Shuab A Jersey City , NJ December 31, 2023 Appliance: General Electric Room Air Conditioner AZ65H07DABW2 When I selected for heat you could hear the unit switch over, but you would not feel any heat. I replaced the heater assembly and it works fine. Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Nut Drivers