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been meaning to order a spare A/C capacitor all summer
Posted on 8/18/23 at 9:43 pm
Posted on 8/18/23 at 9:43 pm
finally got around to it last weekend...it arrived yesterday...the one on my unit went bad today...15 minutes later I was back in business...guess I'm living right
thanks for all the folks who suggested it
thanks for all the folks who suggested it
This post was edited on 8/18/23 at 9:44 pm
Posted on 8/18/23 at 10:05 pm to jlsufan
Nothing is more satisfying than when it starts working, whether a capacitor for AC in the summer or clearing out that pesky pressure sensor for the exhaust fan on the heater in the winter.
Posted on 8/18/23 at 10:18 pm to jlsufan
Did you follow a specific video on how to change it? I have a spare but I don’t want to electrocute myself if mine goes out.
Posted on 8/18/23 at 10:44 pm to meeple
quote:
Did you follow a specific video on how to change it? I have a spare but I don’t want to electrocute myself if mine goes out.
If you have any basic tool skills you can do it. The most important part is to pull the disconnect at the unit and then discharge the capacitor. This video is pretty good at showing the steps:
LINK
Posted on 8/19/23 at 7:04 am to meeple
Friend,
I am not the handiest person in the world when it comes to electronics, but I have changed many AC capacitors. It is very easy to do and should take less than ten minutes. Once you do it, doing it a second time will take three minutes. Capacitors run $15-$25. AC repairmen will usually charge $250-300 to replace it.
Yours,
TulaneLSU
I am not the handiest person in the world when it comes to electronics, but I have changed many AC capacitors. It is very easy to do and should take less than ten minutes. Once you do it, doing it a second time will take three minutes. Capacitors run $15-$25. AC repairmen will usually charge $250-300 to replace it.
Yours,
TulaneLSU
Posted on 8/19/23 at 8:13 am to jlsufan
Better than hitting the lottery.
Posted on 8/19/23 at 8:13 am to jlsufan
Now order another to have a back up.
Posted on 8/19/23 at 8:15 am to Bayoubengal85
yup...already on order ;-)
Posted on 8/19/23 at 8:26 am to jlsufan
How did you know what cap to order?
Posted on 8/19/23 at 8:52 am to LordSnow
if you know or can find you unit's model number you can likely look it up on the internet, but it's easy to just remove the cover on the unit and see what is currently in it
you are looking for the capacitance value on your capacitor's label...it's a number followed by either MFD or uF (for microfarads)...some have 2 capacitors internally, one is the capacitor for the compressor and the other is the capacitor for the fan, so they'll list 2 numbers...mine was a 40/5 MFD meaning it has a 40 MFD and 5 MFD capacitor bundled together internally and so has 3 terminals
you also want to match the max rated AC voltage that yours lists...in the picture below this one was rated for 370 or 440 VAC...as long as the replacement meets or exceeds this max VAC you are good

you are looking for the capacitance value on your capacitor's label...it's a number followed by either MFD or uF (for microfarads)...some have 2 capacitors internally, one is the capacitor for the compressor and the other is the capacitor for the fan, so they'll list 2 numbers...mine was a 40/5 MFD meaning it has a 40 MFD and 5 MFD capacitor bundled together internally and so has 3 terminals
you also want to match the max rated AC voltage that yours lists...in the picture below this one was rated for 370 or 440 VAC...as long as the replacement meets or exceeds this max VAC you are good

This post was edited on 8/19/23 at 8:55 am
Posted on 8/19/23 at 10:14 am to jlsufan
Call the AC guy. He has to eat too
Posted on 8/19/23 at 10:52 am to bapple
im really curious about how the unit is going to react if the capacitor goes bad while having a soft starter on it, will the soft starter detect it and not start the compressor? the thing is the soft starter actually has a starting capacitor in it that temporarily goes in parallel with the main capacitor while the TRIAC ramps the current on the run winding, will it still be able to start the compressor?
Posted on 8/19/23 at 3:52 pm to meeple
The hardest part is dealing with the wasps that are nesting in the breaker box and area where the capacitor is.
Posted on 8/19/23 at 4:20 pm to Bayoubengal85
quote:
Now order another to have a back up.
I’ve got 3 on the shelf. Also spare fan motor, contactor, another cap for blower fan along with a spare transformer.
And all that for less than one service call.
Posted on 8/20/23 at 10:00 pm to EF Hutton
quote:
Call the AC guy. He has to eat too
I'm going to DIY my whole system, ducts and all this spring time and post a play by play just to piss you off.
Posted on 8/20/23 at 10:39 pm to EF Hutton
Not this again. AC guy is fat and happy this summer.
Posted on 8/21/23 at 9:45 am to jlsufan
How do you know that the capacitor is the problem?
Posted on 8/21/23 at 9:48 am to Shanegolang
quote:Had to have a guy come out earlier this summer for a capacitor(I did not know that was the issue) and he found three nests.
The hardest part is dealing with the wasps that are nesting in the breaker box and area where the capacitor is.
Posted on 8/21/23 at 9:52 am to jlsufan
To those who have often changed them on their own: do you find a marked difference in the made in USA vs made overseas brands of capacitor (aside from the ideological aspects from buying American)?
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