Gas Furnace With Ac Thermostat Wiring

Most homeowners with moderate home improvement skills can wire a heat only thermostat.
Gas furnace with ac thermostat wiring. When the red wire is disconnected from w the. If any cooling like an air conditioner or fan control is required more wires are needed. Heating and cooling equipment comes in many forms ex. Heating only systems use two wires air conditioning adds two more wires and if you have a two stage furnace you ll need yet one more wire.
The simplest setup for a heating system is a two wire thermostat. Once your c wire is ready follow these steps to install your new 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. For example if the red wire is connected to w on the thermostat the furnace should turn on.
Label where the wires are connected on the thermostat check to see if they match the industry standard listed above. The most basic of systems such as an older heat only forced air gas furnace with a standing pilot light only need two wires for control. Heat pump gas furnace air conditioner air handler etc with a variety of features. If the unit requires only two wires the system is only able to heat the space.
It is actually fairly easy to install a thermostat to control a forced air furnace. The kind of heating and cooling system you have will determine how many wires run from your furnace to your thermostat. It often comes down to what type of system was installed and the wiring or lack of wiring between that equipment and the thermostat. The hvac equipment.
How to wire an air conditioner for control 5 wires the diagram below includes the typical control wiring for a conventional central air conditioning system furthermore it includes a thermostat a condenser and an air handler with a heat source. Thermostat wiring diagrams for heat pumps heat pump thermostat wire diagrams. They connect to a two wire thermostat generally a mechanical thermostat with a mercury filled ball connected to a coiled bi metal strip.