We have a Lennox Elite series high efficiency gas furnace. It was installed about ten years ago and is serviced annually. A couple of years ago, it gave some problems and we had the pressure switch, venter motor and motherboard replaced.
From time to time, when the furnace is not actually running, if I go into the furnace room, I detect a very faint odour of natural gas. I asked the service technician if this is normal. He said there will always be a slight odour of gas around a gas furnace.
The gas pipes and the air intake and exhaust pipes all run through the back of the garage - this was the only way to install them, as we have no chimney (House was originally heated by baseboard heaters and then an electric furnace before we installed the gas furnace.) I occasionally smell a faint odour of natural gas in the garage during the heating season.
Should I be smelling any gas at all, either in the furnace room or in the garage? Many thanks for any advice you can provide.