Well for the rest of the summer I decided to fix the old unit. I found a used Atwood bilge blower on EBay for $25 and scrapped the guts for the fan motor. I then submerged the heater core and pressurized it to find the leak. I used silver solder and my torch to fix the hole in the core and put the thing back together. If it’s not to hot tomorrow I’ll reinstall it.
