We have a weather maker 8000. Wehen we turn it on so that the heat can come on, it blows out cold air. It doesn't seem to be igniting. My home is extremely cold, and we're in the middle of a snow strom. What should I do? Can I fix this myself? It just all of a sudden stopped working.

Clean off your flame sensor inside the furnace. There's a sensor that could be dirty you need to clean it off with some fine grit sand paper or even an sos pad or something. The furnace thinks there is flame and there isn't because the flame sensor is dirty. You'll see it, it sticks out where the flames shoot out of the burners