I just wanted to give an atta-boy to the video poster. Your video helped me solve my non-working furnace when it was getting pretty cold. What was special about this video is that you clearly explained what setting the multimeter needed to be on and zoomed in to show the symbol on the multimeter. This was very important as many of us are not electricians or have training in multimeter settings. Most other videos only referred to checking the MFD values with your multimeter, assuming you have that kind of high end meter??? Yours clearly showed the setting and how to test the capacitor and the need to wait and let the capacitor charge up, as well as, what readings you should expect based on the printed label. In my case, when I tested the capacitor with the multimeter, it showed OL which I believe means open line. This conformed the capacitor was bad and was not reading the appropriate values. This was an important test because my capacity looks brand shiny new, no rust, no corrosion, and no bulging. Ever the HVAC parts salesman questioned if it was bad when I showed him the capacitor. He was surprised as well. So thank you for your well thought out video and showing the necessary steps for a beginner like me to learn. My repair cost me $11 for a new capacitor and I had heat 5mins after I got back with the new capacitor. Your video saved me a couple hundred dollars for a service call!
@teeveemukaimukal9827 жыл бұрын
Thank you for taking the time and making the effort to post this video. This week I had the exact same symptoms of a bad furnace motor vice a bad capacitor. There are many videos about replacing the capacitor, but yours is about the only one that looks at the motor as the culprit. Last week, my 17-year old furnace motor began to sound and act just like yours. A direct substitution with a new capacitor did not solve the problem. I removed the motor and disassembled it. The front sleeve bearing had worn to the point where the rotor was rubbing against the stator (field winding) and the shaft was scored where it contacted the bearing - this generated the noise and even would cause the rotor to stop turning when starting up. Through observation and logic, your procedure is a great way to troubleshoot and decide to whether a capacitor is sufficient (the cheap fix) or a new motor (more expensive) will be needed. Thanks again!
@gmui6 жыл бұрын
Thank you SO much! This was the exact sound my furnace was making! I changed the capacitor and when that didn't work, replaced the blower motor and voila! All fixed! Including the buzzing sound in your video was key in making me think I could fix this myself and it saved me a lot of money!
@wave2215 жыл бұрын
Thanks for this video. You saved me so much money! It was the capacitor on mine that went dead. 10 dollar part from true value and A/C is back on.
@ssundberg58705 жыл бұрын
This is exactly what my furnace sounds like.😢 I guess I am going to try to figure out how to replace it myself (both the blower and capacitor). Thanks for the video!
@netsantamaria8243 жыл бұрын
Did you solve your problem? What was it? How did you fix it??
@coolbluelights6 жыл бұрын
a more accurate description of what the run cap does is it provides a phase shift on the incoming AC to help create a rotating magnetic field.
@leelemon33733 жыл бұрын
Great video. I never knew I could test the blower motor on the bench like you have yours. Sweet! Thanks
@justindoyle59724 жыл бұрын
Thank you for the video all the other videos I watch made it confusing this video was straight to the point made it easy for me to diagnose my problem which is a bad blower motor thanks again.
@brodheadjim5 жыл бұрын
Thank you for this helpful and easy to understand video.
@willgreen50232 жыл бұрын
Ok, motor is bad, but it would be nice to hear about what might have gone bad inside the motor? Bearings shot? or did electric coils develop a problem.
@papanimalang88743 жыл бұрын
Thank you. This was really really good.
@adt70954 жыл бұрын
Thank you for this video because it gave me so much information on my own furnace you walked through everything enough to where I could understand it all so I do appreciate what you've done and it was a great video and I hope to see more from you in the future
@SoulSeeker7703 жыл бұрын
First of all thank you for this video. Would give more detail information on the purpose of the capacitor and how it works? My multimeter doesn’t have a microfarad on it. I understand I can test resistance but afraid the capacitor is too low to use with my multimeter.
@TSAR20105 жыл бұрын
My house has a 50 year old motor and has NO problems at all!
@fishfire_29994 жыл бұрын
Thats pretty amazing
@7734186683 жыл бұрын
Yeah have you cleaned that asbestos buddy!
@TSAR20103 жыл бұрын
@@773418668 i dont think our house has asbestos.
@TSAR20103 жыл бұрын
Just has normal drywall, ceiling too.
@german696920075 жыл бұрын
Thank You very much brother, Saved me a head ache.
@HsingSun2 жыл бұрын
Thank you for your video. Question: for this motor cap, does it matter which wire goes for which terminal?
@pablemo3 ай бұрын
I saved this buzzing sound as into a musical bass for my music 🎵
@Mangoose_ola6 жыл бұрын
Thanks AdamDiy this help me troubleshoot my air handler. it is making exact noise.
@jimdavidson52087 жыл бұрын
You can also check the other speed taps to see if the motor is really bad. That is a 4 speed motor. You might luck out and be able to run on a slower speed.
@tcprodriver4 жыл бұрын
I changed my capacitor. Didn't change anything. Here's my situation. The blower stars OK the first time it is needed each day. However a few minutes later, when it needs to come on again, it just hums. Bad motor? Doesn't want to start after it is warm? Help please. Would you simply assume the motor needs to be replaced? Thanks for your great videos!
@serviceprovider69562 жыл бұрын
Crazy!!! You made my day!! Peace!!
@jimdavidson52087 жыл бұрын
Caps are made, big news. They are graded, on a +- scale. Lower the number the better the cap. Means it will be closer to the initial rating. A 10% cap is inferior to a 5% or a 3% cap. The cap you tested needs replaced. OEM installed a 12.5uf. It if isnt' that replace it.
@guernsey0320036 жыл бұрын
Replaced blower motor and tested the capacitor and it tested good. Not sure if I trust it, so I went ahead and bought one. Replaced the capacitor, and still the new motor and new capacitor will not start makes a much more silent hum than the old motor but still will not turn. Next step I am going to replace the control board UNLESS you think it could be something else I am not seeing. Help Please!
@jimbola777 жыл бұрын
thank you for sharing adam excellent video God Bless...
@ZimaletaMotors6 жыл бұрын
Thanks this is a very good video
@yourejustintim3 жыл бұрын
So the capacitor can cause the loud noise too? I just thought it was a power source for starting the fan? Sorry, if the question seems redundant. I can't hear and want to make sure nothing is lost in translation through tje closed captioning.
@ulutea123 жыл бұрын
Thank you so much, I have the same loud noise on my heater, I call almost Heater company here in Town and when they come, They told me that THEY don't know where the noise come from and they charge lots of money. This Loud noise comes and go any time, At mid night or early morning or any time in the day..My Heater is a PRESTIGE HEATER. Please Help thank you.
@warronfrench81637 жыл бұрын
Adam, did you discharge the cap before testing it with the mutli-meter? I saw the annotation about discharging. I understand you were measuring the capacitance (impedance) of the old capacitor; but not the current. I am just wondering about the discharge instructions in text, versus your actions (on the video) for clarity's sake. Great video!
@AdamDIY7 жыл бұрын
Yes I did.
@TheYongyong144 жыл бұрын
Warron French hi guys I have question about my unit so when I calling heat on the unit I heard just humming so I change the blower motor works no heat
@celestialdream49 Жыл бұрын
Thanks for the great video... it's funny your work bench looks like mine, right down to the Gorilla glue. LOL
@mosesvillani6514 жыл бұрын
Because of covid I can't get mine replaced right now. Do you think I should still use it?
@flipdzon5 жыл бұрын
I have this problem right now. Is there a video on how to discharge the capacitor? Thanks
@Ducktruckful5 жыл бұрын
I have the same hum on my Rheem blower motor. found bad bearings install new motor & matching start capacitor still has same hum. will start if you spin motor. what kind of voltage should be on terminals in start . any ideas?
@benjibumble4 жыл бұрын
are the "two prongs" in this capacitor interchangeable? Mine doesn't label the common terminal.
@jaedenspider8772 жыл бұрын
I would just try to spin it by hand as fast as I could to get it going
@fanawb5 жыл бұрын
Here’s a way to test if it’s the cap. Give the blower a good spin then turn it on. If it spins up to full speed, it’s the cap.
@2inchfromtheground5 жыл бұрын
Fanawb Productions stupid idea, idiotic even, and not accurate. You could spin the fan loosening debris or a mechanical defect. Great way to injure yourself, it takes under 2 minutes to walk outside, remove a panel and test a capacitor properly and safely
@Nb0054 жыл бұрын
Geez he/she is trying to help. It might as well be a way without tearing it apart
@fanawb4 жыл бұрын
2inchfromtheground f a l s e
@b-riair91146 жыл бұрын
That cap is out of range buddy anything under 11.25 is less than ten percent go by the capacitor nameplate not just that what is close enough
@robertnewman15936 жыл бұрын
Just replaced motor and capacitor. There was a loud rumble when fan was running. I thought maybe motor/bearings were going bad. New motor was cross referenced from Grainger Industrial. Put new motor in. Better but still a rumble on start up. Could the blower wheel somehow be bad and or the housing it is in? All wires on motor were same except one. There was an orange one on old and a yellow one on new. When running, air flow from vents doesn't seem as forceful. Where do I go with that?
@hardkore3605 жыл бұрын
22 dislikes? HVAC repair dudes maybe? 😆
@HiVizCamo5 жыл бұрын
Gotta be, no doubt.
@chuckbrown6175 жыл бұрын
Not necessarily. I don't do HVAC repair, but I gave it a "thumbs down" because testing a capacitor with a meter doesn't tell the whole story. The meter can't test for excessive electrical leakage. A capacitor can still exhibit the rated capacitance while having a lowered internal resistance (leakage due to internal breakdown of the dielectric). Also, the terminals are corroded. Since it mounts contact side down, it's not likely from condensation dripping on it (noting that the bottom of the blower housing was rusted). The capacitor could have a physical leak which will corrode the terminals. Either way, it should be replaced.
@tomdanley18182 жыл бұрын
If my old motor didn't have a capacitor and I need one for the new motor how do I know where to brown wires go on a capacitor
@enzoamore91734 жыл бұрын
Is that capacitor a run or start capacitor?
@Alikhan78611Ай бұрын
My fan turns on but not at the full capacity and it makes a noise like drum is loose but everything is right in there. Can bad capacitor cause this? I tried to use the multimeter and it reads OL instead of any number.. is my capacitor and motor are both bad.. I am so lost...
@simonwholter6507 жыл бұрын
great video thank you
@summer32456 жыл бұрын
hi adamdiy i have a janitrol furnace i can't find my capacitor lol do all furnace have capacitor
@flash_gordy84153 жыл бұрын
bro, i love you. ty
@davidandclyde7 жыл бұрын
thanks for sharing great video
@Donoprez4 жыл бұрын
Need help!!! I have 2 A/C units in my house, I just notice a homming like noice coming from the upper floor unit inside de attic. You can hear it clear were the A/C filter goes. And I smell like something got burn.
@blackbox-pu1bf6 жыл бұрын
Adam . I have a colman furnace in a mobile home but the back of the motor ( bracket end ) is what you see when you open it up. I dont see a way to slide it out . it all looks mounted in .. any ideas?
@shantelp34932 жыл бұрын
Is this from an ac unit? Everyone is saying furnace. But ac is making that noise
@La017812 жыл бұрын
Usually what does first is the bearings I bet
@jludtxs5 жыл бұрын
can a capacitor not work just sometimes? mine is 20yrs old & I pulled the fan-inside unit - to clean. It was very dirty. A few times last week the fan didn't come on with the heater but when I kicked the fan cover a couple times it did come on. The motor is shockingly clean & spins freely. I will oil it anyway. can the fan fail to come on just from 20yrs of heavy caked dirt? I wanted to change the capacitor as long as it is out but can't read a lot of the info. It has 2 poles. I can see that it is a - Cambridge 621___4A, 7.5_____10%, 370V_50/60Hz, __4_/70'C, TYP___NS1P_, _L_ No E128031, MO7C10N0, MADE IN UK. With this info can you tell what I need to get to replace it?
@justbraaapit2311 Жыл бұрын
How can i cross reference my old blower motor to something new
@LaraLatin6 жыл бұрын
This is a great video, however I can't find the capacitor. I recently changed the one outside, so I know more or less what it looks like. I don't see it attached to the motor. There is a panel board directly on the motor that has the cables for different speeds, as well as black, brown, yellow, and green/yellow cables. Please help! My unit is Carrier fx4dnf025
@flipdzon5 жыл бұрын
What if the motor is outside of the blower, it's running it with a belt. There is no capacitor that I can see. Its making the same noise. Thanks
@kerrimckeon72427 жыл бұрын
ok i replaced my fan in my house last year at the end of the winter the one i took off didnt have a cap. but the one I replaced it with does have the wires for a cap but not one on it how would i go about finding either a replacement without a cap or the cap for the one i have someone pls its really cold in mn
@emersonvalle88804 жыл бұрын
My blower motor wont start unless I tap it or gently hit it please 😢help south texas heat
@rosielopez88452 жыл бұрын
Where do I lube
@Andronicus876 жыл бұрын
What if it only makes a similar noise not quite the same and only once a day and it's cooling the house fine...? I already called a guy to come out her will be here tomorrow but I am always worried about these techs ripping me off.
@BBKBOSS12125 жыл бұрын
This is what is happening right now on my motor
@BobbyOfEarth2 жыл бұрын
11.13 uf is lower than 12.5 uf -10% but I guess it doesn't matter?
@AdamDIY2 жыл бұрын
It’s low enough that it should be replaced but usually not so bad the motor won’t run.
@stewmeat307 жыл бұрын
My Motor seems to run, but the wheel makes noise like its rubbing. wheel has play side to side. but motor shaft does not. capacitor lists 10uf but goes past 20 and didn't stop when metered. does the wheel have a bushing? capacitor issue a coincidence?
@ELVISRN16 жыл бұрын
the style of bearings that those blower motors is a joke.thats the whole issue
@cotick5 жыл бұрын
Capacitor does not have extra juice (1:02). You need to learn how it works before you teach others.
@heidiregina32635 жыл бұрын
Better be safe than sorry 😒😉😊
@waytospergtherebro2 жыл бұрын
This person has no idea what a capacitor is and you should not pay any attention to him.