Electric heated floors can’t use a regular wall thermostat. They need a floor heating thermostat: a line-voltage control that switches the 120V or 240V heating mat directly, reads a sensor buried in the floor, and has built-in ground fault (GFCI) protection. The best option for most homes is the Mysa Smart Thermostat for In-Floor Heating, because it costs less than the other options and it’s the only one in this guide that works natively with Apple Home, Alexa and Google Home.
All five thermostats below are for electric mats and cables under tile, stone, vinyl or engineered wood. If your floor is heated by hot water tubing from a boiler, the controls are different, and we explain what to use in the buying guide. For thermostats that control a furnace or heat pump, see our guide to the best smart thermostats.
Quick Recommendations
- Mysa Smart Thermostat for In-Floor Heating — Best overall. Works with Apple Home, Alexa and Google Home, supports 208V, and has a 5-year warranty.
- Warmup 7iE — Best for Matter. A large color touchscreen and Matter support for Apple Home, Google Home and Alexa.
- SunTouch SunStat ConnectPlus — Best touchscreen. A 4.3-inch screen, weather-based features and the most detailed diagnostics.
- Nuheat Signature — Best for home automation. Works with Alexa and Google, plus Control4, Crestron and IFTTT.
- QuietWarmth THERMAEGH — Best value touchscreen. A 4-inch touchscreen with Alexa and Google support at a lower price.
Top Choices at a Glance
| Product | Ecosystem | Key Feature | Approx. Price | Best For |
|---|---|---|---|---|
| Mysa Smart Thermostat for In-Floor Heating | Apple Home, Alexa, Google Home | 16 A, 120/208/240V | ~$199 | Best overall |
| Warmup 7iE | Matter (Apple Home, Alexa, Google Home) | Color touchscreen, SmartGeo | ~$284 | Matter |
| SunTouch SunStat ConnectPlus | Alexa, Google Home | 4.3-inch touchscreen, weather compensation | ~$293 | Touchscreen |
| Nuheat Signature | Alexa, Google Home, IFTTT | Control4 and Crestron support | ~$281 | Home automation |
| QuietWarmth THERMAEGH | Alexa, Google Home | 4-inch touchscreen | ~$212 | Value touchscreen |
Compatibility Matrix
| Product | HomeKit | Alexa | Google Home | Matter | Hub Required | Wiring/Power |
|---|---|---|---|---|---|---|
| Mysa Smart Thermostat for In-Floor Heating | Yes | Yes | Yes | No | No | 120/208/240V, up to 16 A |
| Warmup 7iE | Via Matter | Via Matter | Via Matter | Yes | No | 120/240V, up to 15 A |
| SunTouch SunStat ConnectPlus | No | Yes | Yes | No | No | 120/240V, up to 15 A |
| Nuheat Signature | No | Yes | Yes | No | No | 120/240V, up to 15 A |
| QuietWarmth THERMAEGH | No | Yes | Yes | No | No | 120/240V, up to 15 A, 20 A dedicated circuit |
Only the Mysa and the Warmup work with Apple Home: the Mysa directly, and the Warmup through Matter. All five have a built-in Class A GFCI and come with a floor sensor, so you don’t need to buy either separately.
The Best Floor Heating Thermostats for 2026
Mysa Smart Thermostat for In-Floor Heating — Best Overall
The Mysa is the best heated floor thermostat for most homes. It’s cheaper than the other smart options, it handles a bit more load, and it’s the only one with native support for Apple Home, Alexa and Google Home.
Best for: Bathrooms and kitchens with electric floor heating, especially in homes that use Apple Home.
What stands out in real use
You can choose between two modes in the Mysa app. Floor mode keeps the floor at the temperature you set, and Ambient mode heats to a room temperature. When you select your floor type, the app also limits the floor temperature to the maximum the flooring manufacturer recommends. The app has schedules, geofencing, energy reports and alerts if the temperature goes too high or too low. The thermostat itself has touch buttons and adjustable brightness, and Mysa sells it with a 5-year warranty. It also works with the sensor already in your floor in many cases: it accepts floor sensors from 5 to 40 kΩ.
Key specs
- 120V, 208V or 240V single-phase electric floor heating
- Up to 16 A: 1,900 W at 120V, 3,800 W at 240V
- Built-in Class A GFCI (5 mA)
- 10 kΩ floor sensor with a 16 ft cable included
- 2.4 GHz Wi-Fi and Bluetooth
- Apple Home, Alexa, Google Home
Pros
- Native Apple Home support, plus Alexa and Google Home
- The lowest price in this guide
- The only option that also supports 208V
- 5-year warranty
Cons
- Doesn’t work with hydronic (hot water) floor heating
- Doesn’t have a touchscreen, only touch buttons
- It doesn’t support Matter
Installation and compatibility notes
The Mysa replaces an existing floor heating thermostat in a standard single-gang box. Mysa says it must be the only GFCI device on the circuit, and the thermostat won’t run without a floor sensor connected. On 240V or a double-pole breaker, Mysa says you should hire a licensed electrician. For more Apple Home options for other heating systems, see our guide to the best HomeKit thermostats.
Price: ~$199
Warmup 7iE — Best for Matter
The 7iE is Warmup’s newest Wi-Fi thermostat and the floor heating thermostat with the widest smart home support in this guide. It’s Matter certified, so you can add it to Apple Home, Google Home or Alexa with one setup code.
Best for: Homes with several smart home platforms, and anyone installing a Warmup heating mat.
What stands out in real use
The full-color touchscreen sits only 16 mm from the wall, and you can use your own photo as the background. In Warmup’s MyHeating app, SmartGeo uses your phone’s location to lower the temperature when you’re away and heat the floor again before you come home. Weather-based Early Start turns the heat on earlier on cold days, so the floor is warm at the time you scheduled. You also get open window detection and energy use reports. If you install it with a Warmup heating mat, Warmup gives a 12-year warranty and remote support through its Smartcare service.
Key specs
- 120V or 240V electric floor heating
- Up to 15 A: 1,800 W at 120V, 3,600 W at 240V
- Built-in Class A GFCI (5 mA)
- Floor and air sensing, 10 ft floor sensor included
- Matter certified (Wi-Fi), MyHeating app
- Color touchscreen with custom photo backgrounds
Pros
- Works with Apple Home, Google Home and Alexa through Matter
- Large, thin color touchscreen
- SmartGeo and weather-based Early Start
- 12-year warranty with Warmup heating mats
Cons
- More expensive than the Mysa
- SmartGeo and the energy reports are only in the MyHeating app
- The longest warranty only applies with Warmup’s own mats
Installation and compatibility notes
The North American 7iE works with electric floor heating and electric baseboard heaters on 120V or 240V. Older Warmup thermostats like the 6iE don’t support Matter, so if you’re replacing one, the 7iE is the upgrade that adds it. To compare it with Matter thermostats for furnaces and heat pumps, see our guide to the best Matter thermostats.
Price: ~$284
SunTouch SunStat ConnectPlus — Best Touchscreen
The ConnectPlus has the most complete set of features of the thermostats here. It’s a good choice if you’ll use the screen on the wall as much as the app.
Best for: Large bathrooms and kitchens where you want detailed control and energy data on the wall.
What stands out in real use
The 4.3-inch touchscreen shows the floor temperature, the weather or the time on its home screen, and you can mount it horizontally or vertically. Weather compensation adjusts the heat based on the outdoor temperature, and warm-weather shutdown turns the floor off when it’s warm outside. You can see your energy use in the Watts Home app and get email or text notifications. For installers, it has a voltage detector, an ammeter and a diagnostic screen. It also connects wirelessly to SunTouch accessories, like a relay module for bigger floors and a smart sensor that reports floor temperature and water leaks.
Key specs
- 120V or 240V electric floor heating
- Up to 15 A
- Built-in GFCI
- 15 ft floor sensor included
- 4.3-inch touchscreen, Wi-Fi, Watts Home app
- Alexa and Google Assistant
Pros
- Large touchscreen with a clear home screen
- Weather compensation and warm-weather shutdown
- Built-in energy monitoring and diagnostics
- Optional wireless relay and leak sensor
Cons
- Doesn’t work with Apple Home
- The most expensive option in this guide
- Accessories cost extra
Installation and compatibility notes
The ConnectPlus controls one zone. For a floor that needs more than 15 A, SunTouch’s wireless R4 relay adds capacity without running a control wire to the thermostat. Voice control goes through the Alexa and Google Home apps.
Price: ~$293
Nuheat Signature — Best for Home Automation
The Signature is Nuheat’s Wi-Fi touchscreen thermostat, and it works with more home automation systems than any other option here.
Best for: Homes with Control4, Crestron or another professional home automation system.
What stands out in real use
The 3.5-inch color touchscreen shows a 7-day schedule, the weather and your energy use. You can control the floor from the Nuheat app, any web browser, Alexa or Google Assistant. It also works with IFTTT and with home automation systems from Control4, Crestron, Elan, RTI and URC. For laminate and engineered wood floors, it has a setting that limits the floor temperature.
Key specs
- 120V or 240V electric floor heating
- Up to 15 A
- Built-in Class A GFCI
- Floor sensor included
- 3.5-inch color touchscreen, Wi-Fi
- Alexa, Google Assistant, IFTTT, Control4, Crestron
Pros
- Widest support for home automation systems
- Color touchscreen with a 7-day schedule
- Energy use monitor and weather updates
- Floor temperature limit for laminate and engineered wood
Cons
- Doesn’t work with Apple Home
- Costs more than the Mysa
- 3-year warranty, shorter than the Mysa’s
Installation and compatibility notes
The Signature controls one zone of electric floor heating up to 15 A. If you have a home automation system, ask your installer which driver it uses before you buy.
Price: ~$281
QuietWarmth THERMAEGH — Best Value Touchscreen
The THERMAEGH gives you a touchscreen and voice control for less than the SunTouch and Nuheat models.
Best for: Anyone who wants a touchscreen on the wall and Alexa or Google control without paying for a premium model.
What stands out in real use
The 4-inch touchscreen and the app let you set a 7-day schedule with Wake, Away, Home and Night periods. You can control the heat by floor temperature, by room temperature, or by room temperature with a floor limit, which is useful for wood or vinyl floors. It works with Alexa and Google Assistant, and you can change the temperature from anywhere through Wi-Fi.
Key specs
- 120V or 240V electric floor heating
- Up to 15 A, on a 20 A dedicated circuit
- Built-in GFCI
- 10 ft floor sensor included
- 4-inch touchscreen, Wi-Fi
- Alexa and Google Assistant
Pros
- Touchscreen and voice control at a lower price
- Three sensing modes, including a floor limit
- Works on 120V or 240V
Cons
- Doesn’t work with Apple Home
- Only up to four time periods per day
- The 10 ft sensor cable is shorter than the others
Installation and compatibility notes
Measure the distance from the heated area to the thermostat box before you buy: the floor sensor cable is 10 ft long. Like the others, it needs a dedicated circuit, and QuietWarmth specifies 20 A.
Price: ~$212
How to Choose a Floor Heating Thermostat
Check if your floor is electric or hydronic. Electric floors use heating mats or cables, and every thermostat in this guide is an electric floor heat thermostat. Hydronic floors use hot water tubing from a boiler, and a radiant heat thermostat for those is a regular low-voltage thermostat that tells the boiler or zone valve to run. The Mysa doesn’t support hydronic systems. For boiler zones with only two wires, see our guide to the best 2-wire thermostats.
Match the voltage and the load. Look at the label on your heating mat or cable: it shows the voltage (120V or 240V) and the amps. One thermostat controls up to 15 A (16 A for the Mysa). A bigger floor needs a power module or relay, and it has to be one made for that thermostat brand.
Use the floor sensor and set a floor limit. An underfloor heating thermostat works best when it controls the floor temperature, not just the air. For wood, laminate and vinyl, set a maximum floor temperature: the National Wood Flooring Association’s radiant heat guidelines limit wood floors to 80°F, and your flooring manufacturer may give its own limit.
Decide on your smart home platform. If you use Apple Home, choose the Mysa or the Warmup 7iE. The other three work with Alexa and Google Home, and the Nuheat also works with professional home automation systems.
Plan for an electrician. These are line-voltage thermostats, and the job means working with 120V or 240V wiring and a GFCI. If you’re not comfortable with that, hire a licensed electrician, and on 240V Mysa says you should. Electric baseboard heaters also use line voltage, but they need a different thermostat: see our guide to the best smart thermostats for baseboard heaters.
Conclusion
For most electric heated floors, the Mysa Smart Thermostat for In-Floor Heating is the best choice: it costs less, supports 208V and works with Apple Home, Alexa and Google Home. If you want Matter or you’re installing a Warmup mat, the Warmup 7iE is the best choice. The SunTouch SunStat ConnectPlus has the most complete touchscreen and energy features, the Nuheat Signature is the best option for home automation systems, and the QuietWarmth THERMAEGH gives you a touchscreen and voice control for less.
What kind of thermostat do I need for heated floors?
Electric heated floors need a line-voltage floor heating thermostat that switches the 120V or 240V mat directly, reads a sensor in the floor and has a built-in Class A GFCI. A regular low-voltage HVAC thermostat can’t control an electric mat. Hydronic floors heated by a boiler use a low-voltage thermostat instead.
Can I use a smart thermostat for floor heating?
Yes, as long as it’s made for floor heating. The Mysa Smart Thermostat for In-Floor Heating, Warmup 7iE, SunTouch SunStat ConnectPlus, Nuheat Signature and QuietWarmth THERMAEGH all connect to Wi-Fi and work with a floor sensor. Smart thermostats for furnaces, like the Nest or ecobee, don’t work with electric floor heating.
Which heated floor thermostat works with Apple HomeKit?
The Mysa Smart Thermostat for In-Floor Heating works with Apple Home directly, and the Warmup 7iE works with Apple Home through Matter. The SunTouch, Nuheat and QuietWarmth thermostats in this guide work with Alexa and Google Home but not with Apple Home.
How many square feet can one floor heating thermostat control?
It depends on the amps, not the square footage. Most floor heating thermostats handle up to 15 A (the Mysa handles 16 A), so check the amps on your mat or cable label. For a bigger floor, add a power module or relay made for your thermostat brand.
What temperature should a heated floor be?
For wood floors, the National Wood Flooring Association’s guidelines limit the floor surface to 80°F, and many flooring manufacturers give their own maximum. Use the floor sensor and set a floor limit in the thermostat, especially for wood, laminate and vinyl.
Written by Evan Mercer
Founder & Lead Researcher, Smart Home Matrix
Evan digs through spec sheets, firmware changelogs, and thousands of owner reviews so you don’t have to. Every guide starts with a compatibility check and ends with picks he would install in his own home. Read more about Evan and this site, or see exactly how we choose products.