![]() (This is where you'll need to consult your thermostat, relay and transformer manufacturers.) You also need to check and make sure your transformer and relay work with your heater's voltage. ![]() You'll also need to get a properly sized transformer to power your relay and thermostat. (Keep in mind that you'll need one smart thermostat for each older thermostat you are replacing.) You'll want to ensure that you have a properly sized relay to provide power to your heater. The thermostat detects the temperature of the room and regulates it by controlling the current passing to the heater. The relay is then a bridge between the thermostat and the heater, allowing the low voltage thermostat to control the line voltage heater. A baseboard heater thermostat is a variable switch installed in the electric circuit running to the baseboard heater. The transformer converts the line voltage power into low voltage power to provide energy to the relay and the thermostat. But that's where relays and transformers come in. If you hooked up a low-voltage thermostat directly to one of our heaters, it would fry the thermostat. Electric baseboard and fan heaters work with line-voltage thermostats, which can be either 120 or 240 volts. Those are controlled by low voltage thermostats, which use 24 volts. You can also check for a voltage listing inside the cover of the thermostat, or on the heat pump, furnace (inside the access door), boiler, or the electrical baseboard unit itself.The Honeywell, Lyric, Nest and other smart thermostats are designed to work with central home heating systems. CR's take: The Google Nest Learning Thermostat is Wiring adapter included: No sold separately for 25 at Amazon, Best Buy, and Google. By contrast, wires for low-voltage thermostats are very thin, similar to wiring for doorbells or telephone jacks. The wire leads will be quite thick, 12-gauge or 14-gauge wires, like those connected to a wall outlet or light switch. One way to know if you have a line-voltage thermostat is to look at the wires. As a result, expect wider temperature fluctuations in any heating system controlled by these thermostats. These thermostats are not as sensitive as most low-voltage types, and it may take a temperature fluctuation up to 7 degrees Fahrenheit to make them respond. They are primarily used for electric resistance heating systems, such as electric baseboard heaters and in-wall heaters. Line-voltage thermostats are powered directly by a standard 120-volt or 240-volt circuit-the same circuit that powers a permanent electric heater. Electric central air conditioning systems Smart Thermostat for Electric Baseboard and in-Wall Heaters V2 Connects with Smart Devices, Control Remotely, Pairs with WiFi or NFC, Easy Connection & Setup, Energy Saving 756 12595 FREE delivery Mon, Jun 12 Or fastest delivery Fri, Jun 9 Works with Alexa More Buying Choices 118.Although they are bigger than typical thermostates, they look sleek and clean on the wall. Gas-fired, oil-fired, and electric hot water boilers for radiant heat or baseboard hydronic systems Order the Markel K3455SD Heavy-Duty Fan Forced Wall Heater, Integral Smart Thermostat, 5 KW, 240V/3Ph at . Installation from an electrician friend was quick and easy.Single-stage and multi-stage heat pumps.Conventional gas forced-air furnaces, including standing pilot and electronic ignition types.Number of thermostat wires: two or three in systems without air conditioning four or five with air conditioning can have seven or more wires with heat pump systems.Low-voltage thermostats include digital/programmable, mercury bimetallic, and mechanical contact types. The transformer that steps down the house voltage to low voltage is usually mounted on or near the furnace. Some types may use voltages as low as 6 volts or as high as 30 volts, but 24 volts is the most common type. ![]() A low-voltage thermostat typically runs on 24 volts of electricity and is powered by a step-down transformer wired to a standard 120-volt household circuit. Low-voltage thermostats are the most common and versatile type of thermostats found in homes.
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