A furnace heats your home by burning fuel (like gas or oil) or using electricity to create warm air. A heat pump, on the other hand, moves heat rather than generating it — it pulls warmth from the outside air to heat your home in winter and reverses the process to cool it in summer. In short, a furnace only heats, while a heat pump can both heat and cool your home. Flush King Air can help you choose which system fits your home and budget best.