Our furnace is only 3years old, it was expensive. There is a round psi gauge on the front that is always at 0, I've never seen it move. The gauge looks like it is brand new. Could this be the reason we are burning 100 gallons a week, and keeping the thermostat at 60degrees. HELP, we just had it cleaned and nothing was mentioned (perhaps he didn't run it long enough?)
What can I do to try and fix it.