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Nest Thermostat E works with 85% of 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal. Nest Thermostat E can replace your 4-wire thermostat if your system is Nest-compatible. You can take a look at this article to determine if yoursystem is compatible with Nest Thermostat E : https://support.google.com/googlenest/answer/9246656 If you need further assistance, you can reach out to us here: https://support.google.com/googlenest/contactflow
Sorry, there was a problem. Please try again later.Yes, mine is a 4 wire and my son and I installed the Nest in about 15 minutes time. That said, if you have any concerns, pay a little extra for the professional install. You don't want to take chances when it comes to your wiring
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