How to Wire a Heat Pump

In this video, learn the steps for wiring a heat pump system, including the thermostat, furnace and heat pump unit.   December 15, 2023


By Ryan Hoger, Contributing Writer


In this instructional video, Ryan Hoger guides viewers through the process of wiring a heat pump system, highlighting the key differences between wiring a heat pump and a conventional air conditioning (AC) system. The focus is on a split system, which includes a heat pump combined with a natural gas furnace. The video covers the wiring of the thermostat, furnace, and heat pump.  

Viewers will learn about the thermostat wiring terminals, which include C (common), R (hot), G (fan), Y (compressor), and a notable difference for heat pumps—W1 and W2, where W2 is used for the heat pump's auxiliary heat. Viewers will also learn the specifics of configuring the reversing valve. 

For the furnace, there is a demonstration of the wiring process, showcasing wires coming from the thermostat into the furnace and then out to the heat pump. Moving on to the heat pump, the reversing valve is a major component differentiating a heat pump from an AC unit. The wiring process involves connecting wires such as O (reversing valve), R (24-volt power), W (heat), G (fan), and Y (compressor).  

Watch more videos from Slipstream:  

How to Wire a Thermostat on a Gas Rooftop Unit

Testing Amp Draws on Rooftop Units  

Watch videos from our Facilities In Focus Series:  

The Role of Resilience in Successful Facilities Operations  

Indoor Air Quality Impacts Student Performance and Comfort  

Ryan Hoger is a contributor with Slipstream.   

Next


Read next on FacilitiesNet