How does System Match work?
Nest senses what wires are connected and asks you a few questions so it can offer different features specifically for your heating or cooling system.Read more
Nest will not turn on after installation
Nest will turn on automatically once it connects to your heating and cooling system and the power had been turned back on. If Nest doesn’t turn on as expected, try the steps below to troubleshoot.Read more
Is Nest compatible with dual fuel hybrid heating and cooling systems?
A dual fuel heating and cooling system (also called a hybrid or packaged system) is a combination of a heat pump for primary heating and cooling and a furnace (usually gas or oil) that provides a second and/or third stage of heating. The Nest Learning Thermostat is compatible with these systems and supports up to 2 alternate heat sources.Read more
A step-by-step guide to setup on the Nest Learning Thermostat
After installing your Nest Learning Thermostat or resetting it to defaults, you’ll be asked a series of questions about your heating and cooling system and your home. We’ll walk you through each part of the process.Read more
Nest can’t detect wires that are installed
Nest detects wires by testing them in two ways: mechanically (is a wire inserted?) and electrically (is there an electrical signal on the wire?). If a required wire fails either of these tests, setup may not continue.Read more
How do I set up Nest to work with my whole-home humidifier or dehumidifier?
The 2nd generation Nest Learning Thermostat is compatible with most whole-home humidifier and dehumidifiers. However, professional installation is strongly recommended.Read more
How can I tell if I have a heat pump or conventional system?
Heat pumps are controlled and connected differently than conventional heating and cooling systems. Here are some tips to help you determine which system type of system you have.Read more
I see a “Failed to connect” message when attempting to join my Wi-Fi network
When you join your Wi-Fi network, Nest attempts to connect wirelessly to your Wi-Fi router. This article will help you learn more about how to troubleshoot most Wi-Fi connection issues that may occur with Nest.Read more
Should my B wire go in Nest’s O/B connector? Or is it a common wire that belongs in the C connector?
While usually a wire labeled B goes in Nest’s O/B connector, for some systems the B wire is actually the common wire. The common wire, usually labeled C, should go in Nest’s C connector.Read more
How do I know if my heating and cooling system works with Nest?
Nest works with over 95% of 24V heating and cooling systems, including gas, electric, oil, solar, hot water, geothermal, forced air, heat pump and radiant.Read more
What is the connector on the 2nd generation Nest Learning Thermostat?
The Nest Learning Thermostat includes a connector that can be used for a few different functions: stage 3 heating, emergency heat, humidification, or dehumidification.Read more
2nd generation Nest Learning Thermostat Installation Guide
You can download a PDF version of the installation guide for the 2nd generation Nest Learning Thermostat here.Read more
My old thermostat has two labels for each connector.
Some thermostats have two labels for each connector: one for conventional systems and one for heat pump systems. To determine which labels are correct for your wires, you'll need to know which type of system you have.Read more Read all articles