Arrived to house maintaining 81 degrees. Customer states that cold air was coming from the vents. Checked and found that supply air was at 95.5 degrees. I explained to the customer that a heat pump is designed to maintain the home at a certain temperature and that even if the air coming from the vents feels a bit cool that it is heating the home. Customer put the system on emergency heat because he wanted to feel the warm air at the vents. Checked charge and defrost cycle. System operating normally at this time. Customer states that Donna would cover the service fee. Pausing until payment is processed.