Thanks Tad, you're very thorough and that is why you found the cracked heat exchanger, too bad for the customer but good for their health and safety, they were lucky to have you as a service tech.
This was one of those that start out small but cost the customer dearly in the end. You did save the customers and families life. Finding that heat exchanger full of cracks , praise the Lord. Hallelujah.😊😊
Thank you so much for this. I live in Iowa and we recently had 100 degree weather and my ac went out. Now the heat has passed ive found this and after replacing multiple parts (one was actually broken) this helped me truly troubleshoot and confirm. People like you posting these educational videos are real heros to people like me struggling to get by and unable to afford to hire someone.
I really appreciate you. Thank you so much for watching the videos. I'm so glad you let me know how i've helped and that to me means everything you're the.Reason I keep doing these videos
good Job guys, I am an HVAC tech with few years of experience and i just came accross your video out of bordom amd wanted to appreciate what you are doing, keep it up
Very informative and well done video. All the right talking points. I learned a lot. Having come from an Industrial HVAC background, I feel that I have a lot to learn in the residential/commercial sector where I now own a business. This was very helpful. Walla Walla Washington.
Man, I like and enjoy very much your teaching scenarios, and troubleshooting a lot. I do HVAC but not like you residential/commercial. I only do apartments complex and pretty much is the same each day, since is the same property. Every once an awhile I do City Residential. But definitely I'm learning and keep learning by watching your videos. You're the best!
Your video was amazing from start to scratch, well explained, i bet you a camera scope would not find that crack, hard to find cracks with a camera, but you did everything the right way, good job!
I did learn quite a lot from this video. I'm not a pro, but I can usually fix things with the right research, and you just provided some no-nonsense information that's gonna save me a ton of cash. Thank you.
You explained that very well and a lot of helpful information for young technicians learning the trade. My name is Eric and im watching your videos from Baltimore Maryland.
Awesome video. I’m gonna rewatch and take notes. I’m an hvac student in Florida and I am confused about direction but you helped me with information thank you.
I have a furnace with 140 limit switch open, now I can believe it is a cracked heat exchanger. I was speaking with co worker over phone and found it. Thanks for the info.
Great job explaining all the details, Tad!! You are a Natural Teacher; I’m impressed. And now I’m off to see if I can figure why my furnace turns on for 30 seconds and shuts down. Thank You, Kindly, Tad.🙏🏼
I learned a lot from this video. The biggest thing is the way to check in the limit switch is open with the thermistor, thought that it was only used to find super heats
Sir, that was just about the most helpful vids I have seen in a loooong time. Thank you. Saved me a world of headache. BTW I love those Maxi Flex gloves - all I've been using.
dam thats a big ass crack. i always put a box for 3.5 ton ac or anything at a 100kbtu and over. you offered to fix first before replacment. i beleive in building value with the client. when they see you actually care they will throw whatever you offer them. good work. im from illinois lol
A better filter will keep those heat exchangers clean!! 😊 I’ve been doing HVAC for 17 years, I’m located in Eastern middle Tennessee. You make really great videos! Keep it up!!
My furnace stays running nonstop but blows no heat. You can feel the warmth by the vent but no warm air blows. I had two servicemen come but they only offer me to buy a new furnace from them. So far no repair yet. I hope its okay for the next 2 months. Damn they say board is bad $600+, fan motor bad $1000+ and need a new thermostat cuz mine has mercury., and a new furnace will run $4200+++ not including yearly service cleaning. I like to just get it repair but not having to buy a whole new furnace when not necessary... Is there any honest repairman out there???
My boss and the customers think I should be able to do all this in like 20 minutes, by myself in a cramped attic space. lol You pretty knowledgeable tech Taddy. love your vids.
There's definitely a better way to solve this issue and come to the same determination Tad did you definitely don't have to remove the entire heat exchanger to tell that the heat exchanger is cracked There's so many ways to tell this without doing this process
It is helpful to see someone else take time to find out the root problem and not just try and quick fix the symptoms. The part was telling of another fault. Excellent
Great video!!, from duplicating the problem and showing how to diagnose it and then the cause,Thank you for putting this video together. I definitely learned something new. I will now remove my blower and inspect the second burner. You are appreciated Sir.
DUDE YOUR THE MAN, Jan 1, 7 am, 58° in the house. What a way to start a new year. I have several furry animals so I change my filter the 1st of every month. Just so happens I used the last one in the case. It must have been in Nov so I missed Decembers filter. Shut main power, would kick on four 4/5 min, then Shut off. Had no idea lack of air flow would kick it off by being to hot. By the way everything was clean in the furnace with all new A/C 6 months ago, new inducer 1 month ago. Thank you so much for making this video. Have a Prosperous and Happy New Year.
My exact scenario ! House temp dropped to 56 degrees Hot at the heat tubes flames great but look warm heat from all the registers , new filter will pull the blower out and look at the secondary heat exchanger but thinking the worse ,...........
I've been doing this for about about 20 years or more and I always add to returns to the big 90s like that. That dirty coil also could have contributed to that bad exchanger. But I would have never probably caught that without breaking it down myself because it had a rich nice blue and white Flame. In my experience over the years usually when that boy cracks I get some orange in the flame. Thanks for the tips I'll add this in my notes of troubleshooting. Love your content you do an awesome job peace and blessings😂
Considering the space above the units most of the time, i never understand why not lift the unit up and take return from the bottom as well. Good catch on that HX
Really great informative video. I'm having an issue with my garage furnace my cousin sent me this link. I'm a plumber in illinois. The garage heaters a lot different it's one of those ceiling hung units. I changed the limit switch thinking that was the issue. It's not. I'm going to run some tests and check out the coil but this thing just keeps on shutting off on me. I was also going to try and change the thermostat. This thing was working fine and then it just started shutting off after 5 minutes of operation.
DUDE. Thank you for this extremely useful video. Super appreciate you, was able to get my old ass furnace back up and going until a real repair guy came by finding a switch with rusting connectors using your multitool explanation, and deoxidizing the connections! HOORAY
Yes! Taddy So much info. here! This Really Helps us who are out in the field troubleshoot, and be observant to the symptoms we see and the study we've done on heating and A/C. Very Good Video! Thanks! @@TaddyDigest
That's a costumers are looking an a Technician a true if not the good one but find the heat exchanger a crack that saves the family life but at the end it costly damage to the pocket but money is money life is important. I'm retired but still looking to learn something good. From Toronto Canada good job Taddy. Keep up the good work to help costumers.
Tad, you guys in Tennessee really know your ac/heating trade. im glad i follow you bc even tho ive been doing this for 22 years in Fl so no gas furnaces much, i learn something new from you each and every time, cause and effect! Thanks for sharing.
I only service "old school" large industrial boilers. I just had a friend recommended your videos because he knows I love to learn. I wouldn't be working on condensing units, but I loved your video. Like you mentioned, I always want to know what caused a failure to happen so it doesn't repeat it self. Keep up the good work!
I do what you do but I just pull one screw out of limit then stick my “k” type thermometer through that. Or pull limit, foil tape, then poke thermometer through. 😅 100 ways to skin a cat🤷🏼♂️ I’m in year 3 an always refer to your videos, thanks for helping us all out🤘🥃
The thermistor was getting hotter then the rating on the limit because it was possibly sticking in to far. That furnace as most Carrier brands use a baffle to direct the air flow directly at the high limit to cool it off. I’d recommend using a piece of tape to hold the thermistor directly on the limit so it sees what the limit does. Nice find on the plugged secondary. Carrier also put out a bulletin for some of there units showing the insulation deteriorating and puffing up inside the primary section of heat exchanger and directly under the high limit the insulation puffs up and blocks a portion of the air from the blower motor even though the baffle is blowing it directly at it, causing nuisance limit trips. Their solution is to remove the limit and cut half-inch strips of metal tape, approximately 4 inches long and put them through the whole of the limit to secure the insulation back to the jacket. No more limit trips. This bulletin is posted and available.Heil is a carrier brand. Great video thanks.
Hello, do you have some reference material to look at. I am having the same issue. The furnace blower was getting suffocated by the loose insulation above blower motor. The board showed code 33. I removed the loose insulation and still get code 33. I’m planning to replace the limit switch. The gas burners shuts off after couple of minutes. The furnace is about a 4 years old.
@@BigCivilSac I was only referring to what I saw in the video and expanding on what he had done or explained. Unfortunately I have not diagnosed your situation so I wouldn’t be able to offer and useful information. I’d suggest calling a professional in your area. Good luck.
Hmm. If the primary heat exchanger was cracked you should have seen more of a yellow flame within the burners, From what I saw from a quick pass by in the video, they looked a good color of blue. Why quote them on a new unit when you can just change the primary heat exchanger, clean the secondary heat exchanger and then run some new duct? Also you should mention to check the burners and orafices and the roll off sensors. Lastly, if limit sensor was the concern, I would have done a flame test in the tubes to check the heat exchanger and if I saw yellow flame, might have checked gas pressure with a monometer. Good work though and thanks for posting these types of videos. It really helps us all out..
Yes, you can replace the primary heat exchanger in a furnace without replacing the entire unit, but it's usually only recommended if the furnace is relatively new and in good condition overall, as the process often requires significant disassembly and can be costly due to labor involved; if the furnace is older, replacing the whole unit might be more cost-effective. Seems the flame test you recommend might have been something to check after the first issue was fixed. And, by finding the cracks and replacing that component, the flame would have been OK most likely. If not, then a gas valve check might have been in order. I'm no HVAC guy (just a homeowner), but it seems Tad was on point and perhaps you're nitpicking a bit.
Hey, if the return was too small then that could definitely have contributed to the short cycling of the heater and a cracked heat exchanger over time. Evap coil could have been dirty too. Good pointers. It's always my last measurement static pressure and too often I wish I would have went straight to it. That man needs a new unit. Good find.
Nice video. My 90+ fgas furnace is getting old. It tripped the manual roll out a few times. I'm not taking my heat exchangers out. I did put 5 CO detectors thru ouut the house and basement however. I'm getting a new furnace w/in the the next year.
Thank for the video. I had my furnace replaced 3 years ago and it was oversized. It countinued to over heat and shut off and turn back on right away. Ive had the technician out 7x now though out the install to try to fix. I was told by a different hvac tech that the has was tuned down to temporarily fix the over heating. Well now its in the negative cold snap here in Chicago and my heat cant keep up with the -10s and 20+degree windshield. Runs all night for few days stright sometimes dosent shut off. We went to bed and it was 74 degrees woke up and it was reading 68 degrees in the home. Had to buy a space heater to make it though last few days. Different techs who came out said the furnace installed was to large for my home. Also the return air duck was to small. They said the downstairs area could use a return because it dosen't have one. My question is, is this issue fixable and is the contract responsible for rectifying this problem with the correct size furnace. I have a warranty company that i use and they now said they aren't going to replace it, even though they admited to the contractor they used said the new units to big. My old furnace never had that problem before. Any recourse you can recommend be greatly appreciated.
Hi ... I am in Everett WA and the video is amazing ... however all i learnt is that i wont be able to fix my furnice but call a technician ...ahahaha... thanks for the video ...
Best HVAC video I’ve seen, you couldn’t have explained it any better. Thank you.
Wow, thanks!
@@TaddyDigest dude, you are better than any instructor I've had. Keep the videos rolling, you're gonna make me rich.
Really means a lot thank you so much
@@Caesar-nq5if For real! Most people would have never noticed the return size being the culprit but makes perfect sense. This dude is the HVAC GOAT!
I’ve learned so much in this channel
Thanks Tad, you're very thorough and that is why you found the cracked heat exchanger, too bad for the customer but good for their health and safety, they were lucky to have you as a service tech.
This was one of those that start out small but cost the customer dearly in the end. You did save the customers and families life. Finding that heat exchanger full of cracks , praise the Lord. Hallelujah.😊😊
I'm about to get out of medical and back into HVAC. I'm addicted to this channel
Really appreciate you watching brother
@@TaddyDigest seriously, you are the Compressor Professor. I can't wait to start my LLC and I have you to thank
That's awesome the compressor professor 😄 🤣
Thank you so much for this. I live in Iowa and we recently had 100 degree weather and my ac went out. Now the heat has passed ive found this and after replacing multiple parts (one was actually broken) this helped me truly troubleshoot and confirm. People like you posting these educational videos are real heros to people like me struggling to get by and unable to afford to hire someone.
I really appreciate you. Thank you so much for watching the videos. I'm so glad you let me know how i've helped and that to me means everything you're the.Reason I keep doing these videos
good Job guys, I am an HVAC tech with few years of experience and i just came accross your video out of bordom amd wanted to appreciate what you are doing, keep it up
Great to hear!
Very informative and well done video. All the right talking points. I learned a lot. Having come from an Industrial HVAC background, I feel that I have a lot to learn in the residential/commercial sector where I now own a business. This was very helpful. Walla Walla Washington.
Man, I like and enjoy very much your teaching scenarios, and troubleshooting a lot. I do HVAC but not like you residential/commercial. I only do apartments complex and pretty much is the same each day, since is the same property. Every once an awhile I do City Residential. But definitely I'm learning and keep learning by watching your videos. You're the best!
I'm glad you enjoy the video. You're the reason I do them my friend. Thank you so much for watching.
That secondary heat exchanger was clean af bro.
Your video was amazing from start to scratch, well explained, i bet you a camera scope would not find that crack, hard to find cracks with a camera, but you did everything the right way, good job!
I did learn quite a lot from this video. I'm not a pro, but I can usually fix things with the right research, and you just provided some no-nonsense information that's gonna save me a ton of cash. Thank you.
Customer here. Nice video, i love learning how things work.
Thanks, you helped me to solve a problem when 4 other technicians before me can't find.
You explained that very well and a lot of helpful information for young technicians learning the trade. My name is Eric and im watching your videos from Baltimore Maryland.
Awesome video. I’m gonna rewatch and take notes. I’m an hvac student in Florida and I am confused about direction but you helped me with information thank you.
I have a furnace with 140 limit switch open, now I can believe it is a cracked heat exchanger. I was speaking with co worker over phone and found it. Thanks for the info.
Great job explaining all the details, Tad!!
You are a Natural Teacher; I’m impressed.
And now I’m off to see if I can figure why my furnace turns on for 30 seconds and shuts down.
Thank You, Kindly, Tad.🙏🏼
Hello, thank you so much for taking a time to make these videos. I learned so much from your videos. God bless you!!!
Toronto, Canada
Glad you like them!
I learned a lot from this video. The biggest thing is the way to check in the limit switch is open with the thermistor, thought that it was only used to find super heats
Best HVAC video I’ve seen, you couldn’t have explained it any better. Thank you.
Sir, that was just about the most helpful vids I have seen in a loooong time. Thank you. Saved me a world of headache. BTW I love those Maxi Flex gloves - all I've been using.
dam thats a big ass crack. i always put a box for 3.5 ton ac or anything at a 100kbtu and over. you offered to fix first before replacment. i beleive in building value with the client. when they see you actually care they will throw whatever you offer them. good work. im from illinois lol
Very informative, didn't realize that there was so much involved. Looks like keeping the coils clean is important. Thanks.👍
I had a bad limit the other day. It was on a package unit though so it got corroded. Great video once again!
No better in the business than ol Tadd. He's a master!
Hello sir. Just want to say I'm new to your channel and the content you present is excellent!!!!! Great Job!!
Failed heat exchanger and a fist bump hahah, can't imagine why 😂 Good work guys.
it was very important for my education, thanks for your time from Chicago IL.
A better filter will keep those heat exchangers clean!! 😊 I’ve been doing HVAC for 17 years, I’m located in Eastern middle Tennessee. You make really great videos! Keep it up!!
Good to know!
My furnace stays running nonstop but blows no heat. You can feel the warmth by the vent but no warm air blows. I had two servicemen come but they only offer me to buy a new furnace from them. So far no repair yet. I hope its okay for the next 2 months. Damn they say board is bad $600+, fan motor bad $1000+ and need a new thermostat cuz mine has mercury., and a new furnace will run $4200+++ not including yearly service cleaning. I like to just get it repair but not having to buy a whole new furnace when not necessary... Is there any honest repairman out there???
What MERV rating for a filter do you consider optimal for air cleaning but not too restrictive of air flow? Thanks!
Your attention to detail caught my attention while researching some troubleshooting. Keep providing, they're great!
My boss and the customers think I should be able to do all this in like 20 minutes, by myself in a cramped attic space. lol You pretty knowledgeable tech Taddy. love your vids.
Your boss needs to get up there and do it himself
NTE bruh
The same thing happens with me 😏
There's definitely a better way to solve this issue and come to the same determination Tad did you definitely don't have to remove the entire heat exchanger to tell that the heat exchanger is cracked There's so many ways to tell this without doing this process
There's definitely different ways.What if the flame is blowing out?That's a definite indication
#1 hvac guy on TH-cam. Enjoy these videos dude.
great work and thank you, i am visiting you from Atlanta Ga. keep helping me be a more proficient technician
Thank you.
AC coil was plugged.
Switch was doing its job.
Glad it helped
It is helpful to see someone else take time to find out the root problem and not just try and quick fix the symptoms.
The part was telling of another fault.
Excellent
The modern "health care" system works the symptoms and not root problems as well, and we know how healthy Americans are.
Great video!!, from duplicating the problem and showing how to diagnose it and then the cause,Thank you for putting this video together. I definitely learned something new. I will now remove my blower and inspect the second burner. You are appreciated Sir.
DUDE YOUR THE MAN, Jan 1, 7 am, 58° in the house. What a way to start a new year. I have several furry animals so I change my filter the 1st of every month. Just so happens I used the last one in the case. It must have been in Nov so I missed Decembers filter. Shut main power, would kick on four 4/5 min, then Shut off. Had no idea lack of air flow would kick it off by being to hot. By the way everything was clean in the furnace with all new A/C 6 months ago, new inducer 1 month ago. Thank you so much for making this video. Have a Prosperous and Happy New Year.
My exact scenario ! House temp dropped to 56 degrees Hot at the heat tubes flames great but look warm heat from all the registers , new filter will pull the blower out and look at the secondary heat exchanger but thinking the worse ,...........
Such a good diagnostics test/learning video. IM SUPER EXCITED
Wow, fascinating. I've actually ran onto quite a few bad limits switches though for some reason.
I've been doing this for about about 20 years or more and I always add to returns to the big 90s like that. That dirty coil also could have contributed to that bad exchanger. But I would have never probably caught that without breaking it down myself because it had a rich nice blue and white Flame. In my experience over the years usually when that boy cracks I get some orange in the flame. Thanks for the tips I'll add this in my notes of troubleshooting. Love your content you do an awesome job peace and blessings😂
Thank you brother I'm glad you like to content. Thank you so much for watching.
Nice troubleshooting & nice find on the heat exchanger ... Good info Tad ... Thx
Thanks 👍
Considering the space above the units most of the time, i never understand why not lift the unit up and take return from the bottom as well. Good catch on that HX
Great job bro Pedro from Tampa FL leading every time with U.
Well done. It makes me dig a little deeper in my troubleshooting
Good to hear Glad you liked the video
Really great informative video. I'm having an issue with my garage furnace my cousin sent me this link. I'm a plumber in illinois. The garage heaters a lot different it's one of those ceiling hung units. I changed the limit switch thinking that was the issue. It's not. I'm going to run some tests and check out the coil but this thing just keeps on shutting off on me. I was also going to try and change the thermostat. This thing was working fine and then it just started shutting off after 5 minutes of operation.
Your videos are liquid gold!!!!! Ty bud
Glad you like them!
DUDE. Thank you for this extremely useful video. Super appreciate you, was able to get my old ass furnace back up and going until a real repair guy came by finding a switch with rusting connectors using your multitool explanation, and deoxidizing the connections! HOORAY
Great video, especially the cold air return tip.
I LIKE YOUR VIDEO, I 'M LEARNING A LOT FROM YOU THANKS, HI FROM CHICAGO IL.
thank you 😊
This was an awesome video!! I learned more here than I have in 6 months of school. Thank you Tad!!
I really appreciate you saying that you are awesome. Thank you so much for watching.
Please share the video if you have time and hit the like button.
Yes! Taddy So much info. here! This Really Helps us who are out in the field troubleshoot, and be observant to the symptoms we see and the study we've done on heating and A/C. Very Good Video! Thanks! @@TaddyDigest
That was impressive diagnosis... Well done. Still scary though, fearing mine will dump out on me..
That so good a really learn something. Thank you for sharing your experience
Great service brother,good job 💯
Thanks for posting this video I’m new to field and need these to learn I’m going to be paying for more details again thanks
Glad it was helpful!
Thank you TAc I didn’t know you couldn’t add another return at the furnace if there is a water heater near by.
You're welcome my brother
Been researching this issue with my payne furnace.
Thank you for this instruction.
@@Full_Spectrum_Dominance did you ever fix the issue?
Did you fix the issue?
Chandler, Arizona its like I'm there working with you, great stuff. Keep it coming brother. Thanks 😃
The best HVAC guy
Tad is my hero. I've said it before and I'll say it now and Mañana too. 😊 good work Tad
That's a costumers are looking an a Technician a true if not the good one but find the heat exchanger a crack that saves the family life but at the end it costly damage to the pocket but money is money life is important. I'm retired but still looking to learn something good. From Toronto Canada good job Taddy. Keep up the good work to help costumers.
Thank you very much for watching.
I am glad YOU are here
Awesome Tad, you always keep it 200%real !
I'm glad you enjoyed the video!
¡Gracias!
Thank you so much you made my mouth drop open. That's awesome
Here from southern Utah. Enjoy your show.
That is excellent so glad you're here brother
Maaaaan you really go into Depth your Amazing God Bless Always
I appreciate that!
I learned that the 5 ton needs 2 return. I also like the servicing advice from cleaning the heat exchangers on maintenance. Thanks
Tad, you guys in Tennessee really know your ac/heating trade. im glad i follow you bc even tho ive been doing this for 22 years in Fl so no gas furnaces much, i learn something new from you each and every time, cause and effect! Thanks for sharing.
Glad to hear that my brother please keep watching
Excellent, I learned a lot on this one. Thank you!
I learned not fist bump when I find a broken heat exchanger. But also thank you, great video.
I only service "old school" large industrial boilers. I just had a friend recommended your videos because he knows I love to learn. I wouldn't be working on condensing units, but I loved your video. Like you mentioned, I always want to know what caused a failure to happen so it doesn't repeat it self. Keep up the good work!
Nice job brother I learned a lot from this video
So glad to hear my friend. Thank you so much for watching
Bro thank you, for spreading your knowledge u rock. I wanna become a super tech just like u.
You can do it!
I do what you do but I just pull one screw out of limit then stick my “k” type thermometer through that. Or pull limit, foil tape, then poke thermometer through. 😅 100 ways to skin a cat🤷🏼♂️ I’m in year 3 an always refer to your videos, thanks for helping us all out🤘🥃
I hope you start posting TikTok from Mitchell SD because I used to fish 🐠 around there as a lived in SF
This was super helpful!! Thanks for making!
Nice video amigo, I learned a lot about you videos,,,, gracias] thanks I from Chicago I just started HVAC-R business,,
Love watching your videos Taddy.
Glad to hear it
The thermistor was getting hotter then the rating on the limit because it was possibly sticking in to far. That furnace as most Carrier brands use a baffle to direct the air flow directly at the high limit to cool it off. I’d recommend using a piece of tape to hold the thermistor directly on the limit so it sees what the limit does. Nice find on the plugged secondary. Carrier also put out a bulletin for some of there units showing the insulation deteriorating and puffing up inside the primary section of heat exchanger and directly under the high limit the insulation puffs up and blocks a portion of the air from the blower motor even though the baffle is blowing it directly at it, causing nuisance limit trips. Their solution is to remove the limit and cut half-inch strips of metal tape, approximately 4 inches long and put them through the whole of the limit to secure the insulation back to the jacket. No more limit trips. This bulletin is posted and available.Heil is a carrier brand. Great video thanks.
Hello, do you have some reference material to look at. I am having the same issue. The furnace blower was getting suffocated by the loose insulation above blower motor. The board showed code 33. I removed the loose insulation and still get code 33. I’m planning to replace the limit switch. The gas burners shuts off after couple of minutes. The furnace is about a 4 years old.
@@BigCivilSac I was only referring to what I saw in the video and expanding on what he had done or explained. Unfortunately I have not diagnosed your situation so I wouldn’t be able to offer and useful information. I’d suggest calling a professional in your area. Good luck.
Great video with good knowledge. Thanks for sharing
great vid. Appreciate the trouble shooting narration!
Thanks!
You're welcome!
I remember yrs back ac kept freezing up with clean evaporator it was the secondary heat exchanger
I’m Daniel from Chicago, good video hope you make more videos
Hey daniel you got it
1140 am thx for your expertise going to take a look at my heat exchanger cabinets for corrosion and leaks❤
Great job tad I had a high efficiency filter trip a high temp limit a while back always use cheap filters
That's a good idea!
Awesome teachings . I am from nc mebane . I learn a ton about the heat exchanger and the thermo limit switch. I know better now! Thank you!
Hmm. If the primary heat exchanger was cracked you should have seen more of a yellow flame within the burners, From what I saw from a quick pass by in the video, they looked a good color of blue. Why quote them on a new unit when you can just change the primary heat exchanger, clean the secondary heat exchanger and then run some new duct? Also you should mention to check the burners and orafices and the roll off sensors. Lastly, if limit sensor was the concern, I would have done a flame test in the tubes to check the heat exchanger and if I saw yellow flame, might have checked gas pressure with a monometer. Good work though and thanks for posting these types of videos. It really helps us all out..
Yes, you can replace the primary heat exchanger in a furnace without replacing the entire unit, but it's usually only recommended if the furnace is relatively new and in good condition overall, as the process often requires significant disassembly and can be costly due to labor involved; if the furnace is older, replacing the whole unit might be more cost-effective.
Seems the flame test you recommend might have been something to check after the first issue was fixed. And, by finding the cracks and replacing that component, the flame would have been OK most likely. If not, then a gas valve check might have been in order. I'm no HVAC guy (just a homeowner), but it seems Tad was on point and perhaps you're nitpicking a bit.
Hey, if the return was too small then that could definitely have contributed to the short cycling of the heater and a cracked heat exchanger over time. Evap coil could have been dirty too. Good pointers. It's always my last measurement static pressure and too often I wish I would have went straight to it. That man needs a new unit. Good find.
Yes, that is the attitude, there is always a cause
Nice video. My 90+ fgas furnace is getting old. It tripped the manual roll out a few times. I'm not taking my heat exchangers out. I did put 5 CO detectors thru ouut the house and basement however. I'm getting a new furnace w/in the the next year.
What a good troubleshooting man!
thank you very much
lol, at the fist bump on the cracked heatexchanger! make that money $$$ great video!
Thank you thank you thank you. I feel very informed now and can make a better decision.
Thank for the video. I had my furnace replaced 3 years ago and it was oversized. It countinued to over heat and shut off and turn back on right away. Ive had the technician out 7x now though out the install to try to fix. I was told by a different hvac tech that the has was tuned down to temporarily fix the over heating. Well now its in the negative cold snap here in Chicago and my heat cant keep up with the -10s and 20+degree windshield. Runs all night for few days stright sometimes dosent shut off. We went to bed and it was 74 degrees woke up and it was reading 68 degrees in the home. Had to buy a space heater to make it though last few days. Different techs who came out said the furnace installed was to large for my home. Also the return air duck was to small. They said the downstairs area could use a return because it dosen't have one. My question is, is this issue fixable and is the contract responsible for rectifying this problem with the correct size furnace. I have a warranty company that i use and they now said they aren't going to replace it, even though they admited to the contractor they used said the new units to big. My old furnace never had that problem before. Any recourse you can recommend be greatly appreciated.
Hi ... I am in Everett WA and the video is amazing ... however all i learnt is that i wont be able to fix my furnice but call a technician ...ahahaha... thanks for the video ...
thank you for doing this video i have learn a lot from your video please keep doing more video like this again thank you
Thank you, I will
i was interested in seeing how to clean the secondary heat exchanger, do you just brush it off or hose it down maybe?
Great video. You explained everything just fine. Thanks!
You’re the best. Thanks for the advice. 👍 my name is Bruno I live in Alexandria Virginia
Hey bruno i'm glad you're here brother
Stay healthy stay happy
Good catch my friend
Thanks Brother
Thanks for your work on this. It was very helpful
Excellent video teddy! What is the best way to clean that trap for 90% gas furnaces?