There are a few reasons why your heat pump might not be blowing hot air. One possibility is that the system is not properly matched to your home. In other words, the heat pump might be too big or too small for your needs. If this is the case, then you'll need to have a technician come out and adjust the system.Another possibility is that there's something blocking the airflow in your home. This could be something as simple as a piece of furniture blocking the vent or something more serious like a clog in the ductwork. If this is the case, then you'll need to have a technician come out and clear the blockage.

There could be a number of reasons why your heat pump is not blowing hot air. One possibility is that the fan inside the heat pump is not working. Another possibility is that the furnace or air handler, which the heat pump circulates the air through, is not working. Finally, there could be a problem with the ductwork that connects the furnace or air handler to the rest of your house. If you suspect any of these problems, it's best to call a professional to diagnose and fix the issue.