Just FYI: My propane storage tank is very old. The propane lines coming into the house and supplying all my appliances are new (replaced 2 years ago).
Okay, last winter I noticed a funny smell in the house. Turns out the entire downstairs heating system was coated in soot and the heat exchanger was cracked. The heating people replaced the heat exchanger.
Four weeks ago, I noticed the funny smell again. Guess what! Soot and a cracked heat exchanger.
Also, I was told by the heating people that allowing my propane tank to go below 30% causes reduced pressure and incomplete combustion. He told me this possibly caused the problem. Is this true? I really believe the problem is with the heating unit itself because my upstairs unit is fine and clean.
Is it possible that something else is wrong with the heating unit (i.e. pressure regulator) that could cause this?
Thanks for any help you can give.