What color wire goes where on a Honeywell thermostat?

W (white) controls the auxiliary heating elements. Y (yellow) controls the compressor on the cooling system. G (green) controls the fan. C (blue or black) provides a return path to the transformer.

Can I install a Honeywell thermostat myself?

And yes, we can even install either smart thermostats like the Nest, Ecobee, Lyric, or conventional style thermostats like Honeywell, Emerson and White Rodgers.

Where does the red wire go on a Honeywell thermostat?

The red wire should be connected with the Thermostat RH terminal. You can also connect it to the RC terminal with a jumper wire between the RH and the RC. If you only have one R terminal for both heating and cooling, connect it to that.

Does R go to RC or RH?

In a thermostat, the R wire is responsible for powering the entire HVAC system (through a transformer). If you have both an Rh (Red-heat for powering the heating) and an Rc (Red-cool for powering the cooling), then the R wire can be connected to either Rh or Rc.

How many wires does a thermostat need?

The most basic thermostat has 2 wires; usually a red and a white wire. Two wire thermostat wiring is used for furnaces only and usually doesnt need a “C” or “Common” wire. Thats why we only need two wires: Red wire for power (24h).

How many wires do I need for my thermostat?

The most basic thermostat has 2 wires; usually a red and a white wire. Two wire thermostat wiring is used for furnaces only and usually doesnt need a “C” or “Common” wire. Thats why we only need two wires: Red wire for power (24h).

How do I install a programmable thermostat?

1:162:33How to Install a Programmable Thermostat - YouTubeYouTube

Does red wire go to RH or RC?

There is no standard for the colour of the RH wire, but most units use a red one. The RC wire, on the other hand, refers to “red cooling”. Its the same with the RH wire in that it powers the thermostat. For the RC, it powers the cooling system.

What is the red wire on my thermostat?

Red or “Rc” Wires Red wires, specifically Rc wires, are responsible for 24-hour volt AC power from your transformer. These wires only connect to your cooling system. Rc wires connect to the RC terminals on your thermostat.

What is the difference between RC and RH on a thermostat?

RC: The RC terminal is the 24-volt cooling power supply. RH: The RH terminal is the 24-volt heating power supply. (Note: The RC and RH terminals are jumpered together in a four-wire heat/cool system and a single-stage heat pump system, but not in a five-wire heating/cooling system.)

Why is there a jumper between RH and RC?

Effectively there isnt a second RH wire, although there is an RH terminal. However, the heating still needs to be controlled, so a wire known as a jumper is connected between the RC and the RH terminals so that power gets to the heating control part of the thermostat.

How do I know what wire to use for my 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). Red (H). Blue.

What is 2 wire thermostat?

If we put it simply, a 2 wire thermostat is one which has only 2 wires coming out of its backside. When it comes to low voltage systems, a 2 wire thermostat is usually known as a “heat only thermostat” and is used for systems like a gas furnace (with only heating option).