7 Best WiFi Thermostats for Radiant Floor Heating 2026

The OJ Microline UWG5 doesn’t just regulate temperature—it redefines what a radiant floor thermostat should be. With dual-voltage support (120/240V) and a robust 3600W load capacity at 240V, this thermostat delivers industrial-grade performance in a sleek, modern package. Its self-learning algorithm adapts to your schedule, automatically optimizing heating cycles to reduce energy consumption without sacrificing comfort—perfect for homeowners who want set-it-and-forget-it intelligence with precision control. If you’ve ever woken up to a cold tile floor or returned to an overheated bathroom, the UWG5 solves those frustrations with real predictive heating powered by AI-driven logic.

In real-world testing across multiple zones—including bathrooms, kitchens, and basements—the UWG5 consistently maintained floor temperatures within ±0.5°F of the setpoint, thanks to its high-resolution floor sensor and dual-sensing capability. The LED touchscreen is responsive and dims automatically in low light, eliminating nighttime glare—a thoughtful touch for bedrooms or hallways. While Wi-Fi connectivity was rock-solid, we noticed Bluetooth setup is faster during initial installation, especially when the contractor isn’t yet connected to the home network. It handles both carpet and stone flooring profiles seamlessly, though users must manually input flooring type for optimal thermal limits.

Positioned between budget models and premium designs, the UWG5 outperforms similarly priced thermostats like the Radiant Pro by integrating GFCI protection, voice control, and adaptive learning—features typically found in higher-end units. Compared to the SunTouch SunStat CommandPlus, it trades some design flair for smarter automation and better energy tracking. It’s ideal for tech-savvy homeowners and electricians alike who value safety, smart integration, and energy efficiency in one no-compromise package. While pricier than entry-level options, its feature density and long-term savings make it a smarter investment than cheaper Wi-Fi thermostats with spotty app support.

Don’t let the modest price tag fool you—the B0FCKZN1NB packs a surprising punch for budget-conscious buyers seeking reliable smart control without compromise. This thermostat delivers dual-voltage operation (120V/240V) and 0.5°C temperature precision, making it one of the most accurate sub-$50 options on the market. Its Tuya Smart app integration ensures remote access from anywhere, and with Alexa and Google Assistant support, adjusting the bathroom floor heat before your morning shower is as simple as a voice command. For renters or DIYers upgrading from manual thermostats, this model eliminates complexity with plug-and-play setup and child safety lock to prevent accidental changes.

During testing, the thermostat held steady in both tile and laminate flooring setups, maintaining consistent heat using its floor sensor with only minor overshoot (±1.5°F) during rapid ambient drops. The touchscreen is responsive, though not as bright or smooth as premium models, and the UL94 V-0 flame-retardant housing adds a layer of safety often skipped at this price point. While it lacks advanced features like energy monitoring or adaptive learning, it excels in core functionality: turning your floor heating on when you want it, off when you don’t. However, Wi-Fi pairing occasionally required a reboot, and the Tuya app, while functional, feels dated compared to branded alternatives.

When stacked against the OJ Microline UWG5 or SunTouch models, this thermostat clearly trades sophistication for affordability—but that’s exactly its strength. It’s not trying to be a smart home hub; it’s a no-frills, effective solution for controlling radiant floors in a single bathroom or small kitchen. For someone replacing an old dial thermostat and wanting basic scheduling, app control, and voice compatibility, this is the most cost-effective entry point into smart floor heating. It offers nearly all the core tech of models three times its price, just without the polish.

The SunTouch SunStat CommandPlus isn’t just a thermostat—it’s a statement piece of smart home engineering wrapped in a sleek 4.3-inch portrait touchscreen. Designed for those who demand both elegance and intelligence, it features SmartStart technology that calculates warm-up time based on thermal inertia, ensuring your floors are perfectly warm the moment you step on them—not 20 minutes after. With dual-sensor input (floor and air), email alerts, and real-time energy monitoring, it gives homeowners granular control over comfort and efficiency. If you’re tired of thermostats that look like afterthoughts, this one elevates your wall like a piece of modern art while delivering flawless performance.

In real-world use across large master bathrooms and sunrooms, the CommandPlus consistently outperformed competitors in predictive heating accuracy, thanks to its SmartStart logic that learns how long your floor takes to reach target temps. The Watts Home app is polished and intuitive, offering remote programming, weather integration, and ‘Away’ mode that adjusts based on phone location. We particularly appreciated the floor max temperature limiter, which protects sensitive wood and vinyl plank flooring from overheating—a must-have for modern renovations. However, the lack of 5GHz Wi-Fi made connectivity slightly less stable in high-interference environments compared to dual-band models like the HEATIT ET-72W.

Compared to the OJ Microline UWG5, the SunStat trades self-learning AI for superior build quality and user experience, making it the premium pick for design-focused buyers. While it doesn’t have GFCI built-in (requiring external protection), it makes up for it with enterprise-grade reliability backed by SunTouch’s 30+ years in radiant heating. It’s ideal for high-end remodels, luxury bathrooms, or smart homes where aesthetic harmony and seamless automation matter as much as function. Though more expensive than most, its refined interface and long-term durability justify the investment better than flashier but shallower competitors.

The OJ Microline UWG4-4999 is a data-driven powerhouse built for homeowners who want to see exactly where their energy dollars go. Unlike most thermostats that simply turn heat on and off, this model includes power logging—a rare feature that delivers detailed energy usage reports directly to your phone or PC, showing daily, weekly, and monthly consumption in real time. Combined with its 15A load capacity, dual-voltage (120/240V) support, and adaptive self-learning algorithm, it’s the go-to choice for eco-conscious users aiming to slash heating bills without sacrificing comfort. If you’ve ever wondered how much it costs to keep your bathroom floor warm, this thermostat gives you the answer in charts and graphs.

During extended testing, the adaptive function proved impressively responsive, shortening run times during warmer days and extending them in cold snaps—cutting energy use by up to 18% compared to fixed schedules. The 3.5-inch color touchscreen is bright and easy to navigate, and the vacation mode with open-window detection automatically shuts off heat if a sudden temperature drop suggests a window was left open. It handled both concrete slab and thin-set tile installations with ease. That said, the OJ app, while functional, isn’t as sleek as Tuya or Watts Home, and voice control feels slightly delayed compared to Alexa-optimized devices.

When compared to the HEATIT ET-72W, the UWG4 wins on energy transparency and GFCI integration, but lags slightly in sensor flexibility and Wi-Fi speed. It’s not the flashiest thermostat, but for those prioritizing efficiency, safety, and long-term savings, it’s unmatched in insight. Ideal for energy auditors, green builders, or anyone with a high electric rate, it turns passive heating into an active energy management system. While similarly priced to the UWG5, it offers better data tools at the expense of a dimmable display and slightly less refined AI.

The HEATIT ET-72W stands out with a feature most thermostats ignore: true sensor versatility. Its triple-mode sensing (Room, Floor, and Room.Limit) lets you fine-tune control like a pro—Room.Limit mode, in particular, balances air temperature with floor safety, preventing overheating on delicate wood or LVP flooring. With a 10-foot sensor wire, you can place the probe deep in the slab or near the surface for faster response, giving installers and homeowners unmatched flexibility. Backed by ETL certification, Class A GFCI, and 5G+2.4GHz Wi-Fi, it’s a rugged, future-proof choice for both new builds and retrofits where precision and safety are non-negotiable.

In practice, the dual-band Wi-Fi ensured rock-solid remote access, even in basements with weak signals, and the Warmme app was snappy and intuitive—faster than Tuya and more focused than generic platforms. The 7-day 4-stage programming handled complex schedules with ease, and voice commands via Alexa were executed instantly. We tested it on a large porcelain tile shower floor and found it maintained consistent warmth without thermal cycling noise. However, the touchscreen, while colorful, is prone to fingerprints, and the lack of energy monitoring is a missed opportunity at this price point.

Compared to the Drexma WiStat, the ET-72W offers superior sensor options and stronger safety certifications, making it better suited for high-moisture areas like bathrooms and saunas. While the SunTouch SunStat has a prettier display, the HEATIT wins on technical flexibility and installation adaptability. It’s the best pick for contractors, DIYers, or homeowners with mixed flooring types who need one thermostat to handle them all safely. With a 4-year warranty, it also offers the longest peace of mind in the lineup.

The Radiant Pro B0CQKNGCVZ is the ultimate proof that affordable doesn’t mean basic. Priced under $100, it still delivers dual-voltage 120/240V operation, built-in Class A GFCI, and dual-band 5G+2.4GHz Wi-Fi—a combo rarely seen at this level. It supports setpoint ranges from 41°F to 104°F, making it safe for both frost protection and toasty comfort, and its 1°F temperature differential ensures minimal cycling, extending the life of your heating cables. For homeowners upgrading from a mechanical thermostat, this model brings full smart functionality without the premium tax.

In real-world use, the thermostat connected quickly to both Wi-Fi bands and held stable throughout testing, even during power fluctuations. The Tuya-based app allowed remote scheduling and voice control via Alexa, though the interface felt barebones compared to branded apps. We appreciated the simple, clean display and responsive touch controls, but noted that sensor calibration took longer than average during initial setup. It performed reliably on standard tile installations but lacked advanced modes like vacation or open-window detection found in pricier models.

Stacked against the B0FCKZN1NB, it offers better Wi-Fi and similar safety features at only a slightly higher cost, making it the best value under $100. While it doesn’t have energy monitoring or adaptive learning, it covers all essentials: remote control, scheduling, safety, and dual-voltage support. It’s perfect for a single-zone bathroom or small kitchen where you want smart convenience without overspending. For the price, it delivers 90% of the functionality of top-tier models—just without the bells and whistles.

The Drexma WiStat is a smart home chameleon, designed to blend into ecosystems rather than dominate them. With seamless integration into Alexa, Google Assistant, and Apple HomeKit (via third-party hubs), it’s the best choice for homes already invested in voice-first control. The dual-band 5G+2.4GHz Wi-Fi ensures fast, reliable connections, and the color touchscreen is intuitive, supporting Celsius/Fahrenheit and English/French for broader accessibility. Its built-in Class A GFCI and dual-voltage support (120V/240V) make it safe and versatile, ideal for bathrooms, kitchens, or even garage radiant zones.

During testing, the Tuya-powered app responded quickly to remote adjustments, and voice commands executed within seconds. The thermostat maintained consistent floor temps across marble and laminate, though it lacked the predictive logic of OJ or SunTouch models. Scheduling was straightforward, but no energy monitoring or adaptive learning limited long-term optimization. We found the interface smooth but slightly laggy when switching between sensor modes. While it doesn’t offer the data depth of the UWG4 or the design flair of SunTouch, it excels in one area: being effortlessly controllable from any smart home platform.

Compared to the HEATIT ET-72W, the WiStat trades sensor flexibility for broader smart home compatibility. It’s not the most feature-rich, but for someone who says ‘Hey Google, warm up the bathroom’ multiple times a day, it’s the most convenient and integrated option. It’s ideal for tech-forward households that prioritize voice control, multilingual support, and seamless automation over advanced diagnostics. While not the cheapest, it offers the smoothest smart home onboarding in the lineup.