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Yep, the large line is hot and there is cold air coming out of the top.

He was a friend in the HVAC biz who just happened to be on call yesterday. Works on YORK units and just didn't have any Carrier parts. He didn't charge me anything to look at it, so no payment.
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I have an 8 year old Carrier heat pump. Yesterday, it stopped blowing cold air and began blowing heat. With the thermostat set to cool. I had a non-carrier technician check it today, he said it was...