Thermostat Wiring Colors Code [Easy HVAC Wire Color Details]

Thermostat Wiring and Wire Color Chart – Thermostat Wiring Colors Code; Tstat Terminal Designation: Color of Wire and Termination: R – The R terminal is the power. It is a red wire and comes from the transformer usually located in the air handler for split systems, but you may find the transformer in the condensing unit.

The Thermostat Wire Color Code You Need to Know

The green wire underneath your thermostat connects to the fan of your furnace or air handler. It terminates at the air handler or furnace. The green wire connects to terminal G on your thermostat. The Orange Wire. The orange thermostat wire links to your heat pump, if you have one.

Thermostat Wiring Colors & Terminals Explained ...

Thermostat Wiring Color Code. Typically, a furnace plus A/C HVAC system has four or five thermostat wires and a common wire. A heat pump system, on the other hand, has eight or more different thermostat wires.

Guide to Thermostat Wiring Color Code: making install ...

The thermostat wire is color coded so the technician can identity which wire goes to which port on each board. It’s important to note that in some cases the color of the wire does not necessarily mean it connects to that came color one the board. This could happen if the wires are swapped on both ends or if there’s a spice in the wire ...

How to Wire a Thermostat

Here is the industry standard thermostat wire color code used for most systems: White. The white wire connects to your heat. Yellow. The yellow wire connects to your compressor. Green. The green wire connects to the fan. Orange. This wire connects to your heat pump (if applicable). Red (C). The Rc wire connects to the cooling system. Red (H). The Rh wire connects to the heating system.

Wire A Thermostat

RC - Red Wire (Power 24 Vac) RH or 4 - Red Wire Jumpered (Power 24 Vac) W - White Wire (For Heating Enable) Y - Yellow Wire (For Cooling Enable) G - Green Wire (Controls Fan ON-Auto) The diagram shows how the wiring works. However your connections may seem a little different on the thermostat itself. Just take a look at the picture below the diagram.

How do I wire my thermostat?

Next, let's talk about the C, or common wire. If you have a Trane model thermostat, and have a wire labeled X or B refer to your thermostat manual. In some cases, one of those wires may be your common. If you have a C wire, place it into the C terminal on your wall plate. Let's take a look at the G wire.

Thermostat Wiring for Dummies – How Anyone Can Do It

White – The white wire is what connects to the (auxiliary) heat on your system. Yellow – The yellow wire connects to your compressor. Green – The green wire connects to the fan. Orange – This wire connects to your heat pump (if you have one).

Thermostat Wiring For Dummies

Mistakes Made During Thermostat Wiring. Anyone can handle the wiring for a thermostat, but that doesn’t mean that carelessness won’t mess up the job. Even messing up the little things can have long-term effects that slowly degrade system performance. It’s important to approach this project like any other, regardless of the skill level ...