I want to personally thank you for the video. It saved me at least $500 according to one of my HVAC friends. It took me 5 minutes to remove the capacitor and 3 minutes to install the new one. Everything working beautifully.
Thanks! This vid helped me ensure that the sound I was hearing was what I thought it was. The capacitor cost $3.70. I had a friend pick it up on the way over. They were happy to help, and refused to accept my payment for the part, as I didn't charge them for lunch. Likely saved me $300-500 for a service call to get it fixed, and was solved before I had my morning coffee, rather than waiting a couple days in the heat for the repair.
This is exactly what my carrier furnace was doing. It started squeaking the day before it started humming. Ordered the capacitor on Amazon and in 2 days and $10 later my issue was fixed. Thanks so much!
Dude!!!! THANK YOU!!! My capacitor finally failed today, did a search on YT, found your vid, picked up the part at a local ACE Hardware and had everything back up in running in no time. Took an extra hour to clean the fan/blades/intake/etc... Super quiet on start up and works great! Thanks again! 😎
Nice, my local ACE didn't have a selection of Capacitors but I did see some location about 2 hours away did. Pretty handy having ACE stock common capacitor sizes 👍
I have been trying to find a video breaking down this failure mode, I have a wall shaker AC with these exact symptoms. I was relieved to see your video in my search results, I have learned tons from your other videos so I knew this would likely be what I’m looking for. Did not disappoint, I’m no longer sweating my upcoming repair.
Thank You for your video. It was my problem, and my furnace and ac are working again. Do yourself a favor and keep an extra one on hand by the furnace for next time you need one. You will be glad you did !
I also have one of each (dual run and run capacitors) on my shelf ready to Install when needed. I like B.M.I. Capacitors because they are made in the Great USA, I’ve had bad luck with that Chinese junk, hope this helps. Thanks for making this video and PLEASE don’t forget to DISCHARGE the capacitor your removing !!!!!!!!!!!
Excellent video. Mine is currently making that noise on heat and air. Unfortunately, I'm not physically able to go into the attic and do it. At least I know what my HVAC guy should be talking to me about. Thank you.
Really glad I found your video. Woke up this morning to a cold house, after some quick research/troubleshooting and a $10 part I now have the heat back up and running, thank you for helpin us all try and save some money. I appreciate it!
Thank you for this video! This totally helped me fix my issue. First the capacitor and then I had to replace the blower motor. Not too hard, just had to wait for the parts
I thought my motor was out again; just installed a new one in 2021. The manufacture date was August 2020 on the capacitor that I purchased with the motor. This video did help me determine that the problem was the capacitor rather than the motor. Thank you!
Spot on assistance with this video - Mine made exactly that sound, and $16 later plus a trip across town to get the part had my furnace working again on a cold day. Well done and thanks!
Thanks for this video. The walkthrough was very helpful especially the buzzing at the beginning indicating the same issue. Found the part at Ace for under $9. AC back on. Thank you.
Omg, I've been searching for a helpful video and this is it. My furnace is making this sound and I had no clue and other videos weren't helpful. Now this might be the reason why my furnace is making that sound, tysm!
Good info. My system is making the same noise and nothing is blowing through it so I figured it was the blower motor. I'll for sure try your fix first!
Mine did that same humming sound and kept making that noise even when unit is off. Capacitor was bad like u said. Hoping that's it. I ordered the part thru Amazon. I have been out of the game being a Heating and air tech. This was a refresher. Thank u.
Not replacing batteries in thermostat cost me $500. Air handler stopped blowing completely but was humming and froze the inside and outside unit. It's under warranty and ac tech replaced blower motor. $310 for labor $97 for service fee and $90 for refrigerant. 2 days later it wasn't working. On a hunch I replaced thermostat batteries. Instantly the system was working fine. No problems since. I hope this helps somebody out there.
Thanks, great tutorial !" It's worthy and is good as a song by ABBA." 🙂 Today is Easter Sunday and I have been blessed with an easy to do job, thanks to you..! I have a Granger's nearby and also Home Depot claims to have them also..👍
I have had this sound going on for over a week, I legit thought it was my fridge making the noise. It wasn't until I went into my basement today that I realized it was my furnace. Looks like I may be out heat in a Canadian winter, not looking forward to that! Serves me right for not checking the basement, but It's a dirt floor basement and I never go down there except maybe once a month. I hope I didn't damage too much!
Great video. Just had this on a 12.5v capicitor measuring at 10. Fan would come on but unit would not really start. Hopefully the part I ordered should fix it.
I had a bunch of power failures the past few days due to high wind storms and I guess my furnace went out when I was asleep and I woke up to my house freezing. I’ve trouble shooter it and it doing the same humming. The motor is new and I’m assuming the power going off and on so much may of messed the part your explaining in this video up. Thanks for the video and hopefully I can find one to see if that fixes my issue.
Thank you, I was going to school for HVAC (epilepsy stopped that 😞) but I still have all my books and stuff- I had the same problem with my Rheem system, and I have replaced the capacitor (the first thing that came to mind, plus it was a cheap replacement...) and then I couldn't get the whole system to start. I started to dig through what could have been going wrong, the hum was going still going on- the circuit board... I don't have to replace the whole thing, or just which part (haven't found it yet... I still have to check it with my meter) Sorry this is so long ago of a question, but I'm completely lost on this.
Thanks for the info. Would it be possible to list the most common failure points of the HVAC system, winters coming and would like to stock some replacement parts if needed, thanks again for sharing.
I am experiencing an issue with my air conditioning unit. Despite the cold air being emitted from the vent, there is a persistent humming noise. I would appreciate your assistance in identifying the potential cause of this noise.😊
Shut my ac off last night because it was cool out. Today all it's doing is buzzing in furnace. If I turn fan from auto to on it works. Outside unit is running. I guess cap? Also filter was dirty and I replaced it
Might be starting to go, do you have a multimeter where you can do a quick check on the micro farads? Should be +/- 5% of the rating you see on the cap.
Thank you! It worked. Saved a bunch of money because its the weekend. Been in the 90s and we’ve suffered for two days but worth the wait. Thanks again sir!
YO! YOU SAVED MY HOUSE AND FAMILY FROM SPENDING BOOKOO BUCKS THAT WE DON'T HAVE BY A $6 CAPACITATOR I BOUGHT LOCALLY ! THANK YOU! Btw people! Their is a black circle thing when you look on the inside of the furnace needs to spin too, mine wasn't. I span it back and forth, turned back on the furnace then boom turned on, started spinning again maybe it was stuck from sitting or something 😮💨
I head a dept that makes industrial heaters. The blower wheel is a very thin and lightweight. If you ever have to remove it be careful and do not drop it. It will warp the crap out of it. I would also recommend wearing gloves. Those things will cut you like a razor
SHould be obvious but layout may vary, mine is actually upside down compared to here. The output is on top of my furnace and the input is in the middle/bottom on the left side.
My AC is making the same noise from the blower motor area… but not on heat… the AC works but has the whining noise …. Do you think it’s the same problem
thank you for the video. I am planning to replace the capacity as you show in this video. Hope it will solve the problem of my AC ( The blower is delay for couple minutes after the condenser started). As I recall, I did not replace the capacitor of the blower for the last 15-18 years. so I decide replace it any way. I am appreciate anyone think it is a solution to fix the blower delay. thanks
I swapped out the cap on my outside unit for 30 bucks today locally, but that didn't do anything. I had replaced it a few years ago and that was the problem, but it isn't my problem now. I will check the blower cap in basement tomorrow. the vent fan isn't coming on at all. my aunt said it was making a noise, but since I didn't actually hear the sound, I'm stuck trying to figure it out. I'm mechanically inclined. I can replace anything if I know what that thing is lol
What about the bottom half of the furnace? What's that for? I'm making sure I'm just knowing what I'm doing before messing with something I don't completely know. Thx if you can answer, kudos! God bless you and your family 👪 🙏 ❤️
That's the draft inducing motor for removing any extra gases from the system to the exterior of the house so you get a clean consistent start of the gas burners for safety reasons. There are several failure points in that system as well but it's only for the heating side of things and not the cooling part.
this started happening over a few days. the fan was noticeably loud when kicking on and took like 30 seconds to spin up and was still noisy. then finally it completely stopped. after a couple days of testing. looks easy enough to replace either the capacitor or the motor. Mine has two capacitors, one obviously to the motor and i can't remember the other one. i'm guessing replace both since they're cheap. It's a rheem 90 classic i think
What if you hear that same buzzing noise with no fan movement on the outside unit but not the furnace? I think we may be dealing with multiple issues at one time.
Question. My furnace is comeing on the ignitor is lighting and a flame is there but not getting any heat outta the registers im getting air but no heat there is a flame but its almost like its not fully cycleing and its not turning off at all only if you turn it down below set temp.
That is the same noise that i started hearing off and on a few hours ago, but i have my A/C unit shut down for the season. I shut it off 2 weeks ago & have not used the heater yet. Why is it making a sound when it is completely shut down?
When my a/c switches on I hear a VERY LOUD click/clunk before it starts up. When the a/c is off I can still hear a low buzzing sound. Do you think switching out the capacitor will fix both issues?
Mine does the same thing you showed. My blower motor is makes the exact same sound my cage in can spin it freely with no problems my question is if the cap doesn't work what else could be the problems.
I have a furnace that the blower motor works when I turn it on as a fan but once I turned it off and I switch it to heater the furnace turns on it ignites bed three minutes later after it’s ignited and running the blower motor does not even turn on, and the whole furnace turns off. What would your thoughts be?
My furnace (1942 house) is in a dirt crawl space under the floor so have to remove a trap door and get down and in. There is very little room so only service people have gone down there. Not even enough space for filters so I have them on the intakes. It really is such a bad place for it. I have this buzzing and I’m not even sure this can be reached. The last visit by the service guy recommended mini splits if this whole thing ends up dying. UGH!
Thanks for the video. The sound was identical to mine. I confirmed defective capacitor on my furnace by spinning the squirrel cage by hand with "fan on" selected on the thermostat. It started up just fine by that method. I then turned on the heat, and just kept the fan on all day until I got the new capacitor. The motor ran all day without having to start up again. It would have gotten really cold in the house with outside temps of 20 degrees.
Hi I am changing my capacitor but I didn't pay attention on weather the sticker was facing the fan or the outside. Does it matter in wich connection do we install it on
Great video! When the thermostat is calling for heat, my furnace blower is repeatedly starting to spin but won't continue (cycling multiple times per minute), so no air is pushed through. I hear the fan/furnace vibrate (kinda like "whhhhhirrrrrrrrr... whhhhirrrr..... whhhhhiiiiiiiiiiiiiiiiiiiiiiiiirrrrrrrrr..." (irregular length of repeated short whirs from the vibration/spinning). Would that also be due to the capacitor? Please any help or advice would be appreciated!
I got old furnace and the bower not working correctly and it does a small noise just like yours but it's a very very small quiet humming noise and the wheel still doesn't turn
I replaced the capacitor today. Unfortunately the problem was both the capacitor and the blower motor. Yesterday it wouldn’t even make that humming sound but today after I replaced the capacitor it makes that hum sound but the motor won’t run. I’m having a problem getting that flue section out that’s blocking the blower motor. It looks just like yours in your video except my control panel isn’t attached to the sheet metal of the flue section. I can’t pull out the front sheet of flue after taking out two screws at the top. It has a couple tabs going thru the sheet it’s sitting on and I can’t pop it out.
@@kristagerst2341 I have the same problem. Tech came out and changed the capacitor and charged me $350. I was livid because I could have do it myself for 1/10 that amount. Up and running and the A/C goes out again. Now they tell me the blower motor needs to be replaced and they way $650. I told them, after changing me to fix the wrong problem, to go to hell. I bought a new motor and will try and replace it myself. Just wish it wasn’t 120 degrees in my attic.
My blower motor started failing on me. Only way I could get it to work at times is when I kill the power and power it back on. Once it reaches the set temperature and goes on after the temperature drops, the blower don't kick back on the 2nd time around. You think the capacitor will be the problem?
I checked, and I didn't find a capacitor for the furnace. The brand is Lennox, manufactured in 2018. I only saw two small boxes, and I believe one of them might be a transformer, but I'm not entirely sure. Could it be possible that I don't have a capacitor for the furnace?
2019 is when everything switch over to the very expensive but efficient variable speed motors. You might have one of those if it was installed in 2019 or later. That's a totally different kind of system and this video is not for you.
Question. I’ve got a heat furnace with the exact same symptoms. I tested my run capacitor and it was bad and I replaced it. The unit ran good for a day and then started again with slow start up or no start up. When the motor freezes on startup you can reach in and give the squirrel cage a spin and it will begin to work. The cage spins freely so I’m wondering if the motor can be going bad with the cage spinning freely? I assume the answer would be yes since a fan that would not turn easily would be more indicative of a bearing issue and not necessarily a bad motor. I would really like your opinion.
Old reply, but for the sake of others that have a PSC type motor, the motor could very well be bad. Mine had a shorted startup winding. If the bearings are bad, the motor heats up and causes damage to the motor and has the exact symptom you describe. You can easily test the motor windings by measuring across the two wires that connect to the capacitor (first remove the wires from the cap) and it should read 60 ohms if it is good. 20 ohms for the run winding and 40 ohms for the start winding. The start winding could be open or shorted. In my case, it was shorted because it read only 20 ohms. Replaced the motor and all was well again.
So my fan spins nice and easy by hand so I'm guessing my blower motor is still ok, and I've changed the capacitor but its still making the Same humming noise and wont kick on. What could be wrong?
Omg I replaced my 6 year old GE motor and capacitor that was making this same noise . 6 years later I think the China motor stopped working no noise test the capacitor and it's below threshold ....I think that was my problem from the start
I want to personally thank you for the video. It saved me at least $500 according to one of my HVAC friends. It took me 5 minutes to remove the capacitor and 3 minutes to install the new one. Everything working beautifully.
Thanks! This vid helped me ensure that the sound I was hearing was what I thought it was. The capacitor cost $3.70. I had a friend pick it up on the way over. They were happy to help, and refused to accept my payment for the part, as I didn't charge them for lunch. Likely saved me $300-500 for a service call to get it fixed, and was solved before I had my morning coffee, rather than waiting a couple days in the heat for the repair.
This is exactly what my carrier furnace was doing. It started squeaking the day before it started humming. Ordered the capacitor on Amazon and in 2 days and $10 later my issue was fixed. Thanks so much!
Dude!!!! THANK YOU!!! My capacitor finally failed today, did a search on YT, found your vid, picked up the part at a local ACE Hardware and had everything back up in running in no time. Took an extra hour to clean the fan/blades/intake/etc... Super quiet on start up and works great! Thanks again! 😎
Nice, my local ACE didn't have a selection of Capacitors but I did see some location about 2 hours away did. Pretty handy having ACE stock common capacitor sizes 👍
Thank you for including the sound it makes! Most don't do that. That's the exact sound mine is making.
Yes!!!!!!
q
Awesome
Explanation was right on point
Thanks
Lol I no most people be like if it's a clanking noise do this and if it's a clunking noise do this haha
Perfect video. The sound was helpful. Found the component locally. Fixed! Thank you
I have been trying to find a video breaking down this failure mode, I have a wall shaker AC with these exact symptoms. I was relieved to see your video in my search results, I have learned tons from your other videos so I knew this would likely be what I’m looking for. Did not disappoint, I’m no longer sweating my upcoming repair.
Thank You for your video. It was my problem, and my furnace and ac are working again. Do yourself a favor and keep an extra one on hand by the furnace for next time you need one. You will be glad you did !
I also have one of each (dual run and run capacitors) on my shelf ready to Install when needed. I like B.M.I. Capacitors because they are made in the Great USA, I’ve had bad luck with that Chinese junk, hope this helps. Thanks for making this video and PLEASE don’t forget to DISCHARGE the capacitor your removing !!!!!!!!!!!
Very clear and high professional way to tell people how to fix this kind of problem. Thanks a lot!
Excellent video. Mine is currently making that noise on heat and air. Unfortunately, I'm not physically able to go into the attic and do it. At least I know what my HVAC guy should be talking to me about. Thank you.
Really glad I found your video. Woke up this morning to a cold house, after some quick research/troubleshooting and a $10 part I now have the heat back up and running, thank you for helpin us all try and save some money. I appreciate it!
Thank you for this video! This totally helped me fix my issue. First the capacitor and then I had to replace the blower motor. Not too hard, just had to wait for the parts
I thought my motor was out again; just installed a new one in 2021. The manufacture date was August 2020 on the capacitor that I purchased with the motor. This video did help me determine that the problem was the capacitor rather than the motor. Thank you!
Spot on assistance with this video - Mine made exactly that sound, and $16 later plus a trip across town to get the part had my furnace working again on a cold day. Well done and thanks!
Thanks for this video. The walkthrough was very helpful especially the buzzing at the beginning indicating the same issue. Found the part at Ace for under $9. AC back on. Thank you.
Omg, I've been searching for a helpful video and this is it. My furnace is making this sound and I had no clue and other videos weren't helpful. Now this might be the reason why my furnace is making that sound, tysm!
You bet, best of luck troubleshooting. Be safe and keep warm.
You are the Man ! Seeing this video really enhances my knowledge of the furnace of how it works...thanks
Very clear, detailed, and helpful guide. Thank you!
Thanks for the video, my furnace was making the same sound. Glad I found it on time. A parts store had the part for only $8.00.
Good info. My system is making the same noise and nothing is blowing through it so I figured it was the blower motor. I'll for sure try your fix first!
My blower fan isnt blowing air into the room. You can feel the heat but no warm air blows. Furnace sound like my furnace.
Mine did that same humming sound and kept making that noise even when unit is off. Capacitor was bad like u said. Hoping that's it. I ordered the part thru Amazon. I have been out of the game being a Heating and air tech. This was a refresher. Thank u.
Not replacing batteries in thermostat cost me $500. Air handler stopped blowing completely but was humming and froze the inside and outside unit. It's under warranty and ac tech replaced blower motor. $310 for labor $97 for service fee and $90 for refrigerant. 2 days later it wasn't working. On a hunch I replaced thermostat batteries. Instantly the system was working fine. No problems since. I hope this helps somebody out there.
Thank you soooo much for this video!! Just fixed my AC and saved a lot of money
Awesome video. Very easy to understand and very helpful. Very good demo and instruction of steps. Thank you.
Great repair advice! My go-to suppliers are Grainger and McMaster-Carr; McMaster in particular has superfast shipping.
Thanks, great tutorial !" It's worthy and is good as a song by ABBA." 🙂 Today is Easter Sunday and I have been blessed with an easy to do job, thanks to you..! I have a Granger's nearby and also Home Depot claims to have them also..👍
You are so Right On ! Thank you guy, you are one of the rare one's. Have a great day, I will.
you are a boss thank you same issue here and the squ cage spins freely.
I have had this sound going on for over a week, I legit thought it was my fridge making the noise. It wasn't until I went into my basement today that I realized it was my furnace. Looks like I may be out heat in a Canadian winter, not looking forward to that! Serves me right for not checking the basement, but It's a dirt floor basement and I never go down there except maybe once a month. I hope I didn't damage too much!
Thank You! Your video literally saved me hundreds of dollars.
Great video. Just had this on a 12.5v capicitor measuring at 10. Fan would come on but unit would not really start. Hopefully the part I ordered should fix it.
Thanks Scott just save me a lot of money found part at Ace Hardware $9.99 👍🏾👍🏾👍🏾
Thank you! Super helpful. Thanks for adding the sound.
Keep up the good work, You are Jack of all trades!
What about if the buzzing is very low in volume and the buzzing happens even when the unit isn’t running?
I had a bunch of power failures the past few days due to high wind storms and I guess my furnace went out when I was asleep and I woke up to my house freezing. I’ve trouble shooter it and it doing the same humming. The motor is new and I’m assuming the power going off and on so much may of messed the part your explaining in this video up. Thanks for the video and hopefully I can find one to see if that fixes my issue.
Thank you, I was going to school for HVAC (epilepsy stopped that 😞) but I still have all my books and stuff- I had the same problem with my Rheem system, and I have replaced the capacitor (the first thing that came to mind, plus it was a cheap replacement...) and then I couldn't get the whole system to start. I started to dig through what could have been going wrong, the hum was going still going on- the circuit board... I don't have to replace the whole thing, or just which part (haven't found it yet... I still have to check it with my meter) Sorry this is so long ago of a question, but I'm completely lost on this.
Thank you, thank you, thank you! This saved me hundreds of dollars!
Definitely what mines sounds like right now!!
This is one of the best videos. Even if I cannot fix it myself, I now know what a service technician should be telling me.
You saved me 100s of dollars. Thanks a lot
Thanks for the info. Would it be possible to list the most common failure points of the HVAC system, winters coming and would like to stock some replacement parts if needed, thanks again for sharing.
Thanks bud. Coast appliance has these parts readily available.
Incredibly helpful video! Thank you!!!
You bet!
I am experiencing an issue with my air conditioning unit. Despite the cold air being emitted from the vent, there is a persistent humming noise. I would appreciate your assistance in identifying the potential cause of this noise.😊
Shut my ac off last night because it was cool out. Today all it's doing is buzzing in furnace. If I turn fan from auto to on it works. Outside unit is running. I guess cap? Also filter was dirty and I replaced it
Might be starting to go, do you have a multimeter where you can do a quick check on the micro farads? Should be +/- 5% of the rating you see on the cap.
I already change capacitor didn’t work, should I replace the motor ?
Beautiful explanation! Many thanks!
👍
For sure!
Just ordered the part on amazon. Hope it fixes the issue. Should because its the exact same issue as yours.
Thank you! It worked. Saved a bunch of money because its the weekend. Been in the 90s and we’ve suffered for two days but worth the wait. Thanks again sir!
YO! YOU SAVED MY HOUSE AND FAMILY FROM SPENDING BOOKOO BUCKS THAT WE DON'T HAVE BY A $6 CAPACITATOR I BOUGHT LOCALLY ! THANK YOU!
Btw people! Their is a black circle thing when you look on the inside of the furnace needs to spin too, mine wasn't. I span it back and forth, turned back on the furnace then boom turned on, started spinning again maybe it was stuck from sitting or something 😮💨
Well done Scott. Thank you!
I head a dept that makes industrial heaters. The blower wheel is a very thin and lightweight. If you ever have to remove it be careful and do not drop it. It will warp the crap out of it. I would also recommend wearing gloves. Those things will cut you like a razor
SHould be obvious but layout may vary, mine is actually upside down compared to here. The output is on top of my furnace and the input is in the middle/bottom on the left side.
Excellent video
My AC is making the same noise from the blower motor area… but not on heat… the AC works but has the whining noise …. Do you think it’s the same problem
thank you for the video. I am planning to replace the capacity as you show in this video. Hope it will solve the problem of my AC ( The blower is delay for couple minutes after the condenser started). As I recall, I did not replace the capacitor of the blower for the last 15-18 years. so I decide replace it any way. I am appreciate anyone think it is a solution to fix the blower delay. thanks
Great information!
Thx!
I swapped out the cap on my outside unit for 30 bucks today locally, but that didn't do anything. I had replaced it a few years ago and that was the problem, but it isn't my problem now. I will check the blower cap in basement tomorrow. the vent fan isn't coming on at all. my aunt said it was making a noise, but since I didn't actually hear the sound, I'm stuck trying to figure it out. I'm mechanically inclined. I can replace anything if I know what that thing is lol
Thank you for make it so easy God bless you
Have you came across your furnace/ac’s blower not turning on at all along with no humming noise? Have a 3 year old arcoaire with this problem.
when you plugged the wires back to the capacitor, you did not mention polarity. Does it have polarities?
So articulate! Hopefully mine is that same problem
Could your thermostat cause for the return fan not to come on. It sends signal to turn on outside compressor, but return never turns on.
Superb exact issue in rental subscribed !
should people cut off our gas valve as well or just the switch to replace capacitor
Right on, Thank you, well done👊
What about the bottom half of the furnace? What's that for? I'm making sure I'm just knowing what I'm doing before messing with something I don't completely know. Thx if you can answer, kudos! God bless you and your family 👪 🙏 ❤️
That's the draft inducing motor for removing any extra gases from the system to the exterior of the house so you get a clean consistent start of the gas burners for safety reasons. There are several failure points in that system as well but it's only for the heating side of things and not the cooling part.
this started happening over a few days. the fan was noticeably loud when kicking on and took like 30 seconds to spin up and was still noisy. then finally it completely stopped. after a couple days of testing. looks easy enough to replace either the capacitor or the motor. Mine has two capacitors, one obviously to the motor and i can't remember the other one. i'm guessing replace both since they're cheap. It's a rheem 90 classic i think
What if you hear that same buzzing noise with no fan movement on the outside unit but not the furnace? I think we may be dealing with multiple issues at one time.
Question. My furnace is comeing on the ignitor is lighting and a flame is there but not getting any heat outta the registers im getting air but no heat there is a flame but its almost like its not fully cycleing and its not turning off at all only if you turn it down below set temp.
Also, should I keep the furnace running while hearing this noise until I fix it or shut it off until fixed?
If your unit is new, I recommend to buy two of these capacitors. Get one spare. These fail every 3-3 years.
That is the same noise that i started hearing off and on a few hours ago, but i have my A/C unit shut down for the season. I shut it off 2 weeks ago & have not used the heater yet. Why is it making a sound when it is completely shut down?
When my a/c switches on I hear a VERY LOUD click/clunk before it starts up. When the a/c is off I can still hear a low buzzing sound. Do you think switching out the capacitor will fix both issues?
Mine does the same thing you showed. My blower motor is makes the exact same sound my cage in can spin it freely with no problems my question is if the cap doesn't work what else could be the problems.
That profit making off that part is criminal. Shame on anyone that is like that.
Hey my unit blows cold air but makes a humming noise at start up then goes away, what you recommen
Can you use a start capacitor instead of a run capacitor if yes, how would you connect them?
I have a furnace that the blower motor works when I turn it on as a fan but once I turned it off and I switch it to heater the furnace turns on it ignites bed three minutes later after it’s ignited and running the blower motor does not even turn on, and the whole furnace turns off. What would your thoughts be?
Hi my Lennox furnace / Heat Pump system, the blower motor turns on when the heat is on but doesn't turn on when the AC turns on. What could it be.
Thanks man! It was my problem.
My furnace (1942 house) is in a dirt crawl space under the floor so have to remove a trap door and get down and in. There is very little room so only service people have gone down there. Not even enough space for filters so I have them on the intakes. It really is such a bad place for it. I have this buzzing and I’m not even sure this can be reached. The last visit by the service guy recommended mini splits if this whole thing ends up dying. UGH!
ACE Hardware Stores Carry HVAC Capisators. Home Depot doesn't carry them.
Also HVAC Supply stores will have it.
Thank you, very useful!
Thank you, this fixed it for me 😁
Thanks for the video. The sound was identical to mine. I confirmed defective capacitor on my furnace by spinning the squirrel cage by hand with "fan on" selected on the thermostat. It started up just fine by that method. I then turned on the heat, and just kept the fan on all day until I got the new capacitor. The motor ran all day without having to start up again. It would have gotten really cold in the house with outside temps of 20 degrees.
Nice, solid work troubleshooting. 👊
Great video
Hi I am changing my capacitor but I didn't pay attention on weather the sticker was facing the fan or the outside. Does it matter in wich connection do we install it on
Great video! When the thermostat is calling for heat, my furnace blower is repeatedly starting to spin but won't continue (cycling multiple times per minute), so no air is pushed through. I hear the fan/furnace vibrate (kinda like "whhhhhirrrrrrrrr... whhhhirrrr..... whhhhhiiiiiiiiiiiiiiiiiiiiiiiiirrrrrrrrr..." (irregular length of repeated short whirs from the vibration/spinning). Would that also be due to the capacitor? Please any help or advice would be appreciated!
I got old furnace and the bower not working correctly and it does a small noise just like yours but it's a very very small quiet humming noise and the wheel still doesn't turn
Do you have a video on replacing the blower motor? Mine won’t turn so I’m guessing that’s the problem. Thank you for any help.
I replaced the capacitor today. Unfortunately the problem was both the capacitor and the blower motor. Yesterday it wouldn’t even make that humming sound but today after I replaced the capacitor it makes that hum sound but the motor won’t run. I’m having a problem getting that flue section out that’s blocking the blower motor. It looks just like yours in your video except my control panel isn’t attached to the sheet metal of the flue section. I can’t pull out the front sheet of flue after taking out two screws at the top. It has a couple tabs going thru the sheet it’s sitting on and I can’t pop it out.
@@kristagerst2341
I have the same problem. Tech came out and changed the capacitor and charged me $350. I was livid because I could have do it myself for 1/10 that amount. Up and running and the A/C goes out again. Now they tell me the blower motor needs to be replaced and they way $650. I told them, after changing me to fix the wrong problem, to go to hell. I bought a new motor and will try and replace it myself. Just wish it wasn’t 120 degrees in my attic.
My blower motor started failing on me.
Only way I could get it to work at times is when I kill the power and power it back on. Once it reaches the set temperature and goes on after the temperature drops, the blower don't kick back on the 2nd time around.
You think the capacitor will be the problem?
I checked, and I didn't find a capacitor for the furnace. The brand is Lennox, manufactured in 2018. I only saw two small boxes, and I believe one of them might be a transformer, but I'm not entirely sure. Could it be possible that I don't have a capacitor for the furnace?
2019 is when everything switch over to the very expensive but efficient variable speed motors. You might have one of those if it was installed in 2019 or later. That's a totally different kind of system and this video is not for you.
I bypassed the circuit board and the blower fan is going but when I turn ac on it turns off why?
What happens when fan comes on for a minute and shuts off ant won’t start again but burner is calling for heat
Do all furnaces take the same type of capacitor? I'm in a condo and my furnace is working but humming loudly before finally kicking on.
Question. I’ve got a heat furnace with the exact same symptoms. I tested my run capacitor and it was bad and I replaced it. The unit ran good for a day and then started again with slow start up or no start up. When the motor freezes on startup you can reach in and give the squirrel cage a spin and it will begin to work. The cage spins freely so I’m wondering if the motor can be going bad with the cage spinning freely? I assume the answer would be yes since a fan that would not turn easily would be more indicative of a bearing issue and not necessarily a bad motor. I would really like your opinion.
Old reply, but for the sake of others that have a PSC type motor, the motor could very well be bad. Mine had a shorted startup winding. If the bearings are bad, the motor heats up and causes damage to the motor and has the exact symptom you describe. You can easily test the motor windings by measuring across the two wires that connect to the capacitor (first remove the wires from the cap) and it should read 60 ohms if it is good. 20 ohms for the run winding and 40 ohms for the start winding. The start winding could be open or shorted. In my case, it was shorted because it read only 20 ohms. Replaced the motor and all was well again.
@michaelkrailo5725 As it turned out, the motor was going bad. I replaced it and she's running fine now.
Thanks for the info
So my fan spins nice and easy by hand so I'm guessing my blower motor is still ok, and I've changed the capacitor but its still making the Same humming noise and wont kick on. What could be wrong?
Omg I replaced my 6 year old GE motor and capacitor that was making this same noise . 6 years later I think the China motor stopped working no noise test the capacitor and it's below threshold ....I think that was my problem from the start