First off, let me say that this is a great site. I was in the market recently for a new HVAC, and I read and learned a great deal about HVAC systems and a little about how they operate.
Anywho, last week I had a local reputable installer install a new Heil 5 ton split system heat pump with a 2 stage compressor and a variable speed air handler to replace an old Goodman unit.
When I turned the heat on to get the early morning chill out of the house for the first time since the new install, the system didn't seem like it was blowing warm air. Is there a standard rule of the temperature differential between the return air and the air coming from the registers. For example, if the return air temperature is 65 degrees, what should the temperatue be exiting the registers?