When the leaves start to fall and the nights start to get crisp, I usually remember that I'm supposed to clean or change the furnace filter once a month. My furnace is brand new, so I wasn't sure exactly where the furnace filter was located. Fortunately, I kept all of my information guides that my contractor left for me.
I have a Trane XR90 Gas Furnace with an Energy Star annual fuel utilization efficiency (AFUE) rating of 92.1. That means that 92% of the natural gas that I pay for actually gets used to heat the house. Two little tabs on the furnace door make it easy to reach the furnace filter, and all I had to do was vaccuum it to remove the dust, then slide the filter back into place. The price of the Trane XR90 varies by the size unit that you buy for your home and the labor costs involved in the installation. The Trane XR90 Natural Gas Furnace heats up quickly and quietly, and the blower is powerful enough that my upstairs bedrooms are always warm. I have budget billing for my natural gas bill, but the Trane XR90 Gas Furnace is the only natural gas appliance that I have, and I averaged $75 per month for my natural gas bill last year to heat a 1, 250 sq ft home throughout a very cold and snowy northern PA winter. The Trane XR90 Gas Furnace pays for itself.