There could be a few reasons why your heat pump isn't cooling. One possibility is that the unit is not sized correctly for your home. If it's too small, it won't be able to cool your house effectively. Another possibility is that the refrigerant lines or coils are dirty or blocked. You can check this by cleaning the filters and checking the airflow. If there's a problem with the coils, you may need to call a technician to have them cleaned or replaced. It's also possible that there's something wrong with the compressor or the thermostat. If you've ruled out all of the other possibilities and still can't figure out what's wrong, then it's best to call a technician for help. AmeriTech Heating & Cooling can help you diagnose and fix any problems with your heat pump. Give us a call today to schedule a service appointment.