The Nest Learning Thermostat works with 95% of 24 V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal. This is based on data gathered through Nest’s online compatibility tool. Thermostats are often placed in a cool part of the home, such as the hallway. This can cause the heating to come on more frequently than is required in warmer rooms like the kitchen. Place a temperature sensor in the kitchen, for example, and the thermostat will know not to come on when the room is already warm from your evening cooking. As long as the thermostat base is from the same model, generation and country/region as the thermostat display, you can swap bases and displays. Some countries use high-voltage wiring for thermostats while others (such as the US and Canada) use low-voltage wiring. Nest designed different thermostats for high- and low-voltage system wiring. High-voltage and low-voltage Nest thermostat parts are not compatible. If you have a dual fuel system or a whole-home humidifier/dehumidifier, it is strongly recommended that you choose professional installation.

The Nest app’s step-by-step instructions make it easy to install and wire your thermostat, so use it as your main guide. Refer to this article if you need extra help. Nest Thermostat works with most 24 V heating and cooling systems, including furnaces, air conditioners, boilers and heat pumps with either forced-air or radiant delivery. If you have a dual fuel system it is strongly recommended that you chooseprofessional installation. The displays and bases of various thermostat models are not interchangeable, even though they may look similar. Your home is your space. It’s also a place where you can express your style with color and personal touches. And we want our products to reflect your aesthetic while giving you the help you need. So we recently introduced three new colors to the Nest Learning Thermostat lineup (bringing the total to seven) to give you more options to fit your style.

Install your thermostat on the wall

Heating and Cooling: one stage of heating (W1) and cooling (Y1) and a second stage of either heating (W2)or cooling (Y2). The app will show you how to install your thermostat. It will ask you some questions about your thermostat wires. Answer them as accurately as possible.

Note:3rd-gen Nest Learning Thermostats come in several colours. All 3rd-gen display colours will work with any 3rd-gen base.Some systems, including heating-only, cooling-only, zone-controlled, and heat pump systems, require a C wire or the Nest Power Connector. Go to g.co/nest/cwire for details. The Learning Thermostat comes with a trim plate included in the box. This is often needed if the Nest is smaller than the thermostat it is replacing and is used to hide the hole left by the old device. Nest’s marketing images usually show the thermostat neatly mounted directly to the wall, but in most cases, you’ll have to use the trim kit to hide the mess created by the removal of the old thermostat. WARNING:Any attempt to connect low- and high-voltage Nest parts may damage them as well as your system. Do not mix and match these bases and displays, even if the thermostats are the same model and generation.

WARNING: If you attempt to connect parts from different thermostat models, it may damage your thermostat as well as your system. Nest claims both thermostats can save an average of 10 to 12 percent on heating bills and 15 percent on cooling bills. Naturally, this will depend on your home, typical usage, and the HVAC system you have. As long as the thermostat base is from the same model, generation, and country/region as the thermostat display, you can swap bases and displays. Both thermostats are the same size, with a 3.3-inch diameter, but they look quite different. The Learning Thermostat has a high-resolution digital display for showing the temperature, status of your heating, and the menu system, which is navigated by rotating and pressing a metal ring that runs around the entire circumference. Meanwhile, the cheaper Nest Thermostat is made from plastic and has what Nest calls a mirror display, which is reflective when off and white when on.

Some countries (such as the UK, France, and The Netherlands) use high voltage wiring for thermostats while others (such as the US and Canada) use low voltage wiring. High voltage and low voltage thermostat parts are not compatible with each other, and should not be used together.

They can program themselves to create a personalized schedule and turn down automatically to save energy when you’re away. You can control your thermostat from a phone, tablet, Google Home Hub or even an Android Watch or Apple Watch with the Nest or Google Home app. And, you can use your smart speaker or display to change the temperature with your voice—just say, “Hey Google, set the temperature to 68.” Because of different hardware designs, the displays and bases of various Nest thermostat models are not interchangeable even though they may look similar. The display connector and system wire connectors vary from model to model. Please see the first two sections in this article for more details. You might not instantly see an equivalent saving in your heating and cooling bills to offset the extra expense of the Learning Thermostat and sensors, but its additional features – especially its intelligent temperature adjustments – can make a difference to your bills over time. Using less energy can also make a difference to the environmental impact of your home, depending on the energy source used.

Note:Only one of the wires that go into theconnector (HUM,DEHUM,E,W 3) can be connected to the Nest Learning Thermostat.