-Our Website has FREE Videos, Calculators, Podcasts, Articles, Tips, Quizzes, Q/A: www.acservicetech.com -Tools we use, Our Book, Workbook, and Quick Cards: www.amazon.com/shop/acservicetech -Our E-book, Paperback, Workbook, Quick Cards, Powerpoint, www.acservicetech.com/ac-book -Our E-book: play.google.com/store and search "ac service tech" -Spanish Book & E-book: www.acservicetech.com /store -Facebook Tips: facebook.com/acservicetech -Join our updates list for an email strictly from us for new videos, articles, products and website features! www.acservicetech.com
Wow. That is the most concise, comprehensive and comprehensible video on a furnace I’ve ever seen. Thank you. I actually understood 90% of it and I’m a pianist, haha!
What a great way to explain different parts of a gas furnace, clear, concise and to the point, hope you can upload more of these videos, stay healthy and keep up the great work 👍🏻👍🏻👍🏻👏👏 Thank you 🙏🏻
HI- I just wanted to thank you---I have learned so much from your videos and book. Very good = reliable and applicable information always. Many you tubes have questionable information but yours are always accurate. Today- 3/8 I took the state contractors exam and passed. They had several questions (closed book except for IFGC and IMC books)----and the osha regulations but there were no osha questions. There were like 12 refrig, 10 AC, 10 heating, and then 56 more ---4 on ventilation, 4 on boilers, so on so forth- you know how the test is. Anyway I studied the topics- and I can tell you without any doubt that I got all the heating questions right because of watching 2 videos. One question was "what is unique to high efficiency gas furnaces"--and the answers were like gas valve, draft inducer motor, and something else and the correct answer was (I forget the exact words- but it was the additional heat exchanger). I got that from this video or the one you did with hvac school- the overview of the high effiency furnace. I absolutely got that from you. There was one- "how does the thermostat start the furnace"---and answers were "a- opens gas valve so pilot light can light it, b- thermostat does not control it- furnaces have a special thermostat, c- by energizing a relay that opens the gas valve, starts the draft motor, and ignitor- then starts blower motor when appropriate temperature is reached. I could have guessed it- but again- I totally knew it because of this video or the other one. So- I just wanted to thank you for great applicable video. Keep them coming! I tell all the new guys and will start buying the book for them. I only wish I had bought the electronic copy so I could keept it in my phone- but its all good.
If a gas furnace has a cooling capacity of 5 tons, in general how much smaller can you go on the tonnage rating for the a/c condensing unit and evap. coil? Your videos have helped me immensely btw.. thank you
Hello. Great video. I live in an apartment and the gas furnace stops working during a power outage. Can I connect a vehicle battery or some other power source to the furnace so that it will run during power outage? Thanks
Very useful and educational videos, thanks Craig, can you demonstrate in showing us the smart valve troubleshooting and the electrical path through hot surface igniter , we do appreciate all the efforts that you put to help us , Stay safe and healthy
Prolly I'm late for this video but I have 3 questions. What happens if my furnace doesn't have a inducer motor? Is that the reason the pilot keeps shutting off? And is the pilot supposed to be on all summer long?
Easy bro, inspect with a camera, (inspection camera) stick it in each heat exchanger, youll see it, units 8-15 years most of the time has a split, some units works for a very long time due to a very bad home insulation, or the customer added a room or two to the house so the unit now is under sized, some times a 6 years old furnace has splits In every heat exchanger.
carbon monoxide detector at the supply registers, use a snake video camera through the high temp limit hole or down from the front of the evap through the tin plate, thanks!
Thanks for the great explanation and video! I just had one question. What do the relay switches on the control board actually do? Do they power the blower motor and burners and are they controlled by the thermostat?
Where is the Electronics board usually located at??......I never saw it in my system...is it near the transformer at the bottom?....is it usually inside an enclosure???
@@acservicetechchannel Thank you man for taking the time. Your help is just invaluable. I was able to replace the Tcouple and clean my burners with a little pick device I made. Worked out great. Bless ya.
Best videos!!! Very informational. Thank you. I have a Goodman furnace issue with the inducer motor. When heat is called...it run and then turn off immediately....it kept doing that without locking out. I changed the inducer motor, thermostat and control board....still no work. Do you have any other ideas what might be the problem? Much appreciated if you respond....thank you!
might have an issue with your pressure switch. If the switch is bad, or one of the tubes is clogged, it will not think the inducer is running and shut everything off
@@VanNguyen-ij7sh I know this is an old reply- but for the benefit of those who are reading- on goodmans I have seen the actual draft motor fail. It runs- its quiet- and runs at right speed but it does exactly like you say---runs, lights, turns off after 30 secons or so. I have seen it a few times- only on goodmans. I don't know why. Obviously I have seen pressure switches and other issues too- but if all the pressure switches test properly, and everything is working (except furnace shuts off, starts again, shuts off, etc)- don't overlook that motor. I'm glad you are running and a relatively inexpensive part fixed it. Take care.
sir. is 240 volt coming from the door switch first goes to the transformer and from transformer to the control board OR power goes to the control board first and from control board to the transformer? it would be great if you let me know, thank you. this video is awesome though.
You lost me as soon as you said power goes from the disconnect straight to the board, seems to me it goes to the door switch first, I was hoping to use your videos for training but that basic mistake within the first minute caused me to look for another video.
I have an issue with my Furnace. I have an Led code stating Limit or flame rollout switch is open then after 3 minutes it gives another code limit or flame rollout switch lockout. It says to reset switch or replace fuse link. I have 2 FRS and 1 Limit switch I tested them all but it seems they're all fine. How can I tell which part to replace ?
-Our Website has FREE Videos, Calculators, Podcasts, Articles, Tips, Quizzes, Q/A: www.acservicetech.com
-Tools we use, Our Book, Workbook, and Quick Cards: www.amazon.com/shop/acservicetech
-Our E-book, Paperback, Workbook, Quick Cards, Powerpoint, www.acservicetech.com/ac-book
-Our E-book: play.google.com/store and search "ac service tech"
-Spanish Book & E-book: www.acservicetech.com /store
-Facebook Tips: facebook.com/acservicetech
-Join our updates list for an email strictly from us for new videos, articles, products and website features! www.acservicetech.com
All wreakes thankyou sherimg goo this ouer feild
Thankyou gues welcomed
Craig is bad man…teaching at the highest level.
Wow. That is the most concise, comprehensive and comprehensible video on a furnace I’ve ever seen. Thank you. I actually understood 90% of it and I’m a pianist, haha!
I'm a vet, and I understood 89%
One of the best videos I've seen to clearly explain components and functions.
Wow, thanks!
Don’t ever get rid of these videos. So helpful.
Thank you so much for doing what you do. When I'm not feeling confident I turn to you for wisdom.
You are so welcome
What a great way to explain different parts of a gas furnace, clear, concise and to the point, hope you can upload more of these videos, stay healthy and keep up the great work 👍🏻👍🏻👍🏻👏👏
Thank you 🙏🏻
Thank you very much!
What a great channel. Am not even a HVAC guy. I just find all this stuff interesting. You explain this stuff so well.
Glad you enjoy it!
HI- I just wanted to thank you---I have learned so much from your videos and book. Very good = reliable and applicable information always. Many you tubes have questionable information but yours are always accurate. Today- 3/8 I took the state contractors exam and passed. They had several questions (closed book except for IFGC and IMC books)----and the osha regulations but there were no osha questions. There were like 12 refrig, 10 AC, 10 heating, and then 56 more ---4 on ventilation, 4 on boilers, so on so forth- you know how the test is. Anyway I studied the topics- and I can tell you without any doubt that I got all the heating questions right because of watching 2 videos. One question was "what is unique to high efficiency gas furnaces"--and the answers were like gas valve, draft inducer motor, and something else and the correct answer was (I forget the exact words- but it was the additional heat exchanger). I got that from this video or the one you did with hvac school- the overview of the high effiency furnace. I absolutely got that from you. There was one- "how does the thermostat start the furnace"---and answers were "a- opens gas valve so pilot light can light it, b- thermostat does not control it- furnaces have a special thermostat, c- by energizing a relay that opens the gas valve, starts the draft motor, and ignitor- then starts blower motor when appropriate temperature is reached. I could have guessed it- but again- I totally knew it because of this video or the other one.
So- I just wanted to thank you for great applicable video. Keep them coming! I tell all the new guys and will start buying the book for them. I only wish I had bought the electronic copy so I could keept it in my phone- but its all good.
That is so awesome to hear and very encouraging to hear! Thank you so much for letting me know!!!
Rare to find such a concise step-by-step explanation. Bonus points because it's multi-disciplines. Thank you so much.
Im on spring break, we start back up next week on gas furnaces. I graduate in may, you are a God sent sir. Your work is beyond informative
There is only one God but thank you very much and I am very glad that the videos help!!
In in school and everytime i watch your videos, i feel like i understand alot more ty
Nice hard and fast on how a furnace works. I am learning more and more to be able to keep my equipment running. Thanks!
Glad to help
Moving from Florida to Michigan soon, thanks for teaching me about gas furnaces as it will be relevant to me soon!
Happy to help!
Love your videos. I'm about a year and half to 3/4s in the field(installs), and the knowledge you share is fantastic. Thanks for doing what you do!
Awesome! Thank you!
Thank you sir for making another great video I can actually show this to my new guy to better understand how a furnace works 👍👍😎
Glad to help
Thank you so much. This is very educational to me, a novice home technician.
You always do great informational videos with detail of operation.
Thank you very much!
What a great video...Good for teaching and even a better refresher...Thanks again for doing what you do.
Explained very well 💯.. Just with one video my mind z opened 🤯.. Thanks a lot 👍👍
Thank you for sharing, where I live we get a short winter, so a refresher for heating is a must for me lol
You are so welcome
Wow! Very thorough and good explanation of the components.
Glad you enjoyed it!
Great job better than my Ac instructor.
Wow, thanks
love all your videos as usual .. this one was great, you combine explanation with showing how to test, loved it.
HVAC is awesome.
I have learned so much from this channel!
Great video. Now i know why my bosch is puking water when it runs in furnace mode (rare right now, but not soon).
really awesome video. im in HVAC school.
Good luck!!
Great teaching . Thanks for all you do.
I appreciate that!
Great video very detailed tons of valuable information in regards to the furnace components!!!!
Glad you enjoyed it!
another awesome video!!!! thank you a million for sharing again.
Glad you enjoyed it!
Thanks for the explanation, very good information.
Glad it was helpful!
Easiest, clearest video and explanation I've come across! Thank you!
Glad it helped!
Awesome vid. Thanks for the great explanation.
Glad it was helpful!
This was great! Can you please now perform a full seasonal service routine on this unit?
Very good and detailed of components
Thanks
So nice of you
Thank you for the video sir we'll done
Awesome video. Thank you, Sir.
Very helpful video. Thank you!
Glad it was helpful!
Wow you just can not explain any better than this good job and keep the good work.
Thank you very much!
Great Video. Thank you for sharing
Thanks for watching!
Very helpful!
Excellent tutorial. Big help
Glad it helped
Great refresher!
Great video thanks again for a great one 👍👍
Thanks again!
You are fantastic
If a gas furnace has a cooling capacity of 5 tons, in general how much smaller can you go on the tonnage rating for the a/c condensing unit and evap. coil?
Your videos have helped me immensely btw.. thank you
great video, well explanation
Glad you liked it!
Good information thanks
Man is smart .
Thank you
This helped out alot thanks
Great video, thanks
Glad you liked it!
Can you do a video on fully communicating high efficiency split systems??
Ur the man
Great video!! Thanks!
Great videos thanks 🙏🏽
Glad you like them!
TYVM!!!
Hello. Great video. I live in an apartment and the gas furnace stops working during a power outage. Can I connect a vehicle battery or some other power source to the furnace so that it will run during power outage? Thanks
Excellent video! Are you going to publish another book ? All is useful and appreciated.
Thank you!
Enjoy Tour videos. Tnks.
Very useful and educational videos, thanks Craig, can you demonstrate in showing us the smart valve troubleshooting and the electrical path through hot surface igniter , we do appreciate all the efforts that you put to help us ,
Stay safe and healthy
More to come!
Hi there, how hot can furnace go? Does furnace have manufacture temp? Can furnace go as high as 28 to 30 degree celcius?
Prolly I'm late for this video but I have 3 questions.
What happens if my furnace doesn't have a inducer motor?
Is that the reason the pilot keeps shutting off?
And is the pilot supposed to be on all summer long?
Great stuff.
13:12 "80-180 volts:" at the flame sensor. 120V input to the furnace. Is there a transformer to put out 180 volts? Or did you mean 80-180 mili volts?
good
Hi, so what is the best way to find a cracked heat exchanger? Usually the cracks are so well hidden. Thanks for all your videos.
Easy bro, inspect with a camera, (inspection camera) stick it in each heat exchanger, youll see it, units 8-15 years most of the time has a split, some units works for a very long time due to a very bad home insulation, or the customer added a room or two to the house so the unit now is under sized, some times a 6 years old furnace has splits In every heat exchanger.
if the flame " lifts" up from the burners or has a wavy look to them that is a sign of cracked exchanger..
carbon monoxide detector at the supply registers, use a snake video camera through the high temp limit hole or down from the front of the evap through the tin plate, thanks!
What does the white wire do on the wire junction for the blower motor
You are the AC geek.! My Carrier gas furnace has Psc motor with three speeds, can I convert it to ecm motor?Tha
Gtreat job
Can you plz plz plz do a video like this on a boiler with zone valves as well one with a boiler with the taco zone panel with circulators
Ariel, thank you for letting me know what you would like to see!
These videos are great heat pumps help me out a lot and learning a lot to
use a dollar bill to clean the flame sensor....has just the right texture to clean but not damage it...
Also be very careful with them they are fragile.
The flame sensor is just a stainless steel rod so it can be cleaned with a dollar bill or non soaped steel wool. You won't hurt it, thanks!
@@acservicetechchannel your right i was thinking of the glow plug style igniter
How to replace thermalcoupler on an old furance?
Can you have video on specific function on the control board?
He has some, just search channel.
Look up "acservicetech control board" thanks and also "acservicetech ifc"
Can you make a video on smartvalves?
There are two presently, Look up "ac service tech smart valve" thanks!
helped lot with my...essay
Awesome, glad it helped!
How about the fresh air exchanger that is tied in to my cast iron steam gas furnace ? I HAVE A BURHAM BRAND. THIS IS IN HAMDEM CT.
Thanks for the great explanation and video! I just had one question. What do the relay switches on the control board actually do? Do they power the blower motor and burners and are they controlled by the thermostat?
Electric Furnace video like this one please
Trevor, thanks for letting me know what you would like to see!
Where is the Electronics board usually located at??......I never saw it in my system...is it near the transformer at the bottom?....is it usually inside an enclosure???
It should be in the electrical panel.
If it is an older furnace, there may not be one. Some have ignition boards and older ones use a standing pilot and combination gas valve, thanks!
@@acservicetechchannel Thank you man for taking the time. Your help is just invaluable. I was able to replace the Tcouple and clean my burners with a little pick device I made. Worked out great. Bless ya.
Best videos!!! Very informational. Thank you. I have a Goodman furnace issue with the inducer motor. When heat is called...it run and then turn off immediately....it kept doing that without locking out. I changed the inducer motor, thermostat and control board....still no work. Do you have any other ideas what might be the problem? Much appreciated if you respond....thank you!
might have an issue with your pressure switch. If the switch is bad, or one of the tubes is clogged, it will not think the inducer is running and shut everything off
@@jholekg thank Keith for your response. Yes...it’s the pressure switch.
Yes check the pressure switch tubing and clean out the condensate trap and tubes when detached from the pressure switch, thanks!
@@acservicetechchannel thank you for responding!!!!!
@@VanNguyen-ij7sh I know this is an old reply- but for the benefit of those who are reading- on goodmans I have seen the actual draft motor fail. It runs- its quiet- and runs at right speed but it does exactly like you say---runs, lights, turns off after 30 secons or so. I have seen it a few times- only on goodmans. I don't know why. Obviously I have seen pressure switches and other issues too- but if all the pressure switches test properly, and everything is working (except furnace shuts off, starts again, shuts off, etc)- don't overlook that motor. I'm glad you are running and a relatively inexpensive part fixed it. Take care.
sir. is 240 volt coming from the door switch first goes to the transformer and from transformer to the control board OR power goes to the control board first and from control board to the transformer? it would be great if you let me know, thank you. this video is awesome though.
In this video, 120v goes to both the transformer and control board at the same time.
Do they have any 90%+ that are NOT condensing?
Excellent.
Many thanks!
If your thermostat does not have a C terminal, do not land the blue wire. I keep running into that…
Where do i get that door switch magnet?
Dope
Cal you have video on the spefick
Why's it sideways
Jajajajaja 20 advertising spots, no good, no good, this HVAC channel used to be my favorite but now became a TV show bussines, its a shame
You lost me as soon as you said power goes from the disconnect straight to the board, seems to me it goes to the door switch first, I was hoping to use your videos for training but that basic mistake within the first minute caused me to look for another video.
I have an issue with my Furnace. I have an Led code stating Limit or flame rollout switch is open then after 3 minutes it gives another code limit or flame rollout switch lockout. It says to reset switch or replace fuse link. I have 2 FRS and 1 Limit switch I tested them all but it seems they're all fine. How can I tell which part to replace ?
Great video. Helpful information. Thank you
Great video! Thank you