A. Check for a dirty filter, is the power switch on, is the circuit breaker tripped, is the thermostat set to heat or cool and the proper temperature?

A. A lot of people are in the same boat as you because natural gas prices, especially in the Midwest, have soared in the last few years. One way we've helped customers cope is with Trane's Hybrid Heat system. It's a high-efficiency natural gas furnace combined with a high-efficiency electric heat pump. It's often referred to as a "dual fuel" system.