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FYI, Most A/C systems will not run with outside temps below about 40 deg. F. There is a low pressure switch in the system that will open to prevent the compressor running. It is possible to go all winter without the compressor running if the temps stay cold even in the defrost mode. So you may think you are running the A/C to lube the seals but you are not if it's cold out.
When its cold out the air can not hold much moisture so the air is very dry when the HVAC system heats up the air to defrost the windows, the a/c is then not needed to dry the air.
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