When the house was built in 1996 I had an Apollo Heating System. This system was not heating our home enough so we installed a Munchkin 80M unit that is about 15 years old. The past few years it has been making a groaning noise when starting up. It finally died this week. I was getting an error code F09. After some troubleshooting I decided to open it up. I have posted pictures of what I found. The back plate is damp. I wanted some advice on whether to replace parts or get something else. This unit heats my downstairs main floor only. This past summer I had to replace my upstairs AC unit and went with a Trane XL16 heat pump. Should I just replace the main floor AC unit (which is 23 years old) and get a heat pump. I still have a hot water tank in the garage for my water.

