A hybrid heat system reacts to changes in temperature and automatically adjusts to the method available to heat or cool a house.
It requires a furnace with a heat pump.
[2] Hybrid heat works with gas furnace and electric heat pump systems[3] or using a variable-speed fan.
Variable-speed fans use direct-current-electronically commutated motors (ECM).
A heat pump can reduce electricity use by up to 40% by transferring heat instead of making heat with fuel, for example a gas furnace.