Choosing the right thermostat is essential for efficient and comfortable underfloor heating. This guide highlights five top options compatible with electric floor warming systems, balancing features like dual sensing, GFCI protection, app control, and ease of installation. Each product is selected for reliability, energy savings, and broad compatibility across 120V and 240V circuits.
| Product | Brand | Voltage | Key Feature |
|---|---|---|---|
| OJ Microline UTN4-4999 | OJ Electronics | 120/240V | Built-in GFCI; dual sensing |
| SASWELL Programmable Thermostat | SASWELL | 120/240V | 5+2 programming; dual mode |
| 6iE Smart WiFi Thermostat | Warmup | 120/240V | SmartGeo; energy saving |
| MAXKOSKO WiFi Thermostat | MAXKOSKO | 120/240V | Touchscreen; Alexa/Google |
| Mysa Smart Thermostat LITE | Mysa | 120/240V | Wi‑Fi control; no subscription |
Programmable Underfloor Heating Thermostat With Dual Sensing
This BOWSEN device supports 120VAC and 240VAC, handling up to 3600W on 240V and 1800W on 120V. It includes both floor and air sensors and a built-in GFCI with a test function for safety. The thermostat emphasizes circuit protection, helping prevent electric shocks and reducing fire risk by monitoring leakage currents.
Designed for radiant floor systems, it integrates a GFCI inside the unit and provides guidance on testing the GFCI function after installation. The dual sensing capability helps maintain consistent comfort by balancing room air and floor temperature. This model suits homes prioritizing safety and robust protection in electric floor heating setups.
MAXKOSKO WiFi Smart Thermostat For Electric Floor Warming
The MAXKOSKO thermostat offers smart remote control via a smartphone app, enabling temperature adjustments from anywhere. It supports 120V/240V and works with popular voice assistants like Alexa and Google Assistant. Users can create programmable schedules to optimize comfort and energy use, with a focus on universal compatibility with common underfloor heating systems.
Beyond basic scheduling, this model emphasizes energy savings through automated modes and remote monitoring. The touchscreen interface simplifies setup and daily adjustments, making it a strong choice for households seeking convenient, app-driven control without sacrificing compatibility with most radiant floor setups.
OJ Microline UTN4-4999 With Built-In GFCI
This non-programmable thermostat focuses on straightforward operation for radiant floor heating. It includes a built-in Class A GFCI, which is a standard safety feature for underfloor systems. It supports dual voltage (120V/240V) and dual sensing (air and floor), making it compatible with a wide range of installations while offering reliable safety protections for users who prefer a simple control experience.
With a compact, functional interface, the UTN4-4999 is suitable for environments where quick, consistent warmth is desired without extensive programming. It balances safety with ease of use, particularly for retrofits or installations where simplicity is valued over advanced scheduling features.
SASWELL Programmable Thermostat For Electric Floor Heating
The SASWELL thermostat supports 120V and 240V, with a 5+2 programming scheme that tailors heating to weekdays and weekends. It incorporates a dual-mode approach to temperature control, offering Floor Mode, Room Mode, and a Dual Mode for comprehensive warmth management. This flexibility makes it suitable for spaces that require precise floor temperature control alongside overall room comfort.
In addition to scheduling, the device includes a built-in GFCI to protect occupants from electrical faults. The dual sensing capability helps maintain consistent warmth across floors and living spaces, making SASWELL a strong pick for users seeking a balance of programmable control and safety features in radiant floor applications.
6iE Smart WiFi Thermostat For Underfloor Heating
The 6iE from Warmup emphasizes a modern, ultrathin design with a smartphone touchscreen interface. It integrates SmartGeo technology via the MyHeating app to optimize heating based on your location, which helps reduce energy waste and potential savings on energy bills. This model prioritizes hands-free automation while maintaining precise control over heating for underfloor systems.
The touchscreen and app experience are designed to simplify daily use, with automatic adjustments based on proximity to home. If you value a high level of remote control and geo-based efficiency, 6iE provides a technologically advanced option for radiant floor heating control.
Honeywell TH115-AF-GA/U Programmable Thermostat
Honeywell’s TH115-AF-GA/U is a seven-day programmable line-voltage thermostat designed for radiant heating. It emphasizes reliability and brand familiarity, offering standard scheduling capabilities with compatibility for 120V and 240V circuits. The model focuses on robust performance for controlling floor heating systems, combining familiar Honeywell reliability with straightforward programming for consistent warmth.
This option is well-suited for homeowners who prefer a trusted brand and a proven programming interface, balancing ease of use with dependable operation in a wide range of underfloor installations.
OJ Microline UDG4 Touchscreen Thermostat
The UDG4 from OJ Microline blends a responsive touchscreen with dual voltage (120V/240V) and dual sensing (air and floor). It includes a floor sensor and a modern color display, offering a programmable seven-day schedule to manage energy use while maintaining comfort. The built-in GFCI protection further supports safety in radiant floor installations.
Designed to work seamlessly with various floor coverings, the UDG4 is a versatile option for users who want a feature-rich, intuitive control panel that still prioritizes safety and reliability in underfloor heating systems.
Mysa Smart Thermostat LITE For Baseboard Heaters
The Mysa LITE is a line-voltage thermostat designed for 120V/240V electric baseboard heaters and other line-voltage heating appliances. It supports Wi-Fi control, works with Apple HomeKit, Alexa, and Google, and provides a free app with scheduling and energy reports. This option is popular for users who want an affordable, subscription-free platform with broad smart home integration.
While primarily marketed for baseboard heaters, its straightforward installation and app-driven features make it a practical choice for simple underfloor heating configurations where app control and voice assistance are valued.
Buying Guide: Key Purchase Considerations
- Voltage compatibility: Most underfloor heating thermostats in this list support both 120V and 240V. Confirm your circuit voltage before purchasing to ensure correct operation and safety.
- Safety features: Look for built-in GFCI protection, especially for radiant floor systems. This helps prevent electrical shocks and reduces fire risk in wet or damp environments.
- Dual sensing vs. single sensing: Dual sensing thermostats monitor both floor and air temperatures, offering more precise warmth control and protecting flooring materials from overheating.
- Programming vs. non-programmable: If you want automatic schedules, choose 5+2 or 7-day programming. For simple on/off control, non-programmable models are easier and often more affordable.
- Smart features: App control, voice assistant compatibility, and SmartGeo or adaptive learning can boost convenience and potential energy savings, but consider privacy and Wi‑Fi reliability.
- Floor compatibility: Some thermostats are better suited for tile, wood, carpet, or stone floors. Check product notes for floor type compatibility and sensor placement guidance.
- Installation and wiring: Some models are easier to retrofit with existing wiring, while others may require professional installation, especially for high-power 240V systems.
- Warranty and support: A longer warranty and accessible customer support can be valuable for complex radiant heating setups.
In selecting a thermostat for underfloor heating, balance safety features, control complexity, and energy-saving capabilities. For households valuing remote access and smart home integration, options like MAXKOSKO or Mysa offer robust app ecosystems. Those prioritizing safety and straightforward operation may lean toward OJ Microline or SASWELL with solid GFCI protections and dual-sensing capabilities. Consider your flooring type, installation environment, and desired level of automation to find the best fit for comfort and efficiency.