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Originally Posted by retiredguy123
Baloney is correct. The achievable temperature difference between outside and inside temperatures should be at least 20 to 25 degrees. I would suggest that you write down the model number and serial number for your Carrier system from the sticker on the inside air handling unit. Then, go to the Carrier warranty website where you will see the exact status of your warranty. You can also find the authorized Carrier dealers in the area. The most prominent dealer is Munn's.
Some HVAC repair companies claim that they can do Carrier warranty work, but I suspect that some of them will partner with another contractor. For example, if a non-authorized company diagnoses a defective compressor, I doubt that Carrier will send them a new compressor under a warranty claim because the compressor could have been damaged by a faulty installation.
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The best way, and probably the most accurate way to check if you A/C is running correctly temperature wise is to take a temperature probe and stick it through the foam return duct at your air handler and take a reading then do the same at the output at the top of the air handler. The most you should see is a 20 degree temperature differential. 15-20 degree differential is considered "normal" but it should be close to 20 degrees once running for about 15 minutes. This will remove all the other variables trying to measure against the outside temperature. You can then take blue tape and cover the holes for next time. These HVAC temperature probes are available on amazon.
Amazon.com