Penning came out(50.00 to take a look) and wanted to charge me 190.00 for a water heater thermo-coupler. When I found the part, it cost 12.00. I think that is a profit of 178.00 on the part alone… plus the service call would have made 240.00 for a 12.00 part. I had it installed for 40.00…total cost 52.00… I think you can do better.