Welcome to the forum its a great place to get your questions answered. Keep in mind a heat pump will only rase the temp between incoming cold air to outgoing warm air 20* at best 58 ambient 78 output. So the air you feel may not seem warm enough as compared to what a furnace would produce. Measure the cold air return and the output closet to the unit to see what the delta T is.
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho