The Thermostat Wire Color Code You Need to Know

This thermostat wire color code will help homeowners understand the anatomy of their thermostat: White wires Yellow wires Green wires Orange wires Red or “Rc” wires: Industry standard for geothermal heat pumps Rh wires: Industry standard for geothermal heat pumps Blue or “C” wires

Thermostat Wiring Colors & Terminals Explained ...

Thermostat Wiring Color Code R, RH & RC Terminals. The red wire is usually the 24 Vac power wire, which begins at the transformer. It runs to the R,... W Terminal. The W terminal the one that triggers the heating. It connects directly to the furnace, boiler or other... Y Terminal. The wire that ...

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 ...

Thermostat Wiring Colors Code [Easy HVAC Wire Color Details]

Thermostat Terminal Designations Quick Guide - Detail Wiring Color Guide Below. Red-Wire - connects to the R terminal. RC-Wire - connects to the RC terminal. RH-Wire - connects to RH terminal. Y-Wire - connects to the Y terminal and is for cooling stage 1. Y2-Wire - connects to Y2 terminal and is for cooling stage 2.

Interpreting Thermostat Wire Colors | DoItYourself.com

Installing a thermostat is more difficult if you are not familiar with the color codes of thermostat wire. These color codes are vitally important in connecting the right wires to the corresponding terminals. Failure to properly link these can lead to failures in the system, including short circuits, which can lead to fires.

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

Types of Thermostat Wire. There are a variety of thermostat wire types. The main difference setting each apart is the number of colored wires. HVAC systems with more functions need more wires to communicate to and from the thermostat. The most common is 18/5 (5 strand, 18 gauge). The 5 strands of wire provide enough functions for the modern ...