Answered by a verified electrician this is a typical wiring diagram for a 2 wire thermostat. Heat pumps are different than air conditioners because a heat pump uses the process of refrigeration to heat and cool while an air conditioner uses the process of refrigeration to only cool the central air conditioner will usually be paired with a gas furnace an electric furnace or some other method of heating. Heil 5000 air conditioner wiring diagram electric furnace dc90 beautiful handler beautif ac unit jugs pitching machine collection wi schematics trailer blower motor electrical work o diagrams page house electr old lively for a heat pump thermostat condenser tail gate schematic in depth fresh pumps reviews today review fantastic light switch.