. All the information provided in this video is just what is needed.
Thank you! I was freaking out a little setting up a nest in my new house because previously I had a very simple system and now I have dual heat and I kept seeing all the warnings about how I could mess up my system. I understand that I’m not a pro and I still could mess it up but these are the same exact wires that I have available to me other than the emergency heat asterisk one. I didn’t necessarily need this video to set it up (already had it done just wanted to double check) but I don’t like setting something like this up without knowing what the wires mean so I really appreciate it.
By far the best video on connecting heat pump and Nest thermostat!!! In addition to the overall, I could not figure out what the black wire was as it was connected at the unit to the white (Aux Heat). This explained the Emergency heat. Thank you!
Thank you! Your video saved the day for me as I was installing Nest Learning thermostat for my heat pump HVAC system in Pflugerville, TX. Your graphic with red outlines was the clincher as I had 7 wires. There were no wiring diagrams provided by Nest engineers, which is so basic for HVAC system variations. Great video and very much appreciate your knowledge and teaching abilities.
You are the best. Just finished setting up the Nest thermostat in the basement which has a heat pump. I also watched your other video for adding a common wire to the unit upstairs. Your explanations are very easy to follow. Thank you...
Thank you so much for this video! I thought I followed the Nest installation instructions exactly, but there was nothing to indicate special wiring for a heat pump. I mis-wired and put the O/B wire in the W1 (like it told me to do...) and got heat only. Thanks for the education!!!
Wow, this solved the issue for me where the Nest was telling me I was wired up as a dual heat source when all I have is electricity. I watched your video and moved the White wire to w aux and moved the brown wire from the W1 slot to the star slot and now it's wired correctly. Thanks so much
Can you explain how to connect and how it operates a heat pump with multistage heat/cool since nest is compatible with 2 stage cooling and 3 stage heating.
This video made my day, after 3 different visits from 3 Professional HVAC they couldn't figure this out. Not too mention the $150 dollars they charged me each time. They would either get my heat pump only producing heat or only cooling. They never connected the reversing valve wire from the control board to the thermostat as the wire is spliced in the middle. I did this myself after confirming and chasing down the wires. I noticed they were both not connected on either end. After watching this video I was able to understand what each wire did and then relate it to my issue.
I have watched two of your videos. You are very good. And, I finally picked up how thermostats manage to work without a common wire.. they steel a little current through the other circuits but do not sink enough to turn them on. That explains it.
Thank you so much! We installed the nest during the fall so never new whether we’d wired it correctly for cooling(we hadn’t) thanks to you we were able to get cool air on the hottest day so far!
I watched this and another video of yours to figure out how to install and fix my Nest. This one specifically addressed my kind of heating system. Thanks!
Just wanted to add a bit of info about heat pumps: Auxilary heat also engages when the heat pump enters "defrost mode" which, (much like a freezer) occurs when the "evaporator" (outdoor coil in this case) ices over tripping the sensor which causes the reversing valve to disengage, turning the system back into an "air conditioner". This causes cold air to blow inside the house. (ya, in heat mode!) So to offset the temperature split, the electric heat strips engage simultaneously until the defrost cycle completes, and the system returns to normal "heat pump" operation (extremely inefficient way to do your heat).
Hello. I think this comment helps with my issue. I have a heat pump that is tuning off before getting to the set point temperature and starts blowing cold air inside in heat mode. I think is because I connected the aux heat (w2) but I don't have the auxilary electric strip ( optional accesory). Should I disconnect the W2 cable? Or adjust some setting in the Nest thermostat?
@@davidportillo6006 Whats the outside air temperature? If the unit is going into defrost because its too cold outside but you dont have an "emergency" electric heat strip, it will blow cold. Although noone should have ever let there be no heat strips unless you live in South Florida, its more likely that the heat strip isnt engaging either because of relay, board, or T-stat.
This was a huge help. Double checked what Google sent me and they had me wiring my heat pump up like a dual fuel setup. This was confusing to me as I have no gas lines going to the house at all. Not entirely their fault as whoever installed the system originally ran the Aux heat as a white wire plugged into a W1 terminal and a black wire plugged into terminal with 2 labels W2/X2 which has to be emergency heat.
Great Video. I watch both your regular HVAC and heatpump videos. I have anest learning thermostat (3rd Gen) for my heat pump (single stage) but looking to change it to 2 stage heat pump (Trane XR16) with a variable speed Air Handler (Trane TEM6) but wasn't sure if can still be used for efficient use of the Heat Pump/Air Handler. I love my Nest and don't want to change the thermostat (if I avoid it)
This is awesome! Only one question- if I have emergency heat and I had two O/B wires (not the common wire), which one goes to the star and which goes to O/B
Excellent video. I have a White-Rodgers 1F92-71. I have 6 wires but I also have jumper wires. Nest online says I don't need jumpers and it appears the Nest thermostat does not allow enough space for more than one wire at the terminals. I'm glad you mentioned the software programming of the Nest. Great video!
If my system has a propane back up how do I handle that in the set up process? This was very well explained, I just need one bit more. Thanks for any insight.
Great Video - Great Information Info: When I was doing the dry run in the Nest App for our all electric heat pump, Nest indicated to make the R connection to RH. Thanks
Most informative video I’ve found on this. Thank you! Q: My thermostat has a jumper from the E (white wire) to AUX (no wire besides the jumper). How does that translate to the nest wiring? I tried hooking up a Sensi smart and it didn’t work so wondering if a nest will.
I made the mistake of installing a Google Nest thermostat on a 110 degree Saturday afternoon. The old thermostat had a white wire going into a W1(O/B) position. I carelessly put this wire in the Nest's W1 position. The system started blowing hot air instead of cool air. The outside box was blowing cool air and I noticed that it said it was a heat pump. Another site said there could be a problem if we had a heat pump system. Upon further inspection, I saw that the label said "O/B". I switched the white wire into the O/B position and now the system in blowing cool air. Thank you very much!
Thank you! This fixed my problem! I installed a nest e thermostat late last spring. When in cooling mode, my draft inducer fan (for heating) was turning off and on continuously when the air conditioner was running. After what you said about sometimes using the "common" wire, it turns out that I had to connect the blue wire to the "C" terminal and also to the "C" terminal on the furnace circuit board. My old t-stat did not use this wire. The nest e directions did not require me to do this. It solved my issue, no more draft inducer fan running during the cooling mode. THANKS!
Hi there, I have a similar problem but in heat mode and emergency heat option. After that our Nest stopped working with the WiFi is getting bad, looks like it’s trying to connect find a connection even if you want to used just like a thermostat with “Do Not Connect” option and sometimes it’s doing a fast reset that doesn’t works because all the time the Nest never find a signal automatically or manually. Now our Heater is turning On and Off every 1 second when the temperature is close to the set temperature and I need to down the temperature to turning Off, so I believe that our system will damage soon. Do you know what’s going on?
This helped me so much. I had an ollllld thermostat that used none of the newer coding so that didn’t help. My common was Black instead of the blue 🤷♂️. Then I had a jumper from W2 to E with the white wire on E. In googles setup it says “remove all jumpers as they aren’t needed” but doesn’t explain why. And Google just immediately recommended a professional install. They could definitely use some of that Google money to have better instructions.
Great video & clear explanations! I live in Hawaii & only have a 2 stage cooling system (Y1 +Y2). I'm trying to install a safety shut off switch on the condensate drain line. Switch instructions say install inline with the RED wires. When I test the RED shutoff connections - the power is lost to the NEST & the AC air handler keeps running - not the desired outcome to shut down the AC. What would you recommend for the shut off inline wiring please?
Oh my goodness! Thank you so much for this amazing video. I feel so smart now fixing the heat pump issue myself. I had warm air, but it would not start my unit outside, so I figured it is a heat pump issue. I checked the wires (which I installed initially) and just pressed the OB cable a bit further in, despite being properly in. Nest recognized some changes in wiring and prompted me to change my heating options, among one of them being the heat pump. Cranked up the target temperature and lo and behold , AC unit outside kicked on. My question is, is the heat pump heating option going to be less expensive then without. Since I had heat already without using the pump. Thank you!! I will subscribe to your channel.
Great video, but my groundsource heat pump existing tstat wiring has an orange and a blue wire. Do I just put them both in the O/B spot on a Nest thermostat?
My heat pump wiring is exactly as you explained it, EXCEPT I’m missing a common wire. My Nest battery is continually low and causing the thermostat to go offline or shutdown entirely , otherwise all works as expected. I bought a 24V AC two wire adapter and connected to Rh and C wires. That isn’t working. Am I wiring the adapter incorrectly? Appreciate any insight. Your videos are brilliant!
I live in Southern Florida and my cooling/heating system uses a heat pump. The thermostat I currently have is a Carrier and has one wire that connects to a O/W2/B port. With the nest, I assume this wire would be connected to the OB port - if that is correct, would the heating coil in the heat pump system turn on if the temperature dropped too low in my house even though there would be no wire connected to the W2/auxiliary heat port? Or does a jumper somehow need to be run between the OB and W2 ports for the coil to turn on?
Thank you bro! My Braeburn has 6 wires but it had R just labeled as R so I wasn’t sure if Rc or Rh and my O/B was just O.... This video let me know that R and O are good to go ;-) thanks
We have a heat pump. On ours, the black and white wire is in the W2 place. They both fit in the old thermostat, but on the Nest when we put the White and Black wires in the same terminal it didn’t work when our system was on cool, it was running on heat. What do we do with the black and white wires? Do they go in separate terminals?
So I have a 2 stage heat and ac american standard system with an emergency heating coil. I also have hot water radiant floor heat that acts like a boiler. I want the radiant heat to be my priority heat and the 2 stage heat pump as my secondary source of heat. Obviously in ac mode the heat pump will be priority. I have a gen 3 nest can you give me a quick rundown of wiring? Will I need a jumper between rc-rh?
Wow great video. Its the first video I have found that actually explains how the wires work before you hook them up in a way anyone can understand. I will be buying a nest thermostat soon and I have always wondered why I have only one red wire but a RC and a RH connection. Makes a lot of sense now that you have explained it. I have a question, I assume the W1 and W2 are probably interchangeable as well is that correct? This is my color scheme, I have a Yellow, Red, Orange, White, Green and Blue. I have a tan also but I believe that's for some kind of remote temperature sensor not sure. But anyway that's for the great video.
That was great, thanks! Would be cool to have an explanation of: if this is the problem, it is likely related to this wire. Also would be good to know which color wires go in these.
My current setup is a Lennox thermostat, and it has a wire going to W1. I’m assuming that that W1 goes to the * on Nest? Thanks for the video! Lots of help.
I have this similar set up, but also have a brown and a black wire that were not used on the old thermostat (no metal is exposed). Is it safe to assume they are just there and not set up to anything? Just have a heat pump with a coil compressor/fan - all electric. Thanks.
Nest thermostat compatible with ac/ radiant heat boiler combo ? I have 5 wires going to old thermostat . I messed up and didn’t take a pic of old setup
I have mine wired like these except the emergency heat. My heat strip wasn't kicking in and when I switched from heat to cool no issues. But when I switched from cool to heat my unit is short cycling. Do have an info what could be going on?
Just had heat pump and air handler updated. Wanted to update thermostat as well. Only problem only 4 wires. They are currently using the the fan wire for the reversing valve. Suggestions on haw to fix?
You could fish new wires to the thermostat. Or if running wires would be a big project you could relocate the thermostat next to the HVAC system where it would be easier to run new wires. Since most of the time you could control the thermostat: amzn.to/3omfvmu from the phone or with Alexa. You can also install Nest thermostat temperature sensors: amzn.to/37sSpEC so that you dial in the heating and cooling to the location your existing thermostat was located or to hold the setpoint for another part of your home.
I have a heat pump for summer cooling and shoulder season heat. For winter I have a wood fired boiler. Have not been able to determine if Nest will work for my setup. Would love your insight. Thanks.
Is there any way to use this device to make a wood pellet stove and heat pump work together? Bought the house with just a wood pellet stove. Installed new set up for that (on a thermostat control) and the heat pump installed has a separate thermostat control. We would love to have both working in cooperation with the other.
Great video!! I was strugling to find If I could use the nest thermostat (Gen 3) for my Mitsubishi Ecodan Heat pump (with heating and cooling) but now Think it should be possible!
Hi there, I have a similar problem but in heat mode and emergency heat option. After that our Nest stopped working with the WiFi is getting bad, looks like it’s trying to connect find a connection even if you want to used just like a thermostat with “Do Not Connect” option and sometimes it’s doing a fast reset that doesn’t works because all the time the Nest never find a signal automatically or manually. Now our Heater is turning On and Off every 1 second when the temperature is close to the set temperature and I need to down the temperature to turning Off, so I believe that our system will damage soon. Do you know what’s going on? Regards.
Thank you, this is great video! I am researching replacing the thermostat for my heat pump and it has all 7 of the connections you outlined here. It is doubtful that I could have wired the device correctly without this. However I would prefer to get the newer 2020 nest that has the 6 wire connections. Is there a way that I could use that instead of the nest learning thermostat?
So I went through the installation process on the Nest app and it’s had me wire it up exactly as you’ve explained here. But when I call for cool air, hot air is coming out of the vents. Any ideas on why this would be? The seven wires on my old thermostat were labeled as follows: AUX (white), E (orange), B (blue), G (green), R (red), C (brown), Y (yellow)
Hey, want to use a nest to tie a gas fire place into my heat pump system. I’m assuming I would likely tie into Rh for a call for heat? That or can I use W2 and the blower in the heat pump as my supplemental heat?
Hi. On my old thermostat I have W1/E (dark brown color) so when I install nest learning thermostat what place i have to put and also I have W2 (white wire ) too . Let me know if possible please.
Question, With a heat pump and a nest. On my air handler circuit board I have a W1 and W2 input. Currently I have them connected together to the W2 from the nest??? Correct? Heat pump operation work correctly at this time.
Question, if using a heat pump with a gas furnace is there any good reason to use the heat pump for heating in addition to cooling? If not I would just connect the Y1 and C to the heat pump, agreed? Thank you, Jack Perlmutter
Have a furnace for heat and a heat pump for cooling. I only want to use the heat pump for cooling, not heating as the furnace is more efficient. Curious to know how you would wire this setup
I have a question about my system. I have seven wires at my Honeywell but two are in the "W2" or "Aux" terminal. I have electric hot air with a central air unit as well. I contacted Nest for support but that was useless.
Thank you for the video. The client has a heat pump and wants to control cooling and heating from baseboard heaters (boiler). Would it be right to disconnect W1 and tie the wire from the boiler control board to W2? On the other hand, he wants to have an emergency T-stat to turn on the heat from the heat pump. Can we do it through the main T-stat using emergency contact? Or it should be a different decision?
Ok so I am so confused, I have watched all the videos and none describe what I have. I have a AC/heatpump outside. But I also have a furnace downstairs that runs off oil. I only have 1 R wire on my old thermostat. I have Y O G R C W E Those are my old thermostat wiring. In the nest, do I hook the E to the star and the W to the W1 on the nest to still have both my heatpump and my furnace as emergency after if gets below 35 degrees outside? Because right now, my thermostat runs off heatpump 35 and up and the oil kicks on at 35 and below.
Thanks for the overview guide. I'm curious if the Nest can be wired to run a gas furnace for auxiliary heat. I'm considering adding a heat pump to my existing heat-only HVAC system and would like to use the furnace when the hear pump would be overtaxed by the exterior temperature (more efficient than the resistive coil). I've also heard of a UK smart device from Homely Energy that will run your heat pump based on current weather conditions and electricity prices. Would be great if that could be combined with a nest for automation.
Thanks for your videos. I don't have a c wire and want to install my nest thermostat. I have the c wire adapter kit that you put on the furnace. I have it hooked up but can't get it to work. How would I hook up the 4 wires to the thermostat after having the adapter on?
I have a 5 ton MRCOOL UNIVERSAL, on the AHU there is a only w1 terminal to activate the element. Does that mean I should have no wire on the * in the nest learning? In my case should the nest handle AUX and Emergency over the same W1 wire? Will I still have emergency option if I redo the software setup? Currently have emergency setup over the * as forced hot air, it's definitely not engaging the emergency heat and I don't think jumperig is the way to go here
Thanks for the video. I need this but still not sure how to wire this up. I have an orange wire that was ran to W1 on my old thermostat and I’m thinking I wired it wrong since I have a heat pump. Does the orange wire need to goto OB spot? My outside unit is not kicking on and just blowing cold air for about 20 minutes and then my heat 2 kicks in and then I have heat. Any info would be much appreciated. TIA!!
Hi - I currently have a Lennox Elite XC16S036 unit, and looking to convert the thermostat to a Nest one. I can account for the Red, White, Blue, and Yellow wires, but I can't understand why there is a Green wire going into the "B" if my Lennox Elite XC16S036 isn't a Heat Pump? Looking for some advice, and thank you for sharing your wisdom!
Your videos are informative and helpful, but my heat pump wiring has only has four wires (with two jumpers) and thus far nothing has worked on the Nest. The jumper between the Y and W troubles me.
Love your videos, thanks. I have a heat pump but my old wiring has two bridges, one from Rc to Rh and one from W to Y. I have the white wire going directly to Y before bridging to W and other than that I only have the orange wire going to O. So I am not sure how to reconfigure these bridges to the Nest?
Hi, I have the exact same issue. Old system bridged Y to W. I tried connecting the Y only (and O, G, and Rh) on the Nest but only cooling works, not heat. Any suggestions much appreciated!
I can not figure mine out. It will turn the blower on but I’m not getting heating or cooling. I have used a couple nests on other heat pump units but my brand new home I can not get it to heat or cool.
Ok cool... now why not make a video explain balance point and how to set that up with a nest thermostat...probably the best explanation on the AUX and E terminals I have found ... and thanks
You have a good explanation about how the system work. I have a heat pump at home and my old thermostat has only four solid color wires (White, Yellow, Red, and Green) from the wall. I am about to replace my Carrier Infinity System thermostat with the NEST that I just bought this week. Pepco gives me $100 rebate, so I only paid $150 via Lowes's store. When I opened my old thermostat up, it consists of white, yellow, red and green and the old thermostat terminal labeled A, B, C, D, S1, and S2. What's the heck? By watching your video, I plan to connect white wire to W2, yellow wire to Y1, Red wire to Rc, and Green wire to G. I hope it works. Please, let me know if I'm wrong. Thanks,
I’d check your indoor unit where the fan is first and see how those colors match up on the unit. You may not have a C, Common, wire which is needed to power the nest fully. If that’s the case this guy has another video for that issue and has an amazon link to parts you’ll need.
@@brianhundley833, Thanks for your response. I called A/C shop which installed my unit. The answer is "NO". Nest thermostat won't work with Carrier Infinity heat pump because it uses binary code. That's why Infinity uses less wires and easy to hook up. I need to buy Carrier digital thermostat to make it works, but it's not cheap. It runs about $600. So, I keep my old one and keep operate it manually instead of phone access.
Great video. However, I did not hear you discuss how to connect a Nest Learning Thermostat (3rd Gen) when you have both a Blue and Orange wires coming from the furnace controller board since the Nest only has a single O/B connection. I tried connecting Orange to O/B and Blue to C, but it does not power the Nest. So what do you do?
I have a dual fuel system with a heat pump and a gas fired furnace as backup, using a 3rd gen Nest thermostat. The heat pump is working fine, but the gas furnace is not turning on when the outside temperature drops below the setpoint where the heat pump should shut off. Not sure if i should be wiring the brown wire to the * terminal, the white wire to the W1? or some other combination? My confusion may lie in whether the gas furnace is emergency heat, or is it auxillary heat? any help would be appreciated in the wiring diagram. Or maybe it is the equipment settings that i need to change?
Set up the gas furnace as AUX heat. Make sure heat pump balance settings are correct this should help: support.google.com/googlenest/answer/9248719?hl=en
This by far the best video for explaining the heat pump itself and the Nest thermostat. All the information provided in this video is just what is needed.
Thank you! I was freaking out a little setting up a nest in my new house because previously I had a very simple system and now I have dual heat and I kept seeing all the warnings about how I could mess up my system. I understand that I’m not a pro and I still could mess it up but these are the same exact wires that I have available to me other than the emergency heat asterisk one. I didn’t necessarily need this video to set it up (already had it done just wanted to double check) but I don’t like setting something like this up without knowing what the wires mean so I really appreciate it.
By far the best video on connecting heat pump and Nest thermostat!!! In addition to the overall, I could not figure out what the black wire was as it was connected at the unit to the white (Aux Heat). This explained the Emergency heat. Thank you!
Thank you! Your video saved the day for me as I was installing Nest Learning thermostat for my heat pump HVAC system in Pflugerville, TX. Your graphic with red outlines was the clincher as I had 7 wires. There were no wiring diagrams provided by Nest engineers, which is so basic for HVAC system variations. Great video and very much appreciate your knowledge and teaching abilities.
You are the best. Just finished setting up the Nest thermostat in the basement which has a heat pump. I also watched your other video for adding a common wire to the unit upstairs. Your explanations are very easy to follow. Thank you...
Thank you so much for this video! I thought I followed the Nest installation instructions exactly, but there was nothing to indicate special wiring for a heat pump. I mis-wired and put the O/B wire in the W1 (like it told me to do...) and got heat only. Thanks for the education!!!
Wow, this solved the issue for me where the Nest was telling me I was wired up as a dual heat source when all I have is electricity. I watched your video and moved the White wire to w aux and moved the brown wire from the W1 slot to the star slot and now it's wired correctly. Thanks so much
My aux heat won’t turn on so I move the white wire to W2 and black wire to * thank you for sharing
you are real teacher thanks for spend time to teach other
Can you explain how to connect and how it operates a heat pump with multistage heat/cool since nest is compatible with 2 stage cooling and 3 stage heating.
Would also love this.
If it's compatible like you mentioned then the 4 electricians I have hired need a worse review.
This video made my day, after 3 different visits from 3 Professional HVAC they couldn't figure this out. Not too mention the $150 dollars they charged me each time. They would either get my heat pump only producing heat or only cooling. They never connected the reversing valve wire from the control board to the thermostat as the wire is spliced in the middle. I did this myself after confirming and chasing down the wires. I noticed they were both not connected on either end. After watching this video I was able to understand what each wire did and then relate it to my issue.
Incredibly informative video, you are an AMAZING teacher! Thank you so much for the clear explanation!
Fixed my O/B issue thanks to you! Cleared out all my devices and set up incorrectly. Was calling for cooling instead of heating.
James did it just like you showed and My Nest was up and running in about 20 minutes. Thanks brother.
Glad to help! Thanks for the comment!
I have watched two of your videos. You are very good. And, I finally picked up how thermostats manage to work without a common wire.. they steel a little current through the other circuits but do not sink enough to turn them on. That explains it.
Thank you so much! We installed the nest during the fall so never new whether we’d wired it correctly for cooling(we hadn’t) thanks to you we were able to get cool air on the hottest day so far!
Great video, you saved me a 100 dollars service call!! I was able to fix it myself
Thanks for your video...very helpful for a novice like me.
I watched this and another video of yours to figure out how to install and fix my Nest. This one specifically addressed my kind of heating system. Thanks!
Just wanted to add a bit of info about heat pumps: Auxilary heat also engages when the heat pump enters "defrost mode" which, (much like a freezer) occurs when the "evaporator" (outdoor coil in this case) ices over tripping the sensor which causes the reversing valve to disengage, turning the system back into an "air conditioner". This causes cold air to blow inside the house. (ya, in heat mode!) So to offset the temperature split, the electric heat strips engage simultaneously until the defrost cycle completes, and the system returns to normal "heat pump" operation (extremely inefficient way to do your heat).
Thanks for the informative comment!
Thanks
Hello. I think this comment helps with my issue. I have a heat pump that is tuning off before getting to the set point temperature and starts blowing cold air inside in heat mode. I think is because I connected the aux heat (w2) but I don't have the auxilary electric strip ( optional accesory). Should I disconnect the W2 cable? Or adjust some setting in the Nest thermostat?
@@davidportillo6006 Whats the outside air temperature? If the unit is going into defrost because its too cold outside but you dont have an "emergency" electric heat strip, it will blow cold. Although noone should have ever let there be no heat strips unless you live in South Florida, its more likely that the heat strip isnt engaging either because of relay, board, or T-stat.
Answered all my questions in 10 minutes. Thanks.
This was a huge help. Double checked what Google sent me and they had me wiring my heat pump up like a dual fuel setup. This was confusing to me as I have no gas lines going to the house at all. Not entirely their fault as whoever installed the system originally ran the Aux heat as a white wire plugged into a W1 terminal and a black wire plugged into terminal with 2 labels W2/X2 which has to be emergency heat.
May I ask if the black or white that has to be going to the * terminal? Thanks!
This was such a massive help wow! Google should have a link to this video with the nest!
Great Video. I watch both your regular HVAC and heatpump videos. I have anest learning thermostat (3rd Gen) for my heat pump (single stage) but looking to change it to 2 stage heat pump (Trane XR16) with a variable speed Air Handler (Trane TEM6) but wasn't sure if can still be used for efficient use of the Heat Pump/Air Handler. I love my Nest and don't want to change the thermostat (if I avoid it)
This is awesome! Only one question- if I have emergency heat and I had two O/B wires (not the common wire), which one goes to the star and which goes to O/B
I know I wish he talked about the colors
@@lofeguy he talked more about the colors in another video
Excellent video. I have a White-Rodgers 1F92-71. I have 6 wires but I also have jumper wires. Nest online says I don't need jumpers and it appears the Nest thermostat does not allow enough space for more than one wire at the terminals. I'm glad you mentioned the software programming of the Nest. Great video!
If my system has a propane back up how do I handle that in the set up process? This was very well explained, I just need one bit more. Thanks for any insight.
This was awesome! Definitely helped get my nest started🙂
😂😂😂 hilarious how you were trying to hold your laugh initially with your wife making an entrance. Great job on the video btw… 👏🏽 👌🏽
Lol, glad you enjoyed thanks for the comment!
Great Video - Great Information
Info: When I was doing the dry run in the Nest App for our all electric heat pump, Nest indicated to make the R connection to RH. Thanks
Like dis dude, broke down da meaning ov every wire and what it does. Damn sure needed dat info for sure👍🏿👍🏿👍🏿👍🏿👍🏿
So I left a smart ass comment on your other AC video but I stand corrected. Excellent work my friend. I judged you too quickly.
Most informative video I’ve found on this. Thank you! Q: My thermostat has a jumper from the E (white wire) to AUX (no wire besides the jumper). How does that translate to the nest wiring? I tried hooking up a Sensi smart and it didn’t work so wondering if a nest will.
I made the mistake of installing a Google Nest thermostat on a 110 degree Saturday afternoon. The old thermostat had a white wire going into a W1(O/B) position. I carelessly put this wire in the Nest's W1 position. The system started blowing hot air instead of cool air. The outside box was blowing cool air and I noticed that it said it was a heat pump. Another site said there could be a problem if we had a heat pump system.
Upon further inspection, I saw that the label said "O/B". I switched the white wire into the O/B position and now the system in blowing cool air.
Thank you very much!
Learned what the ob wire did helped me the nest had it backwards thankyou
Thank you! This fixed my problem! I installed a nest e thermostat late last spring. When in cooling mode, my draft inducer fan (for heating) was turning off and on continuously when the air conditioner was running. After what you said about sometimes using the "common" wire, it turns out that I had to connect the blue wire to the "C" terminal and also to the "C" terminal on the furnace circuit board. My old t-stat did not use this wire. The nest e directions did not require me to do this. It solved my issue, no more draft inducer fan running during the cooling mode. THANKS!
Great to hear your problem was solved. Thanks for the comment and watching.
Hi there, I have a similar problem but in heat mode and emergency heat option. After that our Nest stopped working with the WiFi is getting bad, looks like it’s trying to connect find a connection even if you want to used just like a thermostat with “Do Not Connect” option and sometimes it’s doing a fast reset that doesn’t works because all the time the Nest never find a signal automatically or manually. Now our Heater is turning On and Off every 1 second when the temperature is close to the set temperature and I need to down the temperature to turning Off, so I believe that our system will damage soon. Do you know what’s going on?
This helped me so much. I had an ollllld thermostat that used none of the newer coding so that didn’t help. My common was Black instead of the blue 🤷♂️. Then I had a jumper from W2 to E with the white wire on E. In googles setup it says “remove all jumpers as they aren’t needed” but doesn’t explain why.
And Google just immediately recommended a professional install. They could definitely use some of that Google money to have better instructions.
Great video & clear explanations! I live in Hawaii & only have a 2 stage cooling system (Y1 +Y2). I'm trying to install a safety shut off switch on the condensate drain line. Switch instructions say install inline with the RED wires. When I test the RED shutoff connections - the power is lost to the NEST & the AC air handler keeps running - not the desired outcome to shut down the AC. What would you recommend for the shut off inline wiring please?
Oh my goodness! Thank you so much for this amazing video. I feel so smart now fixing the heat pump issue myself. I had warm air, but it would not start my unit outside, so I figured it is a heat pump issue. I checked the wires (which I installed initially) and just pressed the OB cable a bit further in, despite being properly in. Nest recognized some changes in wiring and prompted me to change my heating options, among one of them being the heat pump. Cranked up the target temperature and lo and behold
, AC unit outside kicked on.
My question is, is the heat pump heating option going to be less expensive then without. Since I had heat already without using the pump. Thank you!! I will subscribe to your channel.
Heat pumps are 2 to 3 times more efficient I read.
ROFL - The wife nice touch. Your reaction priceless!
Great video, but my groundsource heat pump existing tstat wiring has an orange and a blue wire. Do I just put them both in the O/B spot on a Nest thermostat?
Problem explained and solved....Thank you
My heat pump wiring is exactly as you explained it, EXCEPT I’m missing a common wire. My Nest battery is continually low and causing the thermostat to go offline or shutdown entirely , otherwise all works as expected. I bought a 24V AC two wire adapter and connected to Rh and C wires. That isn’t working. Am I wiring the adapter incorrectly? Appreciate any insight. Your videos are brilliant!
Thank you for your help, man. I got it all running.
Thanks for the video saved me some money on professional install
Glad I could help
James you are awesome. Great explanation of the nest. Answered all my questions. System works as designed now.
Does the Model G4cvZ work with a 3H/2C system? I have 8 wires for 3 stage Heat and 2 stage cool. Any suggestions?
I live in Southern Florida and my cooling/heating system uses a heat pump. The thermostat I currently have is a Carrier and has one wire that connects to a O/W2/B port. With the nest, I assume this wire would be connected to the OB port - if that is correct, would the heating coil in the heat pump system turn on if the temperature dropped too low in my house even though there would be no wire connected to the W2/auxiliary heat port? Or does a jumper somehow need to be run between the OB and W2 ports for the coil to turn on?
Thank you bro! My Braeburn has 6 wires but it had R just labeled as R so I wasn’t sure if Rc or Rh and my O/B was just O....
This video let me know that R and O are good to go ;-) thanks
You saved my life, thank you so much!
Thanks for watching glad to help!
After many hours of research, you sealed the deal for me. Thanks!!!!
We have a heat pump. On ours, the black and white wire is in the W2 place. They both fit in the old thermostat, but on the Nest when we put the White and Black wires in the same terminal it didn’t work when our system was on cool, it was running on heat. What do we do with the black and white wires? Do they go in separate terminals?
Thank you for such clear explanation. Highly appreciated!
So I have a 2 stage heat and ac american standard system with an emergency heating coil. I also have hot water radiant floor heat that acts like a boiler. I want the radiant heat to be my priority heat and the 2 stage heat pump as my secondary source of heat. Obviously in ac mode the heat pump will be priority. I have a gen 3 nest can you give me a quick rundown of wiring? Will I need a jumper between rc-rh?
Wow great video. Its the first video I have found that actually explains how the wires work before you hook them up in a way anyone can understand. I will be buying a nest thermostat soon and I have always wondered why I have only one red wire but a RC and a RH connection. Makes a lot of sense now that you have explained it. I have a question, I assume the W1 and W2 are probably interchangeable as well is that correct? This is my color scheme, I have a Yellow, Red, Orange, White, Green and Blue. I have a tan also but I believe that's for some kind of remote temperature sensor not sure. But anyway that's for the great video.
This is a GREAT video. I have a jumper Between w2 and my E wire. Can I keep that jumper wire and be successful in my Nest install?
That was great, thanks! Would be cool to have an explanation of: if this is the problem, it is likely related to this wire. Also would be good to know which color wires go in these.
My current setup is a Lennox thermostat, and it has a wire going to W1. I’m assuming that that W1 goes to the * on Nest?
Thanks for the video! Lots of help.
same question here. my old thermostat has a terminal labeled W1/E... trying to figure out where to put that wire on the new nest thermostat
I have this similar set up, but also have a brown and a black wire that were not used on the old thermostat (no metal is exposed). Is it safe to assume they are just there and not set up to anything? Just have a heat pump with a coil compressor/fan - all electric. Thanks.
Nest thermostat compatible with ac/ radiant heat boiler combo ? I have 5 wires going to old thermostat . I messed up and didn’t take a pic of old setup
Question! What if you have an O & B wire and not OB?
I have mine wired like these except the emergency heat. My heat strip wasn't kicking in and when I switched from heat to cool no issues. But when I switched from cool to heat my unit is short cycling. Do have an info what could be going on?
good video -- wish you had one on Dual fuel -- Heat pump with Gas furnace as aux
Have to done a video on a Honeywell smart thermostat with a heat pump? I got a t5 for Christmas so was looking around for videos to install. Thank you
This is awesome. Simple enough for a layman like me to understand. Thank you Sir.
Thanks for the comment, happy to help!
Fantastic explication! Thank you.
Just had heat pump and air handler updated. Wanted to update thermostat as well. Only problem only 4 wires. They are currently using the the fan wire for the reversing valve. Suggestions on haw to fix?
You could fish new wires to the thermostat. Or if running wires would be a big project you could relocate the thermostat next to the HVAC system where it would be easier to run new wires. Since most of the time you could control the thermostat: amzn.to/3omfvmu from the phone or with Alexa. You can also install Nest thermostat temperature sensors: amzn.to/37sSpEC so that you dial in the heating and cooling to the location your existing thermostat was located or to hold the setpoint for another part of your home.
I have a heat pump for summer cooling and shoulder season heat. For winter I have a wood fired boiler. Have not been able to determine if Nest will work for my setup. Would love your insight. Thanks.
Awesome! This is exactly what my issue was. Thanks
Is there any way to use this device to make a wood pellet stove and heat pump work together? Bought the house with just a wood pellet stove. Installed new set up for that (on a thermostat control) and the heat pump installed has a separate thermostat control. We would love to have both working in cooperation with the other.
Great video!! I was strugling to find If I could use the nest thermostat (Gen 3) for my Mitsubishi Ecodan Heat pump (with heating and cooling) but now Think it should be possible!
Great info and presentation
Hi there, I have a similar problem but in heat mode and emergency heat option. After that our Nest stopped working with the WiFi is getting bad, looks like it’s trying to connect find a connection even if you want to used just like a thermostat with “Do Not Connect” option and sometimes it’s doing a fast reset that doesn’t works because all the time the Nest never find a signal automatically or manually. Now our Heater is turning On and Off every 1 second when the temperature is close to the set temperature and I need to down the temperature to turning Off, so I believe that our system will damage soon. Do you know what’s going on?
Regards.
Thank you, this is great video! I am researching replacing the thermostat for my heat pump and it has all 7 of the connections you outlined here. It is doubtful that I could have wired the device correctly without this. However I would prefer to get the newer 2020 nest that has the 6 wire connections. Is there a way that I could use that instead of the nest learning thermostat?
I have this same question!🤔
me too
Same question except i already have 7 wires and the 2020 Nest AND i can't find an answer? Anyone just twist 2 wires together and test it out?
So I went through the installation process on the Nest app and it’s had me wire it up exactly as you’ve explained here. But when I call for cool air, hot air is coming out of the vents. Any ideas on why this would be?
The seven wires on my old thermostat were labeled as follows: AUX (white), E (orange), B (blue), G (green), R (red), C (brown), Y (yellow)
Is there a video covering the Amazon thermostat with a heat pump? I wired mine and the Aux heat is shown as running.
Hey, want to use a nest to tie a gas fire place into my heat pump system. I’m assuming I would likely tie into Rh for a call for heat? That or can I use W2 and the blower in the heat pump as my supplemental heat?
Hi. On my old thermostat I have W1/E (dark brown color) so when I install nest learning thermostat what place i have to put and also I have W2 (white wire ) too . Let me know if possible please.
Question, With a heat pump and a nest. On my air handler circuit board I have a W1 and W2 input. Currently I have them connected together to the W2 from the nest??? Correct? Heat pump operation work correctly at this time.
Question, if using a heat pump with a gas furnace is there any good reason to use the heat pump for heating in addition to cooling? If not I would just connect the Y1 and C to the heat pump, agreed? Thank you, Jack Perlmutter
Awesome video! Thank you so much!
Have a furnace for heat and a heat pump for cooling. I only want to use the heat pump for cooling, not heating as the furnace is more efficient. Curious to know how you would wire this setup
I have a question about my system. I have seven wires at my Honeywell but two are in the "W2" or "Aux" terminal. I have electric hot air with a central air unit as well. I contacted Nest for support but that was useless.
Asking if you you have received an answer or any clarification regarding 7 wires my nest has 6 connections
Thank you for the video. The client has a heat pump and wants to control cooling and heating from baseboard heaters (boiler). Would it be right to disconnect W1 and tie the wire from the boiler control board to W2? On the other hand, he wants to have an emergency T-stat to turn on the heat from the heat pump. Can we do it through the main T-stat using emergency contact? Or it should be a different decision?
Ok so I am so confused, I have watched all the videos and none describe what I have. I have a AC/heatpump outside. But I also have a furnace downstairs that runs off oil. I only have 1 R wire on my old thermostat.
I have Y O G R C W E
Those are my old thermostat wiring.
In the nest, do I hook the E to the star and the W to the W1 on the nest to still have both my heatpump and my furnace as emergency after if gets below 35 degrees outside? Because right now, my thermostat runs off heatpump 35 and up and the oil kicks on at 35 and below.
Thanks for the overview guide. I'm curious if the Nest can be wired to run a gas furnace for auxiliary heat. I'm considering adding a heat pump to my existing heat-only HVAC system and would like to use the furnace when the hear pump would be overtaxed by the exterior temperature (more efficient than the resistive coil). I've also heard of a UK smart device from Homely Energy that will run your heat pump based on current weather conditions and electricity prices. Would be great if that could be combined with a nest for automation.
Thanks for your videos. I don't have a c wire and want to install my nest thermostat. I have the c wire adapter kit that you put on the furnace. I have it hooked up but can't get it to work. How would I hook up the 4 wires to the thermostat after having the adapter on?
I have a 5 ton MRCOOL UNIVERSAL, on the AHU there is a only w1 terminal to activate the element. Does that mean I should have no wire on the * in the nest learning?
In my case should the nest handle AUX and Emergency over the same W1 wire?
Will I still have emergency option if I redo the software setup? Currently have emergency setup over the * as forced hot air, it's definitely not engaging the emergency heat and I don't think jumperig is the way to go here
Thanks for the video. I need this but still not sure how to wire this up. I have an orange wire that was ran to W1 on my old thermostat and I’m thinking I wired it wrong since I have a heat pump. Does the orange wire need to goto OB spot? My outside unit is not kicking on and just blowing cold air for about 20 minutes and then my heat 2 kicks in and then I have heat. Any info would be much appreciated. TIA!!
Do you have a wire for wire color coded some heat pump thermostats arent the same colors or labeled to keep you from being able to do this
Does nest thermostats has any pre set temp for aux heat to come on when is 3 degree different from the target? And how can i set it up!
Nest 4th gen thermostat - should the heat pump activation set up be seasonally or each cycle? I use heat and cool year round?
Hi - I currently have a Lennox Elite XC16S036 unit, and looking to convert the thermostat to a Nest one. I can account for the Red, White, Blue, and Yellow wires, but I can't understand why there is a Green wire going into the "B" if my Lennox Elite XC16S036 isn't a Heat Pump? Looking for some advice, and thank you for sharing your wisdom!
Your videos are informative and helpful, but my heat pump wiring has only has four wires (with two jumpers) and thus far nothing has worked on the Nest. The jumper between the Y and W troubles me.
If I have c wire problem with my nest. Can I use the G wire as a c wire without my heat pump breaking down?
Love your videos, thanks. I have a heat pump but my old wiring has two bridges, one from Rc to Rh and one from W to Y. I have the white wire going directly to Y before bridging to W and other than that I only have the orange wire going to O. So I am not sure how to reconfigure these bridges to the Nest?
The same wiring with me. G.O. RC jump to RH and W jump to Y. Did you know how to wiring now? Do I need C ?please help me
Hi, I have the exact same issue. Old system bridged Y to W. I tried connecting the Y only (and O, G, and Rh) on the Nest but only cooling works, not heat. Any suggestions much appreciated!
I can not figure mine out. It will turn the blower on but I’m not getting heating or cooling. I have used a couple nests on other heat pump units but my brand new home I can not get it to heat or cool.
Ok cool... now why not make a video explain balance point and how to set that up with a nest thermostat...probably the best explanation on the AUX and E terminals I have found ... and thanks
That's a good idea and thanks for sharing in the comments.
You have a good explanation about how the system work. I have a heat pump at home and my old thermostat has only four solid color wires (White, Yellow, Red, and Green) from the wall. I am about to replace my Carrier Infinity System thermostat with the NEST that I just bought this week. Pepco gives me $100 rebate, so I only paid $150 via Lowes's store. When I opened my old thermostat up, it consists of white, yellow, red and green and the old thermostat terminal labeled A, B, C, D, S1, and S2. What's the heck? By watching your video, I plan to connect white wire to W2, yellow wire to Y1, Red wire to Rc, and Green wire to G. I hope it works. Please, let me know if I'm wrong. Thanks,
I’d check your indoor unit where the fan is first and see how those colors match up on the unit. You may not have a C, Common, wire which is needed to power the nest fully. If that’s the case this guy has another video for that issue and has an amazon link to parts you’ll need.
@@brianhundley833,
Thanks for your response. I called A/C shop which installed my unit. The answer is "NO". Nest thermostat won't work with Carrier Infinity heat pump because it uses binary code. That's why Infinity uses less wires and easy to hook up. I need to buy Carrier digital thermostat to make it works, but it's not cheap. It runs about $600. So, I keep my old one and keep operate it manually instead of phone access.
Great video. However, I did not hear you discuss how to connect a Nest Learning Thermostat (3rd Gen) when you have both a Blue and Orange wires coming from the furnace controller board since the Nest only has a single O/B connection. I tried connecting Orange to O/B and Blue to C, but it does not power the Nest. So what do you do?
I have a dual fuel system with a heat pump and a gas fired furnace as backup, using a 3rd gen Nest thermostat. The heat pump is working fine, but the gas furnace is not turning on when the outside temperature drops below the setpoint where the heat pump should shut off. Not sure if i should be wiring the brown wire to the * terminal, the white wire to the W1? or some other combination? My confusion may lie in whether the gas furnace is emergency heat, or is it auxillary heat? any help would be appreciated in the wiring diagram. Or maybe it is the equipment settings that i need to change?
Set up the gas furnace as AUX heat. Make sure heat pump balance settings are correct this should help: support.google.com/googlenest/answer/9248719?hl=en
Great video man by watching this saved me $125 they wanted to install nest thermostat thanks