hello jimmy....my system is about 40 years old....works just fine but I have never seen a control board....the thermostat controls everything. Is that possible? Thanks
I learned after my 10 months that we could’ve took the EPA on our own time. More than half of “Class” quizzes made by the instructor from these videos and the book
When I 1st got hired I was the only one that had an EPA(12 trucks), so the next week they called everyone in and payed for them to get certified! I was the only 🤡 that got 15k+ in debt for mine!
You're really creating a great legacy here Craig - it will live on even after your career is over. Sharing knowledge freely the way you do is one of the more noble things one can do. Bravo
You’re a true educator my guy, been in the field for several decades now,I’d be lying if I say I’ve worked on every unit in this video and don’t need an assist . We forget most of what we work on if we don’t see it on regular basis. I personally need to refresh,and polish my skills every now and then,and believe your channel gives me the best opportunities to do so. Thank you for what you bring to our field Greg 👍🏽👍🏽
Your knowledge and the way you deliver that knowledge lends trust in what you say to be true. With your teaching and a lot of effort anyone could be a professional HVAC tech. Keep up the great work, and thank you.
I have years watching and learning from a true passionate technician. I really appreciate the time you take to share your knowledge with us here. Because of your teachings, I have become a much more confident technician and my knowledge has been expanded. Thank you very much
Your videos are outstanding and very educational. 2nd year service tech here and I always find myself coming back to your videos for refreshers and learning something new! Thanks Craig!
Thank you so much for your kind words! It's awesome to hear that my videos have been helpful on your journey as a service tech. The fact that you're finding value in both refreshers and new insights means a lot. Keep up the great work in your second year, and remember that learning is a continuous process in this ever-evolving field.
Wow, wow, wow, your videos that you are showing online are phenomenal. I was an aircraft mechanic for 20 years then I became a locomotive engineer for the last 16 years, now I’m retired. When it was time to replace a 30 year old furnace I thought why not just get a package AC/furnace unit. After installation, (installed by licensed personal) I opened the panels to get model numbers and serial numbers for warranties. I thought to myself what a mangled spaghetti mess of wiring, all of this just to run a furnace and air conditioner. After realizing the cost of any service call, I decided that I needed to learn how my furnace works. After two months of watching all your videos I’m able to identify what every wire does in my furnace and AC compressor unit. I know what each component does and the purpose of it. I'm still learning some troubleshooting techniques. At this point the only thing that I know that I will not even attempt to do is to, replace any component that will break the integrity of the refrigerant system. If anything needs to be braised/soldered, the cost of having that done will be close to the price of a new unit. Its better just to buy a new unit. I did take an AC course in collage for diesel mechanic in which we had to get a 608 certification. I don't know if you offer that or not, but this would be the place to learn on how to handle refrigerants Every homeowner needs to know how this equipment works, even if they're not going work on it, they still need to know how to maintain it. I can only imagine how many house fires were caused by homeowners neglecting and or being naive towards their furnace and AC units.
Thank you so much I recognize your time involved in creating these videos, I am so happy to find you I know you are a Legacy to the next Generation people that is getting involved in these trade 25 years ago I was involved in clases. Like the one that you giving , I think about the many people that you are blessing with your knowledge, I am retired but like to watch videos like yours thank you for those that you are helping , that’s what I call a human with a Purpose in these world thank you. Because you are putting food in the tables of many family’s with these videos, GOD bless you and your family, thanks to all involved , blessings
Yes ! Craig a want you to know you're the best instructor , and my confidence and skill level in the field is continuing to improve thanks to these videos .
*Love the size and it fits perfectly in a corner but **Fastly.Cool** the whole room. Really like how you can auto adjust how long you want the fan to be on. It is quite but highly effective.*
greg...my system is about 40 years old....works just fine but I have never seen a control board....the thermostat controls everything. Is that possible? Thanks
Craig, you're an excellent instructor. I was a teacher for 13 years and saw your passion for the trade and sharing the knowledge and skills you learned all these years. I went to BFIT in Boston to learn the trade. I am learning a lot from your videos. Plus I already both your books as a bundle but I didn't get the cards. I must have done something wrong when ordering. Great job!
Wow - this was such an amazing crash course! I learned that, once you break the system down to its parts and give context to those parts, everything seems so much simpler. I appreciate you for making this freely available!
Ah if I had these videos when I first started it would have been such a breeze. He’s doing the course work for you. I would brainwash Craig’s videos till it clicked.
The fact that you care enough to watch this stuff and try to follow along means you will do just fine. Refer to these videos when you struggle. Even after you get hired. You got this.
Watch "HVAC School" videos on refrigeration cycle and EPA 608. Fundamentals first. Expansion equals loss of heat and compression equals heat. One coil and fan distributes heat, another coil and fan distributes (loss of heat) cold. Fan speed/size, duct sizing, lineset sizing and coil sizing determines rejection of heat or (loss of heat) cold.
mitch...my system is about 40 years old....works just fine but I have never seen a control board....the thermostat controls everything. Is that possible? Thanks
Glad I found you you wouldn’t happen to have motorhome/camper furnaces handy would you that would be a very interesting component to learn as well will bring you millions of views .
Great Video! On test leads with fluke meters I have often read a small resistance below one ohm. I only would replace the leads if that resistance varies and can add from there. Thanks for excellent lessons.
Im just here cause I'm interested. I'm thankful I didn't go to school for this. This is too much to think about. And this is just some furnaces. Didn't even get into boilers yet or anything else. Crazy how techs figure stuff out. Would drive me crazy. I get distracted very very easily.
Boy did I get a good laugh. Your story of when you went and pulled the silicone carbide HSI earlt on in your career. well.... I am only a second year apprentice, like you, I did the same thing recently and accidentally banged the HSI and it broke into multiple pieces lol. Great video!
I have a high efficiency furnace, according to the tech that came to look at it, but they think we need a new one and its a 2008 model lennox furnace. when do you think one would upgrade a furnace given the age of my furnace. Of course, like a car, one has to maintain it but im a new home owner and learning more each day about our home, including the furnace.
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
Great video - thank you. I am going to replace the furnace in my home that is 6500 feet above sea level. What adjustments or modifications do I need to do at this high altitude? Thank you
Yeah the setup for that video was two weeks of work with two people and 3 full days of editing, plus the knowledge from the field! Thanks for your encouragement!!! Make sure to check out our website too www.acservicetech.com thanks!
Thank you - Great video in explaining everything about the furnace! But I do not understand the explanation of the ground voltage drop test @52:35. Why is the check measurements are in ohms instead of volts? I think you may meant to say is that with the power on (120V), the voltage drop should zero (therefore no resistance ), but if instead the voltage reading is like 0.4 V then that means there is problem (i.e. there is unaccounted resistance somewhere)?
Thank you so very much for your efforts, I have a question, I see a part or two on the installed out on the return they have red wires and blinking indicators, what’s do you call that? and what the purpose of it? Thank you
Is there ANY way that a 90% natural gas furnace could be venting what smells like a faint smell of "car exhaust" or the like!? I feel like when my furnace is on blowing I can detect that. It is not all the time either. It only seems to happen when the temperature goes down to colder temps. Is it possible to have a crack or something like that in the heat exchanger or something that could cause this? Also, I feel that in the summer I can also detect something when the cooling unit is on blowing. I dont know what to think about all of it! ?
Hello, I have a gas furnace and we bought heat pump a few years ago but can't find a person that can program it correctly to provide heat with two zones and be able to switch between gas and heat pump. Will be thankful for your input
On that millivolt gas valve. How important is the wiring colors to terminals? Does it matter where the red and white wires go on the terminals? Will it work with red wire on th and white wire on TH TP?
Is it correct that my 25 year old Carrier 58GSC series upflow furnace does not have an inducer motor? My problem is that I set my thermostat and flip on the furnace power switch but only hear a click or clunk sound but nothing else happens.
Being that old,it might or might not,but it still will have a sequence of operation,what type of ignition?Do you own a meter have you checked voltage,power to furnace,24volts from transformer?If you dont know if you hsve an inducer or not you might want to call a professional.
Hi, My gas furnace starts up like normal and after the main blower turns on and starts heating the house I notice the burner turns off for about 15 seconds then lights back up and continue turning on and off until the house is up to temp and then shuts off? I never noticed this before, is this a normal thing or is there something wrong and if there's something wrong what would it be? thanks, Dave
Why do I smell gas outside of my house but only when I turn my heater on . other then that no gas smell only out side smell and only when I turn my heater on??? Please help. I believe I have a 80 % efficiency furnace.
Craig you have a true teaching gift! So much appreciate you providing all your information to us technicians. Thank you!
Glad you are enjoying the videos Jimmy! Thanks for your kind words!
I agree. I have learned so much from Craig. If you don’t have his book, get it, it’s very well laid out and has an insane amount of information in it.
@@acservicetechchannel CDC C
❤😊
hello jimmy....my system is about 40 years old....works just fine but I have never seen a control board....the thermostat controls everything. Is that possible? Thanks
It’s makes me mad I paid 15k for trades school when everything I learned was in this video smh 😢
15k!? That's wild. For a full ticket here, it's about 7g
No lie g I’m down 20 learned more from my man here
I learned after my 10 months that we could’ve took the EPA on our own time. More than half of “Class” quizzes made by the instructor from these videos and the book
When I 1st got hired I was the only one that had an EPA(12 trucks), so the next week they called everyone in and payed for them to get certified!
I was the only 🤡 that got 15k+ in debt for mine!
Same story here bro 😢
You're really creating a great legacy here Craig - it will live on even after your career is over. Sharing knowledge freely the way you do is one of the more noble things one can do. Bravo
Hvac techs don't die ...ever. lol
New hvac student here the sequence of operations in the beginning is a lifesaver. I’m sure the rest will come to me with experience
Keep learning and add one thing at a time!!
You’re a true educator my guy, been in the field for several decades now,I’d be lying if I say I’ve worked on every unit in this video and don’t need an assist . We forget most of what we work on if we don’t see it on regular basis. I personally need to refresh,and polish my skills every now and then,and believe your channel gives me the best opportunities to do so. Thank you for what you bring to our field Greg 👍🏽👍🏽
I’m a newer technician, just moved from South Carolina to Ohio. Your videos have been a tremendous help getting me up to speed!
Your knowledge and the way you deliver that knowledge lends trust in what you say to be true.
With your teaching and a lot of effort anyone could be a professional HVAC tech.
Keep up the great work, and thank you.
Thank you so much JJ James!
I have years watching and learning from a true passionate technician. I really appreciate the time you take to share your knowledge with us here.
Because of your teachings, I have become a much more confident technician and my knowledge has been expanded. Thank you very much
Your videos are outstanding and very educational. 2nd year service tech here and I always find myself coming back to your videos for refreshers and learning something new! Thanks Craig!
Thank you so much for your kind words! It's awesome to hear that my videos have been helpful on your journey as a service tech. The fact that you're finding value in both refreshers and new insights means a lot. Keep up the great work in your second year, and remember that learning is a continuous process in this ever-evolving field.
Wow, wow, wow, your videos that you are showing online are phenomenal. I was an aircraft mechanic for 20 years then I became a locomotive engineer for the last 16 years, now I’m retired. When it was time to replace a 30 year old furnace I thought why not just get a package AC/furnace unit. After installation, (installed by licensed personal) I opened the panels to get model numbers and serial numbers for warranties. I thought to myself what a mangled spaghetti mess of wiring, all of this just to run a furnace and air conditioner. After realizing the cost of any service call, I decided that I needed to learn how my furnace works.
After two months of watching all your videos I’m able to identify what every wire does in my furnace and AC compressor unit. I know what each component does and the purpose of it. I'm still learning some troubleshooting techniques. At this point the only thing that I know that I will not even attempt to do is to, replace any component that will break the integrity of the refrigerant system. If anything needs to be braised/soldered, the cost of having that done will be close to the price of a new unit. Its better just to buy a new unit. I did take an AC course in collage for diesel mechanic in which we had to get a 608 certification. I don't know if you offer that or not, but this would be the place to learn on how to handle refrigerants
Every homeowner needs to know how this equipment works, even if they're not going work on it, they still need to know how to maintain it. I can only imagine how many house fires were caused by homeowners neglecting and or being naive towards their furnace and AC units.
Thank you so much I recognize your time involved in creating these videos, I am so happy to find you I know you are a Legacy to the next Generation people that is getting involved in these trade 25 years ago I was involved in clases. Like the one that you giving , I think about the many people that you are blessing with your knowledge, I am retired but like to watch videos like yours thank you for those that you are helping , that’s what I call a human with a Purpose in these world thank you. Because you are putting food in the tables of many family’s with these videos, GOD bless you and your family, thanks to all involved , blessings
I've been watching you for years. These training videos are great. They have helped me so much. Thank you.
You tube should high value this content it is helping a lot of people to grow and be better or become a help to society.
Craig is such a master teacher that it’s almost a joke.
The greatest part of knowledge, is sharing it… thank you sir
Yes ! Craig a want you to know you're the best instructor , and my confidence and skill level in the field is continuing to improve thanks to these videos .
Thank you for the high praise!
*Love the size and it fits perfectly in a corner but **Fastly.Cool** the whole room. Really like how you can auto adjust how long you want the fan to be on. It is quite but highly effective.*
Can you switch out gas valve electric heater element
Reason why I'm going to do gas is too high
"very much easier" ac service tech is one of my favorite channels
This is so excellent, I wish I had this when I first started. Great job, and thank you for this free knowledge
I’m going into my 3rd year in the trade, and into my 2nd heating season as a service tech. This video was a nice little refresher.
greg...my system is about 40 years old....works just fine but I have never seen a control board....the thermostat controls everything. Is that possible? Thanks
Craig, you're an excellent instructor. I was a teacher for 13 years and saw your passion for the trade and sharing the knowledge and skills you learned all these years. I went to BFIT in Boston to learn the trade. I am learning a lot from your videos. Plus I already both your books as a bundle but I didn't get the cards. I must have done something wrong when ordering. Great job!
Wow - this was such an amazing crash course! I learned that, once you break the system down to its parts and give context to those parts, everything seems so much simpler. I appreciate you for making this freely available!
I went to school I didn't learn much with this guy Im really learning
Great class for gas furnace, much appreciate your generous sharing with us. God bless you!
Thanks for all you doing for this community
Starting HVAC school in about a week and I’m super nervous don’t know much but these videos are a big help 😬😬😬
Ah if I had these videos when I first started it would have been such a breeze. He’s doing the course work for you. I would brainwash Craig’s videos till it clicked.
The fact that you care enough to watch this stuff and try to follow along means you will do just fine. Refer to these videos when you struggle. Even after you get hired. You got this.
Watch "HVAC School" videos on refrigeration cycle and EPA 608. Fundamentals first. Expansion equals loss of heat and compression equals heat. One coil and fan distributes heat, another coil and fan distributes (loss of heat) cold. Fan speed/size, duct sizing, lineset sizing and coil sizing determines rejection of heat or (loss of heat) cold.
How's school going bro??
Hello, Craig, when will you come out with a furnace class book? Roy Fields
Another one of your excellent videos saved to my favorites to be passed to younger technicians asking questions about this topic 👍
What an incredible history/educational lesson!
Thanks so much Paul!
Fantastic teaching
Great content, very thorough and informative. Thank you!
Awesome instruction, my friend. Clear, informative, and applicable. 👍👍
This channel has made me such a better technician. Thank you so much!
mitch...my system is about 40 years old....works just fine but I have never seen a control board....the thermostat controls everything. Is that possible? Thanks
All the content on this channel is GOLD!
Glad I found you you wouldn’t happen to have motorhome/camper furnaces handy would you that would be a very interesting component to learn as well will bring you millions of views .
GREAT presentation. Thank you for sharing your knowledge. Keep up the great work.
Great Video! On test leads with fluke meters I have often read a small resistance below one ohm. I only would replace the leads if that resistance varies and can add from there. Thanks for excellent lessons.
I love all your videos but this one is the best. Thank you
Your channel has helped me and everyone I know! Thank you!
That is so encouraging, thank you!!!
Comment for algorithm. Will watch in full later. Thank you sir.
Best teacher ever I see Craig
this was great thank u
Glad it helped!
Im just here cause I'm interested. I'm thankful I didn't go to school for this. This is too much to think about. And this is just some furnaces. Didn't even get into boilers yet or anything else. Crazy how techs figure stuff out. Would drive me crazy. I get distracted very very easily.
Wishing all at ac service tech an early happy new year from the uk. Really enjoy your classes very informative.
You are HVAC God.
Best training video!
Como.ce.traduce.soy.de.venezuela.
Thanks Ricardo!
Boy did I get a good laugh. Your story of when you went and pulled the silicone carbide HSI earlt on in your career. well.... I am only a second year apprentice, like you, I did the same thing recently and accidentally banged the HSI and it broke into multiple pieces lol. Great video!
is to good to be true ,I see it every season thank you r the best Snoowaircondition houston
You're really good teacher.
Thank You Craig!!
Absolutely educational great job thank you so much
Excellent video!
Nice work,keep em coming
Morris county NJ Native
Thks Man!!!
Another excellent video. Thank you Craig
I really love this
wow, that was a great video!
awesome Craig!!!!! thank you for sharing.
Thank you for sharing your wisdom!
What a great video Craig! You the man! I greatly dislike smart valves 😂
i have to say, this is so awsome and my gas furnace pilot light is off...then i know every part of it...thanks
Impeccable sir! Thank you.
Excellent video. Thanks for sharing.
I have a high efficiency furnace, according to the tech that came to look at it, but they think we need a new one and its a 2008 model lennox furnace. when do you think one would upgrade a furnace given the age of my furnace. Of course, like a car, one has to maintain it but im a new home owner and learning more each day about our home, including the furnace.
Learned a lot, great video.
Very educational 👍
You one of the best .
Thank you, Best wishes
Same to you!
Real great video, packed with great tips and info. Thanks Craig.
You're my hero
That is quite a compliment Eric! I am humbled, thanks brother!
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
Great lecture!
Keep up the good work
EXELENT explanation
Thanks!
Thank you so much for your support!
Great video - thank you.
I am going to replace the furnace in my home that is 6500 feet above sea level. What adjustments or modifications do I need to do at this high altitude?
Thank you
Nice work!
Whoah this video is legit no cap
Yeah the setup for that video was two weeks of work with two people and 3 full days of editing, plus the knowledge from the field! Thanks for your encouragement!!! Make sure to check out our website too www.acservicetech.com thanks!
Extraordinario como siempre mil grscias
Always useful! Thanks
Thank you - Great video in explaining everything about the furnace! But I do not understand the explanation of the ground voltage drop test @52:35. Why is the check measurements are in ohms instead of volts? I think you may meant to say is that with the power on (120V), the voltage drop should zero (therefore no resistance ), but if instead the voltage reading is like 0.4 V then that means there is problem (i.e. there is unaccounted resistance somewhere)?
Amazing video, thanks!
Thanks Sergey!
The thermopil is a generator the pilot heats it and it generates milivolts
Great very informative 👍
Thank you so very much for your efforts, I have a question, I see a part or two on the installed out on the return they have red wires and blinking indicators, what’s do you call that? and what the purpose of it? Thank you
Thanks awesome video!
Good video
Is there ANY way that a 90% natural gas furnace could be venting what smells like a faint smell of "car exhaust" or the like!? I feel like when my furnace is on blowing I can detect that. It is not all the time either. It only seems to happen when the temperature goes down to colder temps. Is it possible to have a crack or something like that in the heat exchanger or something that could cause this? Also, I feel that in the summer I can also detect something when the cooling unit is on blowing. I dont know what to think about all of it! ?
Hello, I have a gas furnace and we bought heat pump a few years ago but can't find a person that can program it correctly to provide heat with two zones and be able to switch between gas and heat pump. Will be thankful for your input
On that millivolt gas valve. How important is the wiring colors to terminals? Does it matter where the red and white wires go on the terminals? Will it work with red wire on th and white wire on TH TP?
Has anyone found any practice test questions or apps specifically for the NATE Support Technician exam?
Is it correct that my 25 year old Carrier 58GSC series upflow furnace does not have an inducer motor? My problem is that I set my thermostat and flip on the furnace power switch but only hear a click or clunk sound but nothing else happens.
Being that old,it might or might not,but it still will have a sequence of operation,what type of ignition?Do you own a meter have you checked voltage,power to furnace,24volts from transformer?If you dont know if you hsve an inducer or not you might want to call a professional.
Hi, My gas furnace starts up like normal and after the main blower turns on and starts heating the house I notice the burner turns off for about 15 seconds then lights back up and continue turning on and off until the house is up to temp and then shuts off? I never noticed this before, is this a normal thing or is there something wrong and if there's something wrong what would it be? thanks, Dave
Great info
Thanks!
Thanks so much Todd!!!
Finally finished watching!🤣
Thanks again for the videos!
🍺🍺🍺🥃🥃⛳🎳
Stay safe.
Retired (werk'n)keyboard super tech. Wear your safety glasses!
I didn't hear teaching about cabon monoxide in haler or ditector.
Gran maestro lo siento pormi no se ingles pero es interesante arreglar esos equipos yo solo me dedico equipos de línea blanca
Why do I smell gas outside of my house but only when I turn my heater on . other then that no gas smell only out side smell and only when I turn my heater on??? Please help. I believe I have a 80 % efficiency furnace.
Love it 🔥
Hi i have a quesition how i can remove vaccum without vaccum pum to the refrigeretor?