The answer to 'how to fix heat pump' is to first diagnose the issue and then perform the necessary repairs or maintenance. Common heat pump problems include refrigerant leaks, faulty compressors, and issues with the reversing valve. Start by checking the air filters and clearing any debris around the outdoor unit. If the problem persists, you may need to call a professional HVAC technician to inspect the system and make the necessary repairs.
Fixing a heat pump often requires specialized tools and knowledge, so it's generally best to have a qualified technician handle any major repairs. However, there are some basic maintenance tasks that homeowners can do themselves to keep their heat pump running efficiently.