Radiant floors feel best when temperature control is precise, reliable, and easy to adjust. The right thermostat can improve comfort while helping prevent overheating, wasted energy, and uneven floor temperatures.
We’ve gathered 10 options ranging from Wi-Fi-connected touchscreen models to straightforward programmable and non-programmable controls. Use the guide below to match features, wiring, and sensing options to your heating system.
Best 10 Smart Thermostat for Radiant Floor Heating Picks for 2026
Best Smart Wi-Fi Pick
- 4.3-inch Wi-Fi touchscreen
- SmartStart and 7-day scheduling
- Floor/air sensing with floor limits
Best For: Remote control and advanced electric floor-heating management
Best Safety-Focused Pick
- Class A GFCI protection
- 120V/240V dual-voltage support
- Includes floor sensor and dual sensing
Best For: Safety-conscious electric radiant-floor installations
Best Premium Display
- 4.3-inch touchscreen interface
- SmartStart and 7-day programming
- Wi-Fi control through Watts Home app
Best For: 240V systems needing a polished, connected thermostat
Best Value Smart Control
- Smart Life app control
- Alexa and Google Assistant support
- Includes 15-foot floor sensor
Best For: Simple app and voice control for compatible underfloor systems
Best Smart Upgrade
Nuheat Signature WiFi Thermostat
- App and web-browser control
- 7-day scheduling and voice integration
- 120/240V support with built-in GFCI
Best For: Connected electric radiant-floor systems
Best Value Control
VEVOR 7-Day Radiant Heating Thermostat
- 7-day programmable scheduling
- 120/240V radiant-heating compatibility
- Backlit LCD with included temperature probe
Best For: Simple wired floor-heating control
Best Sensor Flexibility
Honeywell TH115 Radiant Thermostat
- 7-day programmable operation
- Ambient and floor-sensing modes
- 120/240V support with GFCI
Best For: Radiant floors needing selectable sensor control
Best with Extra Features
- Wi-Fi app control with energy-use logging
- Dual air-and-floor sensing with GFCI
- 7-day scheduling and adaptive operation
Best For: Connected control of compatible electric radiant floor systems
Best Value
Programmable Underfloor Heating Thermostat
- Works with 120V and 240V systems
- Dual sensing and built-in Class A GFCI
- 7-day scheduling with backlit LCD
Best For: Scheduled electric underfloor heating on a practical budget
Best Simple Control
Non-Programmable Radiant Floor Thermostat
- Simple manual temperature adjustment
- Supports 120V, 208V, and 240V systems
- Three sensing and floor-protection modes
Best For: Straightforward control without scheduling or setup complexity
Best Smart Wi-Fi Pick – SunStat ConnectPlus
For shoppers seeking a smart thermostat for radiant floor heating, the SunTouch SunStat ConnectPlus combines remote Wi-Fi control with detailed floor-heating features. Its 4.3-inch touchscreen, SmartStart scheduling, and floor-protection settings make it a feature-rich choice for electric systems.
Best For: Homeowners who want app control, voice compatibility, and extensive scheduling options.
Pros:
- Remote control through the Watts Home app, with Alexa and Google Assistant compatibility.
- SmartStart and 7-day programming help have the floor warm at scheduled times.
- Supports floor and air sensing, floor temperature limits, energy monitoring, and alerts.
- Large 4.3-inch touchscreen supports portrait or landscape orientation.
Cons:
- Designed for electric floor-heating systems, so system compatibility should be verified before purchase.
- Its many settings may be more than needed for a basic installation.
The ConnectPlus stands out when convenience and monitoring matter as much as temperature control. It is particularly appealing for users who want to manage radiant heating remotely and protect sensitive flooring with configurable limits.
Best Safety-Focused Pick – OJ Microline UDG4
The OJ Microline UDG4 is a practical smart thermostat for radiant floor heating when safety, dual-voltage support, and precise programming are priorities. It includes Class A GFCI protection, dual sensing, a floor sensor, and compatibility with 120V and 240V electric systems.
Best For: Electric radiant-floor installations needing GFCI protection, floor sensing, and detailed scheduling.
Pros:
- Class A GFCI helps support safer electric floor-heating installations.
- Works with 120V and 240V systems and includes a floor sensor.
- Offers 7-day programming, adaptive operation, vacation mode, and open-window mode.
- Floor limits support tile, marble, carpet, concrete, laminate, and wood applications.
Cons:
- Its 3.5-inch screen is smaller than the displays on the SunTouch models listed here.
- Load capacity is specified at 15 amps, so larger systems may require a secondary relay.
With its built-in GFCI, dual sensing, and included sensor, the UDG4 is a strong fit for safety-conscious installations. Its adaptive programming and power logging also give users more control over comfort and operating costs.
Best Premium Display – SunStat CommandPlus
The SunTouch SunStat CommandPlus is a smart thermostat for radiant floor heating that emphasizes a modern touchscreen and convenient remote access. It pairs a 4.3-inch display with SmartStart, floor and air sensing, scheduling, and Watts Home app control for electric floor-heating systems.
Best For: Users who want a large, modern touchscreen and app-based control for a 240V electric system.
Pros:
- 4.3-inch capacitive touchscreen has a sleek profile and portrait display.
- SmartStart adjusts operation so the floor is warm at the programmed time.
- Provides 7-day scheduling, away mode, energy monitoring, and floor maximum settings.
- Supports remote access through the Watts Home app.
Cons:
- The supplied specifications identify this model as a 240V thermostat, limiting system compatibility.
- Voice-assistant support is not specifically listed in the supplied details.
The CommandPlus is a polished option for installations where display quality and remote management are important. Confirm the voltage and electric-system requirements before choosing it for a particular radiant-floor setup.
Best Value Smart Control – MAXKOSKO WiFi Thermostat
The MAXKOSKO WiFi thermostat offers an accessible way to manage a smart thermostat for radiant floor heating. It combines smartphone control, programmable settings, Alexa and Google Assistant support, and an included 15-foot floor sensor in a straightforward wall-mounted design.
Best For: Homeowners seeking app, voice, and touchscreen control with a long included floor sensor.
Pros:
- Controls floor heating remotely through the Smart Life app.
- Works with Alexa and Google Assistant for voice-activated adjustments.
- Includes a 15-foot floor sensor for continuous temperature monitoring.
- Programmable settings and energy-use insights support more efficient operation.
Cons:
- The supplied notes do not specify supported voltage or maximum load.
- Compatibility is described broadly, so the existing underfloor system should be confirmed before installation.
This MAXKOSKO model is appealing for users who want connected controls without a heavily featured interface. Its strongest practical advantages are Smart Life integration, voice control, and the included long sensor cable; verify electrical specifications before buying.
Best Smart Upgrade – Nuheat Signature WiFi Thermostat
The Nuheat nVent Signature is a strong smart thermostat for radiant floor heating when app control, scheduling, and smart-home integration matter. Its Wi-Fi connection, color touchscreen, and dual-voltage support make it suitable for many electric floor-heating installations.
Best For: Homeowners who want smartphone, web-browser, voice, and smart-home control for electric radiant floor heating.
Pros:
- Supports iOS and Android app control plus web-browser access.
- Works with Amazon Alexa, Google Assistant, IFTTT, and several professional smart-home systems.
- Offers 7-day scheduling and a 3½-inch color touchscreen.
- Supports 120V and 240V floor-heating cables with built-in Class A GFCI protection.
Cons:
- Wi-Fi and smart-home features may be unnecessary for buyers seeking a basic wired thermostat.
- Designed for floor heating rather than general HVAC applications.
Choose this model for a connected radiant-floor setup with flexible scheduling and broad ecosystem compatibility. Verify voltage and installation requirements before purchase.
Best Value Control – VEVOR 7-Day Radiant Heating Thermostat
The VEVOR 7-Day Programmable Thermostat is a practical smart thermostat for radiant floor heating when you want scheduled temperature control without relying on Wi-Fi app features. It supports 120V/240V systems, uses floor or indoor sensing, and provides a backlit display for easy reading.
Best For: Budget-focused installations needing wired 7-day programming for radiant underfloor heating or compatible heat-pump applications.
Pros:
- Provides flexible 7-day temperature scheduling to help reduce manual adjustments.
- Supports 120V and 240V systems, including underfloor heating and snow-melting applications.
- Includes a temperature probe and built-in sensitive temperature sensor.
- Backlit LCD and quick-response buttons are useful in dim lighting.
Cons:
- Uses wired push-button control rather than Wi-Fi or mobile-app operation.
- Its broader system compatibility means installation details should be checked carefully.
This is a straightforward choice for scheduled, sensor-based control. Its wired design and included probe may appeal to buyers who prefer a simpler installation than a connected smart thermostat.
Best Sensor Flexibility – Honeywell TH115 Radiant Thermostat
Honeywell TH115-AF-GA/U Radiant Heating 120/240V Programmable Thermostat with Floor Sensor and GFCI
Check Price On AmazonThe Honeywell TH115-AF-GA/U is a dependable smart thermostat for radiant floor heating when floor-sensor control and programmable operation are priorities. It supports 120V/240V electric radiant heating and lets you choose ambient, floor, or ambient-with-floor-limit temperature control.
Best For: Electric radiant-floor installations where selectable sensing modes and built-in GFCI protection are important.
Pros:
- Offers 7-day programmable temperature control.
- Provides ambient, floor, or ambient-with-floor-limit control choices.
- Includes a floor sensor and GFCI protection.
- Supports 120V/240V radiant heating applications.
Cons:
- Uses button control and a smaller digital display.
- The supplied details list no manufacturer warranty.
- Its connectivity details are less clearly defined than the Nuheat model’s Wi-Fi features.
Consider this Honeywell when temperature-sensing flexibility matters more than a large touchscreen. Confirm the wiring, voltage, and sensor requirements for your specific floor-heating system.
Best with Extra Features – WiFi Radiant Floor Thermostat
For shoppers seeking a smart thermostat for radiant floor heating, the OJ Microline UWG4-4999 combines Wi-Fi control with programmable scheduling and dual temperature sensing. Its touchscreen interface, included floor sensor, and built-in GFCI make it a feature-rich option for compatible electric systems.
Best For: Homeowners who want app-based control, energy-use reports, and flexible scheduling for 120V or 240V electric radiant floor heating.
Pros:
- Wi-Fi remote control and monitoring through Android or iOS devices
- Dual air-and-floor sensing with floor limiting for wood and laminate
- 7-day programming, adaptive operation, vacation mode, and open-window mode
- 3.5-inch color touchscreen and built-in Class A GFCI
Cons:
- Designed for electric radiant systems rather than hydronic heating
- Installation and electrical compatibility should be confirmed before purchase
Choose this model if connected controls and detailed monitoring matter more than having a basic wall thermostat. Its 15-amp capacity supports up to 1,800 watts at 120V or 3,600 watts at 240V.
Best Value – Programmable Underfloor Heating Thermostat
This programmable thermostat is a practical smart thermostat for radiant floor heating when you need automatic scheduling and safety monitoring without relying on wireless controls. It supports 120V and 240V electric systems, includes air and floor sensors, and has a built-in Class A GFCI.
Best For: Budget-conscious buyers who want scheduled electric underfloor heating with dual sensing and a large backlit display.
Pros:
- Supports 120V or 240V operation up to 15 amps
- Dual air-and-floor sensing with floor sensor included
- 7-day programming and an on/standby switch for seasonal shutdown
- Self-testing Class A GFCI and five-year limited warranty
Cons:
- Wired control with push-button operation rather than app-based Wi-Fi control
- GFCI alerts and installation require careful setup and testing
Its large LCD and straightforward controls suit rooms where reliable scheduling is more important than a touchscreen interface. Verify the existing system’s voltage, load, and wiring before installation.
Best Simple Control – Non-Programmable Radiant Floor Thermostat
If you want a smart thermostat for radiant floor heating without programming complexity, the OJ Microline UTN4-4999 offers straightforward digital temperature control. It supports common electric floor-heating voltages, includes air and floor sensing, and adds built-in Class A GFCI protection.
Best For: Users who prefer simple manual temperature adjustment for compatible electric radiant floor systems.
Pros:
- Non-programmable design requires minimal setup
- Supports 120V, 208V, and 240V electric floor-heating circuits
- Three control modes for ambient temperature, floor temperature, and floor protection
- Includes a 10K-ohm floor sensor and three-year limited warranty
Cons:
- No built-in scheduling or programmable temperature changes
- Not intended for shoppers seeking automated Wi-Fi control
This is a good fit for a dedicated room where you want dependable manual control and floor-temperature protection. Its 15-amp rating supports up to 1,800 watts at 120V or 3,600 watts at 240V.
How We Picked the Best Smart Thermostat for Radiant Floor Heating
We focused on thermostats designed for electric radiant floor systems, including models compatible with common 120V and 240V installations. Our comparison emphasizes practical features: Wi-Fi access, scheduling, floor and air sensing, dual-voltage support, built-in Class A GFCI protection, screen usability, and compatibility with floor-heating cable or mats.
Because installation requirements vary, product listings and manufacturer documentation should be checked before purchase. Electrical work involving line-voltage wiring should be completed by a qualified professional.
Quick Comparison
| What to Compare | Best For |
|---|---|
| Wi-Fi control | Remote adjustments, app scheduling, and connected-home convenience |
| Floor sensing | Protecting flooring and maintaining consistent surface temperatures |
| Dual voltage | Installations that may use either 120V or 240V circuits |
| Built-in GFCI | Added electrical protection for compatible bathroom and wet-area installations |
| Programmable schedules | Automatically reducing heat during sleep or away periods |
Key Buying Factors for a Smart Thermostat for Radiant Floor Heating
Confirm Voltage and Load Compatibility
Start by identifying whether your heating system runs at 120V or 240V and check its total electrical load. A thermostat must support the circuit voltage and wattage; a visually compatible wall control is not necessarily electrically compatible.
Choose the Right Sensing Method
Floor sensors help regulate the actual floor temperature and can be especially important beneath tile, wood, or other sensitive finishes. Dual-sensing models can combine floor and room readings, while some systems are configured primarily around the embedded floor probe. Confirm that the included or existing sensor matches the thermostat.
Look for Useful Control Features
Wi-Fi is valuable if you want to change settings remotely, create schedules in an app, or integrate heating with a connected home. If you mainly need dependable local control, a touchscreen or programmable thermostat may offer the best value without requiring an account or network connection.
Check Safety and Installation Details
A built-in Class A GFCI can simplify protection requirements, but it does not eliminate the need to follow local electrical codes. Verify box depth, wiring requirements, sensor placement, maximum load, and whether the thermostat is approved for your installation location.
Who Should Buy Which Smart Thermostat for Radiant Floor Heating?
Choose a Wi-Fi model if remote access and automated schedules are priorities. Pick a dual-sensing thermostat when accurate floor protection and room comfort both matter. A programmable model is a practical middle ground for predictable daily routines, while a non-programmable control suits simple systems used on a steady schedule.
For bathrooms, kitchens, entryways, or other moisture-prone areas, prioritize compatible GFCI protection and professional installation. If you are replacing an existing control, photograph the wiring and record the old thermostat’s voltage and sensor arrangement before selecting a replacement.