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Any way to get an AC capacitor in town without a license?

Posted on 7/3/22 at 9:32 am
Posted by gorillacoco
Baton Rouge
Member since Oct 2009
5318 posts
Posted on 7/3/22 at 9:32 am
I bought a spare capacitor for my ac unit a while back by looking up the ac model number. Apparently there are multiple ones though because it doesn’t match with the one in my unit next to the compressor. This morning the fan won’t turn on, compressor appears to run but no fan, and ac inside is blowing room temp air.

Anyway I need a capacitor (I think) but as far as I know you can’t get one in town without a license. Anyone know a way around it?
Posted by WPBTiger
Parts Unknown
Member since Nov 2011
30877 posts
Posted on 7/3/22 at 9:46 am to
A/C wholesalers usually require a license, you may get lucky and one will sell to you.

Post the numbers on the one on your unit and your spare. You may be able to get by with the one you have. Hopefully someone knowledgeable like CrawDude will look at this post.
Posted by ItzMe1972
Member since Dec 2013
9776 posts
Posted on 7/3/22 at 9:48 am to
You may be able to kick start the fan with a stick. Give it a spin. But you do need to get it fixed asap.

Most AC supply houses are closed on Sunday, but will sell you one on Tuesday after the holiday at a higher price than they do to HVAC companies.

Does the cap you have not fit size wise or are the readings different? 35/5 etc?
This post was edited on 7/3/22 at 9:49 am
Posted by Unobtanium
Baton Rouge
Member since Nov 2009
1592 posts
Posted on 7/3/22 at 9:54 am to
Coburns sells all a/c parts not in contact with refrigerant to anyone. Try them.

I have a used but functional capacitor - 60/5 MFD. It's yours if the size works on your unit.

ETA e-mail: unobtanium_td@outlook.com
This post was edited on 7/3/22 at 9:59 am
Posted by CrawDude
Baton Rouge
Member since Apr 2019
5264 posts
Posted on 7/3/22 at 9:55 am to
Are you saying the microfarad numbers on the spare capacitor don’t match with the microfarad numbers on the capacitor already in the unit? The size and shape of the spare capacitor can differ from the original but that doesn’t matter as long the microfarad numbers are the same on both capacitors.

Do you have a digital multimeter with a microFarad function on it, as it’s easy to check if capacitor in the unit is bad. Alternatively, can you spin the fan through the grill with a stick, screw driver, etc when the system kicks on and fan stays on?

There are places in town that you can buy a capacitor without being a licensed tech but I’m not aware of any open on Sunday - Grainger, Colburns (I think), St Gabriel Hardware usually has a couple AmRad Turbo 200 universal capacitors in stock - you set the microF settings to match your capacitor with jumper wires supplied.

Of course it’s always possible you have a bad fan motor, hopefully it’s just the capacitor.
This post was edited on 7/3/22 at 11:39 am
Posted by LEASTBAY
Member since Aug 2007
14263 posts
Posted on 7/3/22 at 10:53 am to
Bought one at Coburns in MS a week ago. Where do you live baw? I have 2.
Posted by EA6B
TX
Member since Dec 2012
14754 posts
Posted on 7/3/22 at 10:59 am to
I bought one at Grainger some years back, they sell to anyone. If you can wait a day or two, order off Amazon.

Physical size, and shape do not matter if you can figure out a way to secure it. The voltage rating must be the same or greater, the capacitance needs to be the same., but slightly higher wouldn’t be a issue.
This post was edited on 7/3/22 at 11:04 am
Posted by gorillacoco
Baton Rouge
Member since Oct 2009
5318 posts
Posted on 7/3/22 at 11:00 am to
80+10 MFD is the rating on my capacitor. I found some on Amazon that will deliver Tuesday, just unfortunate it happened over a holiday wknd. I will try coburns if they are open.

Also I tried the manual starting (stick) but no luck with that. Is that a guarantee it’s not the capacitor?
Posted by LEASTBAY
Member since Aug 2007
14263 posts
Posted on 7/3/22 at 11:12 am to
I have an 80+7 , not sure if that works. I'm in Metairie.
Posted by Unobtanium
Baton Rouge
Member since Nov 2009
1592 posts
Posted on 7/3/22 at 11:13 am to
Depending on age, the fan motor itself could be failing.

If you can, pull the fan/shield off and spin the blades. If it turns freely then it's likely the starting capacitor. If it makes any noise while spinning it has a bad bearing.

Another option - find a 10MFD capacitor and hook it up to the fan since the compressor is working OK.

Option of last resort - buy a box fan and ty-rap it over the condenser fan. Plug it into the nearest outlet and that might get you through the weekend.
Posted by gorillacoco
Baton Rouge
Member since Oct 2009
5318 posts
Posted on 7/3/22 at 11:17 am to
quote:

Do you have a digital multimeter with a microFarad function on it, as it’s easy to check if capacitor in the unit is bad.


Nah I checked and my meter only measured ohms amps and ac/dc volts unless I’m misunderstanding it. Not sure what the hFE setting does.

Posted by ItzMe1972
Member since Dec 2013
9776 posts
Posted on 7/3/22 at 11:45 am to
What size is the spare capacitor you bought?

Posted by Shoalwater Cat
Pville
Member since Dec 2017
688 posts
Posted on 7/3/22 at 11:59 am to
If its just the fan,,put a water hose with a sprayer on it. Turn it towards the fan and let it do the cooling of the coils for you...it works..or at least it did several years ago on an older unit.
Posted by gorillacoco
Baton Rouge
Member since Oct 2009
5318 posts
Posted on 7/3/22 at 12:08 pm to
88-106uf

ETA: it’s only got two terminals though. The old one has three
This post was edited on 7/3/22 at 12:09 pm
Posted by CrawDude
Baton Rouge
Member since Apr 2019
5264 posts
Posted on 7/3/22 at 12:10 pm to
Unfortunately your multimeter doesn’t have a capacitance function, if it did this would be this symbol on the meter “All multimeters use the "–|(–” symbol for capacitance.”

So just to be clear you are saying you have 80/10 capacitor in your condensing unit but your spare has a different numbers - correct?

I can’t say for sure that the fan not operating when you give it spin when the HVAC starts indicates with certainty it’s a bad fan but it’s not a good sign. With the system not operating if you can give the fan a hard spin and the blade rotates several revolutions it’s not likely a bad bearing in the fan motor. If fans blades rotates just a 1/4 or 1/2 revolution then stops it’s likely a bad bearing/bushing) in the fan motor and it will need to be replaced (I had to replace mine a couple years ago with this issue). Often when the bearing/bushing in the fan motor begin to fail you hear a loud squealing high pitched sound from the fan motor.

You could try as Unobtanium suggest and place a good sized box fan on top of the grill to pull the heat away from condensor coils when the compressor runs as a temporary fix and see if your HVAC begins to cool, assuming the issue is a bad fan motor, but I’d be cautious with that without HVAC tech entering the thread and suggesting that, only because I’d hate to see you potentially damage your compressor if it doesn’t have protective high pressure/low pressure cutoff switches - not all HVACs do - mine doesn’t.
Posted by ItzMe1972
Member since Dec 2013
9776 posts
Posted on 7/3/22 at 12:12 pm to
Yeah, that' just for the compressor. Most are dual capacitors.

If you had a 10mf you'd be in good shape as that's the fan part.
Posted by pwejr88
Red Stick
Member since Apr 2007
36157 posts
Posted on 7/3/22 at 12:13 pm to
There’s a place on Florida that sells to the public. I bought there myself
Posted by gorillacoco
Baton Rouge
Member since Oct 2009
5318 posts
Posted on 7/3/22 at 12:15 pm to
quote:

you had a 10mf you'd be in good shape as that's the fan part.


I have a buddy down the road who has a 10mf capacitor. Mine is 80/10. Can I connect the fan across the 10mf capacitor separately and leave the compressor on the 80/10 one?
Posted by CrawDude
Baton Rouge
Member since Apr 2019
5264 posts
Posted on 7/3/22 at 12:22 pm to
quote:

88-106uf ETA: it’s only got two terminals though. The old one has three

Sounds like that spare isn’t a dual run capacitor (3 terminals, common, herm, and fan; basically 2 capacitors in a single body) but rather is one that just operates the compressor, meaning you’d need a separate 10 uF capacitor for the fan (as unobtanium mentioned). You could post photos of both the old and spare capacitors, terminals in the photos, and we could likely verify.

Amazing the frequency this stuff fails on weekends, holiday weekends at that.
Posted by ItzMe1972
Member since Dec 2013
9776 posts
Posted on 7/3/22 at 12:23 pm to
I have a buddy down the road who has a 10mf capacitor. Mine is 80/10. Can I connect the fan across the 10mf capacitor separately and leave the compressor on the 80/10 one?
---

Yes indeed!
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