Brother: as I write this it is after 2:00 in the morning in upstate NY, on the coldest night of my four years here, currently 14 below zero. Tending to my mother's house while she's out of town, and long story short, her thermostat was dead and no technicians are available, only now I got it back, because of the information you shared here. THANK YOU SO MUCH! 🙏
Thanks for sharing, I'm glad you were able to get the heat turned back on. I always love hearing these kind of stories as it's part of the reason I started the channel and it feels good to be able to help someone solve their problem. I was probably deep asleep when this happened, and it's awesome that a video on the internet I posted years ago can help someone fix something while I'm asleep. Also HVAC systems always seem to have issues at the least convenient times, it's always in the middle of the night, the coldest/hottest day of the year, on a weekend or a holiday. I can't explain the it but nothing ever breaks down on a Monday morning when people are available and stores are open to get a part. I wish you the best and thanks for sharing.
You detail and explanation is second to none. You don't assume everyone knows this stuff and your time spent explaining made the entire difference for someone like myself to have confidence and even learn a few things in the process.
-19° outside this morning when I woke up and had a low battery issue with my nest. With the help of this video I had my system up and running in 4 minutes. Thank you so much!!
Works absolutely perfectly. As someone else said, be aware that when you go to test the system, it may show an Rh no power system fault. Moving the thermostat will not trigger either heat or AC. This happened to me after I flipped the breaker back on to test it out. It was a kill switch on the access panel on the unit. Go back to the air handler and place the door back on, and it will clear that error and fire right up. This was a very very helpful video, especially heading into a NY winter.
Thanks a lot of the great explanation. I don’t have an A/C unit, only hear. Using your information, I moved the Y1 wire to C on both sides and now my nest is charging AND I can use my fan! Awesome, informative tutorial. Thank you :)
That's great to hear! I truly appreciate the Super Thanks as it helps me to keep putting out helpful content! Your support to get to me to 100K subscribers won't be forgotten! Thanks Again!
Man. This is brilliant! Thank you. Single-digit temps in Chicago this week and my Nest thermostat started doing this delay thing yesterday. You've been a literal lifesaver. Appreciative of your great videos. Informative, clear and concise.
I almost NEVER leave comments but I wanted to thank you for helping me out. This worked amazingly well and I’ve had my nest thermostat sitting around the house for almost 2 years with no use ever since I ran into my e103 issue. Thanks again!
Dude. Whoever you are. Thank you. I wish you could do all “how to” videos everywhere. Your instructions were incredibly informative without being too wordy and your information was so clear that I feel completely comfortable doing this myself. Thank you, sir.
Seriously want to thank you as well...Spent close to 2 days on the phone with Nest and they sent me a new backplate but came to the conclusion that i needed a C-wire. This tutorial would've saved me a ton of time.....Thanks again for pulling this together.
Man….. Thank you! My NEST thermostat had been driving me crazy for a year losing power. Very well explained I truly appreciate it. I had no issues it all following your guidance.
Man, I just wanna say thank you so Much! Been having this issue for 2 days and today’s was 30 degrees out with wind and the house was freezing, I saw about 15 videos and no one fixed me issue except you!!!! Thank you for not making me freeze!
I have an 8 month old at home. The Nest stops working (only fan is blowing but no cool air) during 12 pm to 8 pm every day when the temp is around 82 outside. I google the problem and found this fix. It works like a charm. You saved my life!
Dude, this is the second nest video, of yours I've viewed this weekend (recently purchased 3 nest thermostats). You're obviously an instructor. You've helped me immensely. I'm not an electrician and contemplated hiring a nest pro. You've saved me $$$ and educated me at the same time. Thank you!
I followed your instructions and sure enough the drain line was gunked up. I cleaned out and it started dripping, the unit kicked on while I was cleaning it out. Went to thermostat and everything was back to normal. Thank you probably saved me a $500 service call by a local hvac company
Outstanding video! Not being able to connect to my thermostat through my app has been a pain in my ass for the last three years. Finally got around to seeing what I could do about it and came across you. Thank you! Subscribed!
Dude....THANK YOU!!!!!!!! I got it to work. Damn Nest could have put a little MORE emphasis on you NEEDING low voltage power to the thermostat. So I was worried that I'd lose my HVAC blower (not fan) to circulate the coolant through the house but as I found one white wire in the "common control panel" already connected, I simply added this fan wire (green) to that instead along with that white along side it and it worked! Thank you for giving us this hack. I'll remember what I'll need when I bring this Nest to my new construction house I'm working on customizing.
We had the Nest thermostat for two years before we started having low battery issues. It was frustrating to wake up during the winter to a cold house because the nest did not have enough battery. Ugh! We watched this video and hubby actually ended up finding a C wire that was just not hooked up to anything. It was tucked into the wire wrap upstairs and wrapped around another wire at the furnace. No need to take the g wire. Thank you for the help!
Wow, thank you for this video! I was going nuts with my Nest thermostat. I couldn’t get the A/C to work. Out off all the Videos I have watched your was the first to explain what the c connection is for and thanks to your expectations my A/C now works! This has saved me what would have been $$$ on hiring an A/C tech.
I am so much thankful to you for the video...I was 5 minutes away deciding to return the Nest thermostat. Finally, shifting G to C worked really well...Very detailed, logical and nicely explained video...Kudos to you for this video...
I just want to say thank you to you. Your calm, well-explained video gave me enough confidence to open up the furnace, hook up the (previously unused) C wire, and hook it up to the Nest thermostat. I was about a half hour away from giving up on the Nest, and buying another thermostat. Now I have to figure out the humidifier, but that is for another day. Thank you!
I just wanted to send you a big thank you. A friend's Nest started to have power issues. I remember from installing it last year that her old thermostat didn't have a C wire. I guess it finally caught up with the Nest. I didn't repurpose the fan control, but I used an unused wire (black) from the bundle to create a C wire for her. Just as easy. I would at least mention that as an option because it's basically the same amount of work.
Thanks Man ! I’m very Grateful for this hack on resolving my Nest thermostat low battery and no wifi issues. Sorry I’m a late comer to your channel but glad I stop to Check it out. I done had my nest thermostat may be 6 years. Having it that long the internal battery will not keep or hold a decent charge anymore. I’m really not a DIY when it come downs to electrical repairs in the house. But I followed your step by step instructions and everything turned out alright. So thanks once again and for saving me $ 250. To have a 5 piece HAVC wiring install in a 1 story house.
Thanks for watching and I appreciate the comment. I'm glad you were able to save money and that's part of the reason I made this channel. It's no fun shelling out cash just to get the stuff you already have to work correctly!
If you a Teo switch hallway staircase,etc, you have a common. My house was built in 43, I bought it rehabbed / not remodeled in 86 and even I have a common. So more often than not, most NOT ALL, but most(I am a remodeler these days) have one
Wow... I think this fixed my problem... I'll see how it works over the next day but if it's truly the needed fix I'll buy you more than one cup of coffee!
Thank you! Great video! I installed an Aprilaire 700M humidifier two years ago. Recently I started to get Nest low power. I did charge the battery, but the issue was not resolved. I decided to replace the senoid valve, but it did not resolve the issue either. I was thinking about installing a new wire from Nest to the furnace, but I was not happy with that idea. This hack has resolved the problem at least for now. I hope I don't experience low power again. I don't care about losing the fan only control. I don't use it.
I think this fixed my AC intermittently deactivating when thermostat still was calling for cooling. I ran AC for an hour now with no short cycling. Thank you @OneHourSmartHome
Wow..first time I’ve seen a real solution to my C wire problem. I replaced a system with R and RC wires and tried hooking up the RC as the common(C) wire but the AC comes on but immediately turns off. I disconnected the C terminal(old RC) and it now works but I still don’t have a C connection. That’s where your solution solves everything. Great idea!!! I will use the Fan G wire for the C, Common!!
dude, such a simple fix, you saved me from running a new wire etc. It was one of those "Duh" moments when I realized what your hack was, mad at myself for not thinking of it in the first place. Thx!
Thanks for this video. Woke up this AM to find my Nest disconnected from WiFi because it lost the power source. Turned out it was using the AC to draw power. We replaced our AC unit this summer and the new one has a low pressure switch that shuts off the AC unit entirely when the weather is very cold. It was -10 overnight so it triggered this shutoff. I was going to have the HVAC folks come out tomorrow to figure out how to fix this, and I would periodically charge the Nest to keep it running until then. This video did the trick so I cancelled the service and probably saved a couple hundred dollars (or more). I’m going to buy the “add-a-wire” kit so I can still use the fan independently if we want. Thanks for the great instructions!
Just wanted to say THANK YOU for this video! I didn't even think to check the wires at the furnace, only the Red and White were hooked to my old one (we only have heat no AC) and of course when I went down there only the red and white were hooked up to the control board. All the wires were right there so green to C on both ends and the thing works! One thing to note, I didn't realize that some furnaces won't run if it detects the panel is off, so I was getting no power to the thermostat and couldn't figure out why - I hadn't replaced the panel on the furnace in case I needed to go check the wiring again.
Thank you! You really helped a lot and kept us from a another cold night. I did something a little different. I have a heat only system so I took the Y (AC) wire that wasn’t being used and used that for my common wire instead of sacrificing me fan G wire. Thank you for the guidance I went from a 3.3v to a 3.7v and my Lin went from a 3mA to a 200mA.
Thank you very much for your video, I fixed my heating problem at 2am, We are at 6° degrees very cold, again thank you very much for sharing your videos
Thank you so much for taking the time to produce this informative, easy to understand tutorial. It's -4 in Detroit today and I woke up to the N262 error message. I replaced the batteries last week and knew they were not the problem. It's odd that my Nest is several years old and I never had this issue before. It makes me wonder a GOOGLE software update was the root causing a demand for the Nest Power Connector device. Either way your easy hack fixed the issue and I never used the blower only feature anyway. Thanks again!
After a failed Nest attempt at our last house with an older heating oil boiler, our house now has a natural gas furnace. Had the lower power issue as there were only three wires going to a dumb digital controller. Well, they had two wires not being used, so instead of stealing the green for a common, I just used one of the others. It’s a new furnace, so it had an open common terminal. So far so good!
Thanks so much. Best simple explanation I have seen of what the various connections on nest are for and great hack for low power problem, which I have been plagued with! Best advice ever!
Thank you so much! I live in an apartment and was freaking out that I purchased something I couldn't use. This hack worked! Couldn't be happier. Thank you again!!
I did this wire switch on my HVAC system, but then my outside AC unit would run without my furnace fan starting. I searched all the comments here, and plenty of others had the same issue, but nobody had a clear answer on how to fix it. I put a jumper wire from Y to G on the furnace circuit board so when the thermostat sends the signal to the AC system to start via the Y wire, it also sends a signal to the G wire which starts the blower fan in your furnace. This works perfectly on my system. Hope this helps anyone else with the same issue.
I agree with others here: very well presented. I’ve sought answers from builders, HVAC guys, electricians and no one has explained the way of Nest and wiring as well as you ... Not even sure if this will solve my problem, but I learned something. ... Moving into a newly-built home nearly two years ago, for some reason, Nest thermostats would not work in the home (and homes in the neighborhood) - Carrier equipment and either standard thermostats or smart thermostats from Aprilaire. I reviewed home wiring, Nest wiring, called Nest tech support, reviewed schematics and product documentation, and everything was in place and ready to go - but it never, ever worked. No one could find an answer. Many of us just gave up and never installed Nests. This makes me want to try again.
I already had a common wire there so for anyone that already has a common wire, my fix was re-stripping the Power(R) and Common(C) wires on both ends (Nest end and the furnace end). My furnace was super simple and had everything labeled. After turning on the furnace breaker, everything kicked in and my app showed Nest was connected.
I woke up to two surprises, the first being -5 degrees here in Denver, and the second was a non-functioning Nest thermostat. Not a good start. However, your troubleshooting steps and detailed explanations had my home toasty warm by mid-morning. Thanks One Hour Smart Home. !!! Can I buy you a coffee?
Did this wire trick with my new wifi thermostat. Worked perfect. Got the green wire marked "c" for any future thermostat changes. Never once used the fan anyway, so this saves alot of time from running a new wire.
Nice video, you are correct, most newer AHUs turn the fan on when there is a call for heat or AC. Problem is, your Blue wire was not connected to the Y terminal on the AHU in the video, thus on a call for AC, the fan will not come on. Very important to not just wire nut the condenser wires, but to wire it to the AHU. Also, it may be a good idea to put a jumper from Y to G to make sure the fan comes on since the thermostat no longer would control the fan and running the AC with out a fan can do a lot of damage to the compressor. Hope you did not damage that unit and figured out your error before you did any damage.
Using the "Nest Thermostat Common Wire Transformer" worked out great! My boiler has only two low voltage (5VA) wires for the thermostat. When I plugged in the two wires to the Nest wiring block heat was called all the time until I unplugged one of the two wires (Rh / W1). I thought I had a defective Nest wiring block. However, I gave the common wire a try and now it's working perfectly. My favorite feature of the Nest is that it knows I have a boiler/radiator setup and has learned if it turns the boiler off a degree or two before reaching temp that the house will still warm up to temp. This is awesome because we no longer have the temp overshooting by 5 degrees. Leaving us feeling like the house is at a consistent temp.
I was about to throw in the towel until I saw this video. I did not want to run a new wire w/ a common to my HVAC unit as it's over the river and through the woods. I'm definitely going to give this a shot and I don't see why it wouldn't work. I have seen a bunch of these videos and have installed a couple of NESTS now and this one is by far the most informative. Thanks a ton.
This is fantastic. As long as you know you are giving up FAN only function. 5 years later, I assume those that used this method of doing a C wire are satisfied ?
Great video...just paid my HVAC guy who knew this hack. I wonder why Nest support doesn't offer this solution. I only spent 1 hour 45 minutes on the phone with them...disappointed in their support after the sale.
Thank you! Mine worked fine for over a year before all of a sudden having issues. Apparently even though they say the C wire is not required, everything I've read said that was the problem and it's pretty common. This fixed my issue perfectly. It's a temporary fix as obviously without the fan wire, you can't run the fan on it's own which I do periodically, but this fixed my issue and got my AC running again on a 90 degree day and only took me 5 minutes after hours of google and frustration. Thanks!!
Have you found any solutions to this? I sacrificed my G fan wire for my AC as well to power the Nest(since its winter now, no AC). So i just have the common wire and no G. Come summer time, i will have to swap them again in the Nest. Will i also have to change the wiring back to the way it was in the AC unit?
@@palmerprod you can buy a Google Nest Power Connector C wire adapter that essentially splices C from the furnace board into the power line to send slightly more power. It can be tricky to install the adapter, for those who don’t have a C terminal located on the furnace board.
My Nest also has power issues. I have a blue wire connected to the Common terminal on my control board but was not connected to my old thermostat. Can I just use this Common wire with the Nest?
This worked for me, sort of. It did solve my low battery problem for the nest thermostat. However, in doing so it also removes your ability to run just the fan by itself (no cooling or heat). For most households this is not a problem, unfortunately it is in my case. I've just purchased the Nest Power Connector to see if that will resolve the issue while maintaining the fan functionality. If it doesn't, I've also read good things about the Fast-Stat Common Maker.
Can u move the the g wire to C terminal and then jump it back to G to keep it working normally? Reason I ask this is I don’t have a common wire to charge thermostat so I plan on using G wire , if as u say the fan will still work without G wire connected.
Do we need to factory reset the Nest? I have a newer version than in the video and the wiring configuration still shows the “G” in blue like the other wires, but now shows C in yellow and says I configured wires.
my townhouse has 3 floors, each with its own thermostat. when i connected the G wire to the C terminal on the main control board, the fuse blew up. Do I also need to switch the G wire to the C terminal on the zone controller as well?
Hey James, Thank you very much for this video. I NEVER use the fan mode on my furnace, so this solution is perfect and FREE. I followed your great instructions, and it worked perfectly. Thanks again.
Hi! Thank you for this video. I have a heat only thermostat with just a red and white wire. I have a taco relay system with 3 zones. I added a the connector to the taco relay and the thermostat only works for a day. Do you have any hack for this?
I did this setup. I maybe upgrading the wire to 5/6 conductor as I do use the Fan (G) I have 2 wood stoves and just having the fan on helps to move that air throughout the house. Thanks for the video.
You are a life saver. Thank you for the video. My furnace has a B/C with two white wires attached to that terminal. Can I still plug in my G wire in this terminal?
Brother: as I write this it is after 2:00 in the morning in upstate NY, on the coldest night of my four years here, currently 14 below zero. Tending to my mother's house while she's out of town, and long story short, her thermostat was dead and no technicians are available, only now I got it back, because of the information you shared here. THANK YOU SO MUCH! 🙏
Thanks for sharing, I'm glad you were able to get the heat turned back on. I always love hearing these kind of stories as it's part of the reason I started the channel and it feels good to be able to help someone solve their problem.
I was probably deep asleep when this happened, and it's awesome that a video on the internet I posted years ago can help someone fix something while I'm asleep.
Also HVAC systems always seem to have issues at the least convenient times, it's always in the middle of the night, the coldest/hottest day of the year, on a weekend or a holiday. I can't explain the it but nothing ever breaks down on a Monday morning when people are available and stores are open to get a part.
I wish you the best and thanks for sharing.
You detail and explanation is second to none. You don't assume everyone knows this stuff and your time spent explaining made the entire difference for someone like myself to have confidence and even learn a few things in the process.
-19° outside this morning when I woke up and had a low battery issue with my nest. With the help of this video I had my system up and running in 4 minutes. Thank you so much!!
THANK YOU!!! All of a sudden my Nest stopped charging. Changing the G to C solved the problem. Much easier than running additional wires.
You still good or any problems happen?
Works absolutely perfectly. As someone else said, be aware that when you go to test the system, it may show an Rh no power system fault. Moving the thermostat will not trigger either heat or AC. This happened to me after I flipped the breaker back on to test it out. It was a kill switch on the access panel on the unit. Go back to the air handler and place the door back on, and it will clear that error and fire right up. This was a very very helpful video, especially heading into a NY winter.
Thanks a lot of the great explanation. I don’t have an A/C unit, only hear. Using your information, I moved the Y1 wire to C on both sides and now my nest is charging AND I can use my fan!
Awesome, informative tutorial. Thank you :)
That's great to hear! I truly appreciate the Super Thanks as it helps me to keep putting out helpful content! Your support to get to me to 100K subscribers won't be forgotten! Thanks Again!
Man. This is brilliant! Thank you. Single-digit temps in Chicago this week and my Nest thermostat started doing this delay thing yesterday. You've been a literal lifesaver. Appreciative of your great videos. Informative, clear and concise.
Crazy thing is I’m in Wisconsin and having the same issue in my apartment! I wasn’t gonna wait for the maintence man to show up. Way to damn cold
Why cant we just jump power from R To C with small wire? using double wire
I almost NEVER leave comments but I wanted to thank you for helping me out. This worked amazingly well and I’ve had my nest thermostat sitting around the house for almost 2 years with no use ever since I ran into my e103 issue. Thanks again!
Glad to help and thanks for the comment! It's always great to hear from people this helped!
Dude. Whoever you are. Thank you. I wish you could do all “how to” videos everywhere. Your instructions were incredibly informative without being too wordy and your information was so clear that I feel completely comfortable doing this myself. Thank you, sir.
Thanks! I appreciate the comment and the support!
@@OneHourSmartHome what if u dnt have a G-wire? i live in a apartment. and dont have access to my hvac system
Seriously want to thank you as well...Spent close to 2 days on the phone with Nest and they sent me a new backplate but came to the conclusion that i needed a C-wire. This tutorial would've saved me a ton of time.....Thanks again for pulling this together.
Glad we could help!
Man….. Thank you! My NEST thermostat had been driving me crazy for a year losing power. Very well explained I truly appreciate it. I had no issues it all following your guidance.
Finally a detailed video with THOROUGH explanation that addresses common questions during this process. Kudos and WELL DONE! Much appreciated!
Man, I just wanna say thank you so Much! Been having this issue for 2 days and today’s was 30 degrees out with wind and the house was freezing, I saw about 15 videos and no one fixed me issue except you!!!! Thank you for not making me freeze!
Looks like this worked for me. Thank you! Took my about 30 minutes start to finish; and I'm minimally handy.
Thanks for all the background info and explanations of how the HVAC wiring works!!! Great teacher 🙂
I have an 8 month old at home. The Nest stops working (only fan is blowing but no cool air) during 12 pm to 8 pm every day when the temp is around 82 outside. I google the problem and found this fix. It works like a charm. You saved my life!
Dude, this is the second nest video, of yours I've viewed this weekend (recently purchased 3 nest thermostats). You're obviously an instructor. You've helped me immensely. I'm not an electrician and contemplated hiring a nest pro. You've saved me $$$ and educated me at the same time. Thank you!
I followed your instructions and sure enough the drain line was gunked up. I cleaned out and it started dripping, the unit kicked on while I was cleaning it out. Went to thermostat and everything was back to normal. Thank you probably saved me a $500 service call by a local hvac company
Outstanding video! Not being able to connect to my thermostat through my app has been a pain in my ass for the last three years. Finally got around to seeing what I could do about it and came across you. Thank you! Subscribed!
Dude....THANK YOU!!!!!!!! I got it to work. Damn Nest could have put a little MORE emphasis on you NEEDING low voltage power to the thermostat.
So I was worried that I'd lose my HVAC blower (not fan) to circulate the coolant through the house but as I found one white wire in the "common control panel" already connected, I simply added this fan wire (green) to that instead along with that white along side it and it worked! Thank you for giving us this hack. I'll remember what I'll need when I bring this Nest to my new construction house I'm working on customizing.
We had the Nest thermostat for two years before we started having low battery issues. It was frustrating to wake up during the winter to a cold house because the nest did not have enough battery. Ugh! We watched this video and hubby actually ended up finding a C wire that was just not hooked up to anything. It was tucked into the wire wrap upstairs and wrapped around another wire at the furnace. No need to take the g wire. Thank you for the help!
Thanks for sharing!
Wow, thank you for this video! I was going nuts with my Nest thermostat. I couldn’t get the A/C to work. Out off all the Videos I have watched your was the first to explain what the c connection is for and thanks to your expectations my A/C now works! This has saved me what would have been $$$ on hiring an A/C tech.
Great to hear! Thanks for watching and subscribing.
⁹9988
I am so much thankful to you for the video...I was 5 minutes away deciding to return the Nest thermostat. Finally, shifting G to C worked really well...Very detailed, logical and nicely explained video...Kudos to you for this video...
This is what I was looking for! I am confident I can do this myself because of your very detailed instructions. Thank You!!
I just want to say thank you to you. Your calm, well-explained video gave me enough confidence to open up the furnace, hook up the (previously unused) C wire, and hook it up to the Nest thermostat. I was about a half hour away from giving up on the Nest, and buying another thermostat. Now I have to figure out the humidifier, but that is for another day. Thank you!
Eric, thanks for the comment. This video we did shows you how to hook up a humidifier: ruclips.net/video/GfxjoSIScwk/видео.html
I just want to say ..... I Love You!!!!!!!!!!!!!!!!!!!!! and Thank you!
I just wanted to send you a big thank you. A friend's Nest started to have power issues. I remember from installing it last year that her old thermostat didn't have a C wire. I guess it finally caught up with the Nest. I didn't repurpose the fan control, but I used an unused wire (black) from the bundle to create a C wire for her. Just as easy. I would at least mention that as an option because it's basically the same amount of work.
Thanks Man ! I’m very Grateful for this hack on resolving my Nest thermostat low battery and no wifi issues. Sorry I’m a late comer to your channel but glad I stop to Check it out. I done had my nest thermostat may be 6 years. Having it that long the internal battery will not keep or hold a decent charge anymore. I’m really not a DIY when it come downs to electrical repairs in the house. But I followed your step by step instructions and everything turned out alright. So thanks once again and for saving me $ 250. To have a 5 piece HAVC wiring install in a 1 story house.
Thanks for watching and I appreciate the comment. I'm glad you were able to save money and that's part of the reason I made this channel. It's no fun shelling out cash just to get the stuff you already have to work correctly!
Is called “Common wire” and is so common that nobody has it
If you a Teo switch hallway staircase,etc, you have a common. My house was built in 43, I bought it rehabbed / not remodeled in 86 and even I have a common. So more often than not, most NOT ALL, but most(I am a remodeler these days) have one
Fantastic comment. And I agree, seems like plenty of ppl don’t have one.
Yes....
It's also bonkers that Blue wire is "commonly" the color of the "Y" wire !
WTAF????
How did that get normalized?!?
BEST COMMENT EVER!!
@@Petroglyph1?? Y is yellow. Common is usually blue
Wow... I think this fixed my problem... I'll see how it works over the next day but if it's truly the needed fix I'll buy you more than one cup of coffee!
Worked perfectly for me. Swapped G into C on the wiring and the furnace and boom, I have working air conditioning. Thanks man.
Glad to hear it helped!
What is your nest show error code ? Are you swapped the G into C in the nest or furnace thank you
Thank you! Great video! I installed an Aprilaire 700M humidifier two years ago. Recently I started to get Nest low power. I did charge the battery, but the issue was not resolved. I decided to replace the senoid valve, but it did not resolve the issue either. I was thinking about installing a new wire from Nest to the furnace, but I was not happy with that idea. This hack has resolved the problem at least for now. I hope I don't experience low power again. I don't care about losing the fan only control. I don't use it.
I think this fixed my AC intermittently deactivating when thermostat still was calling for cooling. I ran AC for an hour now with no short cycling. Thank you @OneHourSmartHome
Great to hear glad to help!
Wow..first time I’ve seen a real solution to my C wire problem. I replaced a system with R and RC wires and tried hooking up the RC as the common(C) wire but the AC comes on but immediately turns off. I disconnected the C terminal(old RC) and it now works but I still don’t have a C connection. That’s where your solution solves everything. Great idea!!! I will use the Fan G wire for the C, Common!!
Awesome, you helped me fix the heat on Christmas eve eve...I feel like a hero. Thank You!!
dude, such a simple fix, you saved me from running a new wire etc. It was one of those "Duh" moments when I realized what your hack was, mad at myself for not thinking of it in the first place. Thx!
Thank you so much for this. Skipped calling a “Nest Pro” and benefited from your work. Thanks!
Thanks for this video. Woke up this AM to find my Nest disconnected from WiFi because it lost the power source. Turned out it was using the AC to draw power. We replaced our AC unit this summer and the new one has a low pressure switch that shuts off the AC unit entirely when the weather is very cold. It was -10 overnight so it triggered this shutoff. I was going to have the HVAC folks come out tomorrow to figure out how to fix this, and I would periodically charge the Nest to keep it running until then. This video did the trick so I cancelled the service and probably saved a couple hundred dollars (or more). I’m going to buy the “add-a-wire” kit so I can still use the fan independently if we want. Thanks for the great instructions!
Just wanted to say THANK YOU for this video! I didn't even think to check the wires at the furnace, only the Red and White were hooked to my old one (we only have heat no AC) and of course when I went down there only the red and white were hooked up to the control board. All the wires were right there so green to C on both ends and the thing works!
One thing to note, I didn't realize that some furnaces won't run if it detects the panel is off, so I was getting no power to the thermostat and couldn't figure out why - I hadn't replaced the panel on the furnace in case I needed to go check the wiring again.
Dude you're the best, it worked took 10 minutes because I had to find the tools, I'm so happy, thank you again, BTW you saved me a bunch of money also
Great to hear! Glad to help you save some money! Have a good weekend!
You are more than a technician, you're a professor. Love.
All technicians are professionals 😅 this comment is so dismissive of the knowledge and skill that goes into a trade
THANK YOU!!!!! My furnace was making banging noises. Very happy to have found this fix!!
Thank you! You really helped a lot and kept us from a another cold night. I did something a little different. I have a heat only system so I took the Y (AC) wire that wasn’t being used and used that for my common wire instead of sacrificing me fan G wire. Thank you for the guidance I went from a 3.3v to a 3.7v and my Lin went from a 3mA to a 200mA.
Thank you very much for your video, I fixed my heating problem at 2am,
We are at 6° degrees very cold, again thank you very much for sharing your videos
Thank you so much for taking the time to produce this informative, easy to understand tutorial. It's -4 in Detroit today and I woke up to the N262 error message. I replaced the batteries last week and knew they were not the problem. It's odd that my Nest is several years old and I never had this issue before. It makes me wonder a GOOGLE software update was the root causing a demand for the Nest Power Connector device. Either way your easy hack fixed the issue and I never used the blower only feature anyway. Thanks again!
After a failed Nest attempt at our last house with an older heating oil boiler, our house now has a natural gas furnace. Had the lower power issue as there were only three wires going to a dumb digital controller. Well, they had two wires not being used, so instead of stealing the green for a common, I just used one of the others. It’s a new furnace, so it had an open common terminal. So far so good!
This is amazing in every way. Thank you for providing these instructions! Worked like a charm!
Thanks so much. Best simple explanation I have seen of what the various connections on nest are for and great hack for low power problem, which I have been plagued with! Best advice ever!
Thank you so much! I live in an apartment and was freaking out that I purchased something I couldn't use. This hack worked! Couldn't be happier. Thank you again!!
Saved me $25 and it works great. Thanks!
I did this wire switch on my HVAC system, but then my outside AC unit would run without my furnace fan starting. I searched all the comments here, and plenty of others had the same issue, but nobody had a clear answer on how to fix it. I put a jumper wire from Y to G on the furnace circuit board so when the thermostat sends the signal to the AC system to start via the Y wire, it also sends a signal to the G wire which starts the blower fan in your furnace. This works perfectly on my system. Hope this helps anyone else with the same issue.
I used my Y1 wire since I don’t have A/C. Thanks a ton for the good descriptions
Absolute genius!! Thank you! I had the same problem and it saved us in Canada with -28 Celsius weather!
Beauty, eh.
I agree with others here: very well presented. I’ve sought answers from builders, HVAC guys, electricians and no one has explained the way of Nest and wiring as well as you ... Not even sure if this will solve my problem, but I learned something. ... Moving into a newly-built home nearly two years ago, for some reason, Nest thermostats would not work in the home (and homes in the neighborhood) - Carrier equipment and either standard thermostats or smart thermostats from Aprilaire. I reviewed home wiring, Nest wiring, called Nest tech support, reviewed schematics and product documentation, and everything was in place and ready to go - but it never, ever worked. No one could find an answer. Many of us just gave up and never installed Nests. This makes me want to try again.
I already had a common wire there so for anyone that already has a common wire, my fix was re-stripping the Power(R) and Common(C) wires on both ends (Nest end and the furnace end). My furnace was super simple and had everything labeled. After turning on the furnace breaker, everything kicked in and my app showed Nest was connected.
I woke up to two surprises, the first being -5 degrees here in Denver, and the second was a non-functioning Nest thermostat. Not a good start. However, your troubleshooting steps and detailed explanations had my home toasty warm by mid-morning. Thanks One Hour Smart Home. !!! Can I buy you a coffee?
Did this wire trick with my new wifi thermostat. Worked perfect. Got the green wire marked "c" for any future thermostat changes. Never once used the fan anyway, so this saves alot of time from running a new wire.
Thanks for watching and the helpful comment!
Truly appreciate you!! Your calm, patient, and intuitive explanation solved the problem like a charm .. 💯💯
Thanks for you comment and support!
QUESTION: Could you just split the green wire at the Nest to both G and C … Can it support powering both Fan Control & powering the Nest ?
You can move the G wire to c, then move G to c at the panel on the furnace. Then put a jumper wire at the thermostat from y to G
Nice video, you are correct, most newer AHUs turn the fan on when there is a call for heat or AC. Problem is, your Blue wire was not connected to the Y terminal on the AHU in the video, thus on a call for AC, the fan will not come on. Very important to not just wire nut the condenser wires, but to wire it to the AHU. Also, it may be a good idea to put a jumper from Y to G to make sure the fan comes on since the thermostat no longer would control the fan and running the AC with out a fan can do a lot of damage to the compressor. Hope you did not damage that unit and figured out your error before you did any damage.
I wonder if this is my problem. I moved the G to C like in the video and just realized that now my AC runs, but the furnace fan doesn't.
Question?
Wouldn't I get same results if I put a jumper cable from G wire to C wire?
Can you jumper the G wire to the common to keep both?
Would adding add in a jumper on the thermostat for the g and c wire and another jumper at the hvac unit do the same thing AND give fan control?
Using the "Nest Thermostat Common Wire Transformer" worked out great! My boiler has only two low voltage (5VA) wires for the thermostat. When I plugged in the two wires to the Nest wiring block heat was called all the time until I unplugged one of the two wires (Rh / W1). I thought I had a defective Nest wiring block. However, I gave the common wire a try and now it's working perfectly.
My favorite feature of the Nest is that it knows I have a boiler/radiator setup and has learned if it turns the boiler off a degree or two before reaching temp that the house will still warm up to temp. This is awesome because we no longer have the temp overshooting by 5 degrees. Leaving us feeling like the house is at a consistent temp.
Thank you so much!!!! You saved me a lot of grief trying to add a common wire.
I was about to throw in the towel until I saw this video. I did not want to run a new wire w/ a common to my HVAC unit as it's over the river and through the woods. I'm definitely going to give this a shot and I don't see why it wouldn't work. I have seen a bunch of these videos and have installed a couple of NESTS now and this one is by far the most informative. Thanks a ton.
Thank you for the comment and glad to help!
This is fantastic. As long as you know you are giving up FAN only function. 5 years later, I assume those that used this method of doing a C wire are satisfied ?
I tried so many other things, but this actually worked - I almost gave up hope on my nest. Thank you!
Glad to help.
Great video...just paid my HVAC guy who knew this hack. I wonder why Nest support doesn't offer this solution. I only spent 1 hour 45 minutes on the phone with them...disappointed in their support after the sale.
Really a well done explanation and video! The option presented worked perfectly - and frankly, who ever turns on just the fan anyway! Thank you!!
Quick question: will this disable my ability to only run the fan without heat or AC since we’re using the fan wire?
Yes you’re using the wire that allows that as the C wire.
Thank you! Mine worked fine for over a year before all of a sudden having issues. Apparently even though they say the C wire is not required, everything I've read said that was the problem and it's pretty common. This fixed my issue perfectly. It's a temporary fix as obviously without the fan wire, you can't run the fan on it's own which I do periodically, but this fixed my issue and got my AC running again on a 90 degree day and only took me 5 minutes after hours of google and frustration. Thanks!!
Have you found any solutions to this? I sacrificed my G fan wire for my AC as well to power the Nest(since its winter now, no AC). So i just have the common wire and no G. Come summer time, i will have to swap them again in the Nest. Will i also have to change the wiring back to the way it was in the AC unit?
@@palmerprod you can buy a Google Nest Power Connector C wire adapter that essentially splices C from the furnace board into the power line to send slightly more power. It can be tricky to install the adapter, for those who don’t have a C terminal located on the furnace board.
This wiring switch worked!! Thank you for the guidance!!
Hi i have tried this but after this my furnace fan haven't working .. Is there any another issue overthere ??
GENIUS!!!!!! Thank you man.. great video.
Glad it helped!
THANK YOU
Fixed my low power issues with my Nest with no common wire by doing this "hack"
My Nest also has power issues. I have a blue wire connected to the Common terminal on my control board but was not connected to my old thermostat. Can I just use this Common wire with the Nest?
Thank you for this video. The nest charged up and is back to transmitting through the internet.
My furnace has a combined orange and white wire(s) going into G. No green. Thoughts? Thanks
Brilliant solution, Excellent presentation. Thank you so very much.
This worked for me, sort of. It did solve my low battery problem for the nest thermostat. However, in doing so it also removes your ability to run just the fan by itself (no cooling or heat). For most households this is not a problem, unfortunately it is in my case. I've just purchased the Nest Power Connector to see if that will resolve the issue while maintaining the fan functionality. If it doesn't, I've also read good things about the Fast-Stat Common Maker.
Nice design, works well and very easy to set up.
Can u move the the g wire to C terminal and then jump it back to G to keep it working normally? Reason I ask this is I don’t have a common wire to charge thermostat so I plan on using G wire , if as u say the fan will still work without G wire connected.
Do we need to factory reset the Nest? I have a newer version than in the video and the wiring configuration still shows the “G” in blue like the other wires, but now shows C in yellow and says I configured wires.
Perfect solution! Thank you so much!
Great video and an amazing hack! Worked perfectly, thank you!
my townhouse has 3 floors, each with its own thermostat. when i connected the G wire to the C terminal on the main control board, the fuse blew up. Do I also need to switch the G wire to the C terminal on the zone controller as well?
Thank you for taking the time to post, This was very informative and helped me out of a problem, Very good job all the way around. Thanks
Hey James,
Thank you very much for this video. I NEVER use the fan mode on my furnace, so this solution is perfect and FREE. I followed your great instructions, and it worked perfectly. Thanks again.
Thank you for the very clear breakdown of each input on the nest!
Thank you for the video. I saw another video doing bridge between Y & C at furnace board to keep the fan option usable. Is this correct?
Hi! Thank you for this video. I have a heat only thermostat with just a red and white wire. I have a taco relay system with 3 zones. I added a the connector to the taco relay and the thermostat only works for a day. Do you have any hack for this?
I did this setup. I maybe upgrading the wire to 5/6 conductor as I do use the Fan (G) I have 2 wood stoves and just having the fan on helps to move that air throughout the house.
Thanks for the video.
You are a life saver. Thank you for the video. My furnace has a B/C with two white wires attached to that terminal. Can I still plug in my G wire in this terminal?
Nice video. Can someone explain why the Yellow wire was connected to the C terminal instead of the Y terminal please?
Many thanks for a great video. This fixed the issue I was having. Only curious why it started happening after being fine for nearly two years.
So, if I currently have a battery powered thermostat with no C wire will I need the C wire adapter?
How can i wire my nest so i can run the indoor blower by itself? I used to be able to until i replaced the furnace. ty
My man!!! Thanks for all the tips! Amazing vedio!
Dude- thanks for the easy fix! Nest thermostat working great now!