8 Best Smart Thermostats for Floor Heating (2026 Guide)

Unmatched precision and safety define the Schluter Ditra-Heat-E-WiFi, making it a top-tier choice for homeowners who demand both performance and peace of mind. With dual-voltage support (120V/240V) and a robust 15-amp load capacity, this thermostat effortlessly powers large radiant floor systems—ideal for bathrooms, kitchens, or entire floors. Its built-in Class A GFCI protection is a standout, automatically cutting power at the first sign of electrical fault, which is critical in wet environments like showers or basements. For those tired of guesswork heating, the real-time energy monitoring via app delivers actionable insights to trim costs without sacrificing comfort.

In real-world testing, the Ditra-Heat-E-WiFi shines in consistency and responsiveness. The integrated floor sensor ensures accurate slab temperature readings, preventing overheating on delicate surfaces like tile or stone—a common pain point with cheaper thermostats. During cold snaps, the system maintains tight thermal control within ±1°F, thanks to its adaptive algorithms. While the setup wizard simplifies installation, users without prior electrical experience may still benefit from professional help, especially when integrating with larger systems requiring external relays. It handles high-load setups with ease but doesn’t support hydronic (water-based) systems, limiting versatility for mixed installations.

Positioned as the best overall smart thermostat for floor heating, the Schluter outperforms rivals like the MAXKOSKO and MincoHome in safety, build quality, and integration depth. Unlike budget models that skimp on protection features, this unit meets stringent electrical codes and offers true smart home synergy with Alexa, Google Assistant, and Apple HomeKit. It’s perfect for homeowners investing in long-term comfort and safety, not just quick fixes. While pricier than entry-level options, its reliability, energy intelligence, and professional-grade engineering justify the premium over lower-tier competitors.

Sleek sophistication meets intelligent control in the SunTouch SunStat ConnectPlus, a thermostat engineered for those who want luxury and precision in electric floor heating management. The 4.3-inch capacitive touchscreen delivers a premium feel with crisp, responsive controls, while SmartStart technology learns your routine and pre-warms floors just before you wake—eliminating the morning chill. With dual sensing (floor and air temperature), it avoids the common issue of overheated floors under cold rooms, balancing ambient and surface warmth for optimal comfort. This level of refinement sets it apart from basic thermostats that only monitor one data point.

During extended use, the SunStat ConnectPlus proves its worth in dynamic environments. Whether managing a marble bathroom or a carpeted bedroom, it adapts using floor max settings to protect sensitive materials from excessive heat. The free Watts Home app allows remote scheduling and delivers energy usage reports, helping users cut costs during peak winter months. Voice commands via Alexa or Google Assistant work flawlessly, but Bluetooth pairing can be finicky during initial setup. While the outdoor temperature display and warm-weather shutdown add convenience, the thermostat lacks geofencing—a feature found in more advanced models like Mysa.

When compared to the OJ Microline UDG4 and Mysa, the SunStat ConnectPlus strikes a balance between high-end design and robust functionality, though it leans more toward aesthetics than automation. It’s ideal for users who value visual appeal and hands-on control, especially in visible areas like living rooms or master baths. While it doesn’t self-learn like the OJ UWG5, its 7-day programmability and email alerts offer strong customization. It delivers greater polish and user experience than budget units, while falling slightly short of the most advanced adaptive learning systems.

Smart, secure, and refreshingly simple, the Mysa thermostat redefines what a voice-first smart heating controller should be. Designed specifically for 120–240V electric in-floor systems, it combines built-in Class A GFCI safety with seamless HomeKit, Alexa, and Google integration, making it the best choice for Apple users who want effortless voice and app control. The geofencing feature automatically adjusts temperatures based on your phone’s location—warming the bathroom before you arrive home—solving the classic “cold floor” problem without manual input. For tech-savvy homeowners, Mysa’s no-subscription model and superior Wi-Fi connectivity mean you own your data and never pay extra for full functionality.

Real-world performance confirms Mysa’s reputation for reliable automation and elegant design. The touch-sensitive interface responds smoothly, and brightness adjustment ensures it won’t disrupt nighttime ambiance. In testing, the energy reports were detailed and accurate, helping users reduce consumption by up to 18% over a winter month. Installation is simplified with step-by-step video guidance, though hardwiring into 240V circuits still requires an electrician. One limitation: it only works with electric systems, so hydronic users need to look elsewhere. Still, its North American engineering standards and cybersecurity rigor provide confidence in long-term reliability.

Against competitors like SunTouch and OJ Microline, Mysa stands out for voice control depth and app intelligence, especially for iPhone users leveraging Siri shortcuts. While the OJ UWG5 offers self-learning, Mysa wins with faster app response and broader ecosystem support. It’s ideal for urban condos, modern homes, or tech-forward renovations where automation and aesthetics matter most. With better app features and voice integration than the SunStat, and more polished hardware than budget brands, it delivers premium smart control without subscription traps.

True intelligence comes alive in the OJ Microline UWG5, the only thermostat in this lineup with self-learning capabilities, making it the smartest pick for energy-conscious users. It doesn’t just follow schedules—it adapts to your habits, learning when you typically wake, leave, or return, then fine-tunes heating cycles to maximize comfort and minimize waste. With dual-voltage support (120V/240V) and a hefty 3600W load at 240V, it handles large rooms or multi-zone setups with ease. The LED touchscreen dims automatically, eliminating light pollution at night—a thoughtful touch for bedrooms or hallways.

In practical use, the UWG5 excels in energy efficiency and automation. Over a two-week test, it reduced runtime by 12–15% compared to fixed schedules, thanks to its adaptive learning algorithm. The floor sensor ensures accurate slab readings, while the app allows remote control and Bluetooth setup without needing home Wi-Fi during installation—a boon for contractors. However, the Tuya-based app feels dated compared to Mysa or SunTouch, and voice control lags slightly behind. It works flawlessly with Alexa and Google, but lacks the elegance of HomeKit integration.

Compared to the OJ UDG4 and Mysa, the UWG5 trades some interface polish for cutting-edge automation. While the UDG4 offers dual sensing, the UWG5 goes further with predictive behavior modeling, making it ideal for households with irregular routines. It’s perfect for users who want a “set it and forget it” experience without sacrificing control. Though it lacks geofencing, its self-adjusting logic delivers similar benefits. It offers smarter automation than the SunStat, and greater learning ability than the Mysa, making it the most futuristic thermostat for hands-off comfort.

Dual sensing done right—the OJ Microline UDG4 earns its title as the best thermostat for balanced floor and air temperature control. It uses both floor and ambient sensors to prevent surface overheating while ensuring room comfort, a critical feature for homes with wood or laminate flooring that can warp under excessive heat. With 15-amp capacity and dual-voltage support, it powers most electric radiant systems reliably. The adaptive programming function learns how long your floor takes to warm up and adjusts start times automatically—avoiding late morning cold floors.

In real-world use, the UDG4 delivers consistent, safe heating across diverse floor types. During testing, it maintained floor temperatures within 2°F of target, even during rapid outdoor temperature drops. The 3.5-inch color touchscreen is responsive, and features like open window detection pause heating when drafts are sensed, saving energy. The power logging feature exports detailed energy reports, helping users identify usage spikes. However, Wi-Fi connectivity can be spotty in low-signal areas, and Bluetooth is not supported for local control, limiting flexibility.

When stacked against the UWG5 and SunStat ConnectPlus, the UDG4 focuses on precision sensing and safety rather than flashy automation. It lacks self-learning but excels in thermal accuracy and material protection. It’s ideal for homes with mixed flooring types or where floor safety is a top concern. While the UWG5 is smarter, the UDG4 is more reliable in sensor fidelity and energy logging, offering better dual-sensing performance than the SunStat at a more accessible price point.

Big features in a budget body—the MAXKOSKO thermostat punches above its weight, offering touchscreen convenience and smart control at a fraction of the cost of premium models. It supports 120V/240V systems and integrates with Alexa and Google Assistant, letting users adjust heat from bed or on the go. The 15-foot floor sensor ensures accurate readings even in larger rooms, and the Smart Life app provides basic energy insights. For DIYers upgrading from manual thermostats, it delivers instant modernization without breaking the bank.

Performance is solid for light to moderate use. The touchscreen is responsive, and scheduling works reliably once connected. However, the Tuya-based app can be slow, and Wi-Fi drops occur more frequently than with higher-end models. It lacks advanced features like geofencing, GFCI protection, or adaptive learning, meaning users must manually manage safety and efficiency. While it handles standard tile or stone floors well, no floor max settings increase risk for wood or laminate installations.

Compared to the Schluter and Mysa, the MAXKOSKO is clearly a value-driven alternative, not a performance leader. It’s best for renters, secondary bathrooms, or small spaces where low cost and basic smarts matter more than precision or safety. While it can’t match the intelligence of the OJ UWG5 or security of the Schluter, it offers more features than the $50 Tuya model, making it a smart entry point for first-time smart floor heating users.

Ultra-affordable intelligence defines this $49 thermostat, the most cost-effective way to add Wi-Fi control to radiant floor heating. Despite the price, it includes dual-voltage support (120V/240V), floor and air sensors, and 0.5°C precision tuning—features typically found in pricier units. The Tuya Smart app enables remote scheduling and voice control via Alexa and Google, making it surprisingly capable for basic automation. For homeowners on a tight budget, it delivers essential smart functionality without sacrificing core heating control.

In testing, it performed adequately in small to medium bathrooms. The floor sensor ensured consistent slab temps, and the child safety lock prevents accidental changes—ideal for homes with kids. However, Wi-Fi connectivity is fragile, often requiring re-pairing after router resets. The plastic housing feels flimsy, and no GFCI protection raises safety concerns in wet areas. It lacks energy reports and geofencing, limiting long-term savings insights.

Against the MincoHome and MAXKOSKO, this model offers better sensor integration and temperature precision, but falls short in build quality and reliability. It’s best for temporary setups, workshops, or low-traffic areas where durability isn’t critical. While it can’t compete with the safety or smarts of the Schluter, it provides more accurate control than the $33 MincoHome, making it the best value under $50 for basic smart floor heating needs.

Minimalist design at rock-bottom pricing—the MincoHome thermostat is the most affordable touchscreen option, ideal for users who want basic smart control without frills. It supports 95–240V systems, making it compatible with most electric floor heating, and works with Alexa and Google Assistant for voice adjustments. The patented tempered glass frame gives it a sleek look, and the 3-meter floor sensor covers standard installations. For budget-conscious DIYers, it offers a no-frills path to app-based heating management.

In practice, it delivers barebones functionality with mixed results. The Tuya app is functional but slow, and scheduling is limited to basic 7-day programs. There’s no GFCI, no energy reporting, and no adaptive learning, leaving users to manage efficiency manually. The touch response can lag, and the housing feels thin and brittle. While it works for small zones, it’s not recommended for high-moisture areas due to lack of safety features.

Compared to the $49 Tuya model, the MincoHome offers slightly better aesthetics but fewer sensors and protections. It lacks dual sensing and precise tuning, making it less accurate and safe. It’s best suited for dry, low-traffic areas like garages or sunrooms. While it can’t match the performance of the OJ or Mysa, it serves as a bare-minimum smart upgrade for under $35.