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Author Topic: Carrier Heat Pump How long should a dual run capacitor last  (Read 9673 times)

Offline MerciMe

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Our house was built in 2004 and we had lots of problems with our air conditioner from the first time we turned it on and it wouldn't cool. We had multiple freon leaks and even had the coil replaced in our furnace.  We finally decided to change from the installation contractor to another company in 2009 when our a/c again failed.  They had to replace our dual run capacitor and add freon.  

Yesterday in the 100 degree heat, I noticed that the house was warmer than usual.  The air was blowing but was not very cool (probably recirculating the air in the house).  The a/c unit outside was not running.  We turned off the breaker, brushed a little cottonwood fuzz off the unit (wasn't much) and sprayed it with the hose and let it sit.  When we turned it back on, something was running but it didn't sound like it usually does and the fan was not moving.  When the serviceman came out today, he brought a capacitor with him after talking to the oncall tech we called last night.  He had it fixed in about 20 minutes and seemed surprised when I told him we just replaced it two years ago.  Can we expect to have this expense every other year?

Offline JWWebster

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Re: How long should a dual run capacitor last
« Reply #1 on: July 20, 2011, 11:09:46 PM »
These newer caps have a diff innards due to the PCB ban. They just do not hold up like the older ones did.
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Offline jumptrout51

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Re: How long should a dual run capacitor last
« Reply #2 on: July 21, 2011, 06:56:41 PM »
Give us the model number off the compressor.
It is possible too small a capacitor is on the unit.
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Offline shieldcracker

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Re: Carrier Heat Pump How long should a dual run capacitor last
« Reply #3 on: September 05, 2016, 10:38:11 AM »
Capacitors do go bad. Some are cheaply made and not as robust as in the past. I would check the voltage at your unit many times the capacitors fail because the voltage at the unit is outside the operating envelope.

Offline jagboy69

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Re: Carrier Heat Pump How long should a dual run capacitor last
« Reply #4 on: September 25, 2017, 07:48:52 PM »
If the power company screws you on electricity (brown out) this will fry brand new caps.  I leave customers that have known brown outs spare caps.  I hate getting called out late on a sunday night.


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