For most of the winter in our region, a heat pump can provide sufficient warmth all by itself. These systems work at peak efficiency even as temperatures drop below 40 degrees.
During the coldest stretches, though, a heat pump just might not quite cut it. It will try harder and harder to warm your home, using more energy than it should and still not achieving ideal warmth.
A heat pump is still an amazing piece of HVAC technology, though, and you could still reap all the benefits of it without worrying about getting too cold. How? With a dual fuel system! To provide adequate heat when necessary while keeping energy use as low as possible, a dual fuel system has a backup furnace for the heat pump.