With our line voltage thermostat ratings, you can compare all of the brands of line voltage thermostats side by side using our Head To Head tool.
You can compare 32 models from 20 brands in 6 categories such as availability, warranty, control types, cost, & their programmability.
You can also read the individual reviews of each brand below.
Our simple rating system gives each brand a color code and a star rating. If the card is green, then, that is one of the top picks from HvacRepairGuy. If the card is yellow, then, that would be a budget pick from HvacRepairGuy. If the card is red, then, the brand is not recommended by HvacRepairGuy.
This brand is a subsidiary of Honeywell International and the thermostats can be purchased on Amazon. The TH115-A-120S models are four wire single pole thermostats for use in 120 volt applications. They have seven day programmability with settings for four periods per day and have a on/standby switch to conveniently turn the unit off when the heating season is over. They have an on screen indicator when power is being used as well as an early start function so that the temperature is at the setpoint at the start of the designated control period as well as a temporary bypass function to temporarily change the setpoint without changing the program. The brand is backed by a pretty good guarantee.
This brand is made in China for sale on Amazon. The GM4 model has seven day programmability and is designed for underfloor radiant heating systems. They have dual sensing where they monitor both the air and the floor temperatures for enhanced comfort. They have built-in GFCI protection for safety and the brand is backed by a very good guarantee.
This brand is a part of Glen Dimplex and can be purchased on Amazon. The T522 model is a basic double pole mechanical control that can be used for both 120 volt and 240 volt applications while the TEN Series models are digital controls but they are not programmable. The TEP Series thermostats are programmable single pole units with seven day programmability with four periods per day. The brand is backed by a pretty good guarantee.
This brand is made in China and can be purchased on Amazon. The TS321W model is a mechanical single pole control that can be used for both 120 volt and 240 volt applications while the TD322W model is a double pole control. The brand does not offer digital controls in the USA and their guarantee is not very good when compared to other brands.
The TL8230A1003 model is a two pole thermostat for use in 208/240 volt applications and they can be purchased from their Amazon store. They have seven day programmability with settings for four periods per day and have a on/standby switch to conveniently turn the unit off when the heating season is over. They have an on screen indicator when power is being used as well as an early start function so that the temperature is at the setpoint at the start of the designated control period as well as a temporary bypass function to temporarily change the setpoint without changing the program. The units are relatively inexpensive and yet they are backed by a pretty good guarantee.
The AC603H model thermostat is a Wi-Fi enabled control that can be used on 120 or 240 volt electric baseboard heating systems. The units work with the Alexa, Google, Smart Life, & Tuya apps. The units are rather inexpensive but they have had problems with their temperature reading accuracy and their connectivity. They can be purchased through their Amazon store.
This brand can be purchased from their Amazon store but their guarantee is not as good as some of the other brands. The SIMPLSTAT K702E-2 model has three pre-programmed periods so that no complicated programming is needed yet they give you the comfort and efficiency of a programmable thermostat. The ClearTouch K302PE model has seven day programmability and can be used with both 120 and 240 volt heating systems. The HOOT WIFI models can be easily controlled through their smartphone app and allows for control of multiple thermostats for zoning purposes. The brand is relatively expensive compared to other brands.
This brand offers programmable thermostats that are used with their radiant floor heating systems. They can be used with either 120 or 240 volt systems and feature built-in GFCI protection for safety as well as touchscreen controls. The Strata Heat model is a basic programmable model while the Strata Heat WiFi model can be controlled with voice commands from Google or Alexa. They feature easy setup through a QR code and use smartphone GPS to change from home to away modes and back. The guarantee on the brand is not as good as some of the other brands.
This brand is made in China and can be purchased through their Amazon store. The ELV4 is a programmable electronic control for 120 volt heating systems. They have separate programs for weekdays and the weekend with four control periods for each day. The units are inexpensive but they have a rather small display that is hard to read and their guarantee is not as good as some of the other brands.
The Mapeheat Thermo Connect WIFI thermostat is designed to work with their floor heating systems and it features both floor and air temperature sensors for enhanced comfort. The thermostat is Wi-Fi enabled for control though smartphone app and it works with voice commands from Alexa and Google Assistant. It has seven day programmability and can be used with both 120 and 240 volt heating systems. The app also provides weather forecast information as well as energy use data. The thermostat has built in GFCI circuit protection for safety and they are backed by a pretty good guarantee. The units can be purchased through their Amazon store.
This brand is from TPI CORP. and offers very basic mechanical thermostats. They offer both cooling only and heating only thermostats but they are not very accurate.
This brand is made in China. The MTS200 thermostat is designed to work with many floor heating systems and it is Wi-Fi enabled for control though smartphone app as well as integrating with Apple Home, Alexa, Google Home, & SmartThings smart home control systems. It has seven day programmability and can be used with both 120 and 240 volt heating systems. The thermostat has energy use monitoring as well as an open window detection function to shut the heat off when you open a window for ventilation. The units can be purchased through their Amazon store but their guarantee is not as good as some of the other brands.
This brand is made in China and the thermostats are Wi-Fi enabled for control through smartphone app as well as integrating with Apple Home, Alexa, & Google Home smart home control systems. The Smart Lite Baseboard thermostat has seven day programmability while the Smart Baseboard model also includes humidity sensing and provides temperature and humidity alerts. The Smart In-floor model works with floor temperature sensors and 240 volt floor heating systems. It has built-in GFCI protection for enhanced safety. The units can be purchased through their Amazon store and they are backed by a pretty good warranty.
These thermostats are Wi-Fi enabled for control through smartphone app as well as integrating with Alexa & Google Home smart home control systems. The Signature thermostats have seven day programmability and can be used on either 120 or 240 volt floor heating systems. They feature real time weather and energy use monitoring and they are backed by a very good guarantee. The units can be purchased through their Amazon store.
These thermostats are made in Denmark and are designed for 120 or 240 volt floor heating systems. They use both air and floor temperature sensors for enhanced comfort and have built-in GFCI protection for enhanced safety. They have an adaptive control function that ensures the temperature is at the programmed setpoint at the start of the program period and they have an open window function so that, if there is a rapid drop in room temperature, the thermostat is shut off for 30 minutes. The UDG4 model has a touch screen while the UWG4 model is Wi-Fi enabled for control through smartphone app or with voice commands from Google or Alexa. The UWG5 models feature a modern LED display and Wi-Fi connectivity. The UDG4 units can be purchased on Amazon.
This brand is from Marley Engineered Products and can be purchased on Amazon. The M602W is a basic mechanical control that is not very accurate. They are inexpensive to buy but will waste energy and cause elevated electric utility bills compared to modern digital programmable controls.
This brand offers very basic mechanical thermostats which are very inaccurate. They are inexpensive to buy but will waste energy and cause elevated electric utility bills compared to modern digital programmable controls.
This brand is made in Canada and they offer seven day programmable thermostats that are backed by a very good warranty. The STCP model is used on floor heating systems and features both air and floor temperature sensors for enhanced comfort while the ST402P model is used on electric baseboard heaters and convectors.
This brand is a part of Watts Water Technologies and the units are for use with their radiant floor heating systems. The Command model is a basic seven day programmable thermostat while the ConnectPlus model is Wi-Fi enabled for control through a smartphone app or with voice commands from Google or Alexa. All of the thermostats have built in GFCI for safety and touchscreen controls with a thin profile to blend into the modern home decor and they are backed by a pretty good guarantee. They use both floor and air temperature sensors for enhanced comfort and they can be purchased directly through their Amazon store.
This brand is a part of Copeland LP and the thermostats are made in China. The 1E65-144 is a digital non-programmable thermostat that can be used with either 120 or 240 volt electric heating systems. They are inexpensive but seem to have problems with accuracy which can waste energy and money on electric bills.
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