Heat Pump Thermostat Wiring - Air Conditioning Systems If you are looking for a better understanding of heat pump thermostat wiring, here is an example of a typical electronic type heat pump control wiring which is located inside your house. There are many types of electronic thermostat in the market these days, hence please check that the type of thermostat that you are using can be replaced with the newer ones. Heat Pump Thermostat Wiring Chart Diagram – HVAC Heat Pump Thermostat Wiring Chart. This is for use for heatpumps. You should 100% make sure that you have a heat pump system and not an air conditioner with electric heating strips as it is a common mistake for people to misidentify their HVAC systems.