A 5-wire thermostat system typically supports more advanced heating and cooling functions compared to a 4-wire system. It can control a two-stage furnace, a combination of a single-stage furnace and a single-stage air conditioner, or a first-stage heat pump system. The additional wire in this setup allows for more nuanced control of the HVAC system, facilitating energy efficiency and more consistent indoor temperature management. Systems with such configurations are more adaptable to varying weather conditions and can offer enhanced comfort. For a comprehensive guide on thermostat wiring, check out HVAC Alliance Expert.
How does thermostat wiring affect energy efficiency?
The wiring of a thermostat plays a significant role in the energy efficiency of an
