A radiant floor heating system is one of the most efficient ways to keep your home warm, but the right thermostat is key to getting the most out of it. Unlike traditional HVAC thermostats, radiant heat thermostats are designed to manage gradual, consistent warmth—giving you better energy efficiency and comfort.
Expect to spend between $50 and $250 on a radiant heat thermostat, with manual models at the lower end and smart thermostats at the higher end. The best choice depends on your radiant floor heating system type, energy-saving needs, and whether you prefer a programmable or hands-on approach.
Read on to learn more about the best radiant heat thermostats, their key features, and how to choose the right one for your home.
Do You Need a Special Thermostat for Radiant Heat Systems?
Yes—radiant heat systems require a thermostat designed specifically for their unique heating process. Unlike standard HVAC systems that cycle on and off frequently, radiant floor heating warms surfaces gradually and maintains consistent temperatures. A regular HVAC thermostat isn’t equipped to handle this, which can lead to inefficient heating and higher energy costs.
Homeowners have two main choices:
- Integrated thermostats: These control both radiant heat and your central HVAC system from a single device, making operation simpler.
- Independent thermostats: These work exclusively for radiant heating, ensuring precise temperature control and maximum efficiency.
Your decision depends on your home’s setup and personal preferences. If you want streamlined control over your entire heating system, an integrated thermostat is convenient. But if you’re focused on optimizing radiant heating alone, an independent thermostat may be the better choice.
Key Features To Look for in a Radiant Heat Thermostat
The right thermostat can give you more efficient heating, lower energy costs, and better comfort. When shopping, here’s what to look for:
Accurate Temperature Sensing & Easy Display
A good thermostat should have a precise temperature sensor to maintain even heat. Also, look for a clear, easy-to-read display. Some models even have displays that change colors based on temperature for quick at-a-glance updates.
Compatibility with Your Heating System
Radiant heat thermostats are designed for specific heating types:
- Electric systems require thermostats rated for high voltage (120V–240V).
- Hydronic (water-based) systems need thermostats that work with boilers and pumps.
Using the wrong thermostat can lead to poor performance or system damage. Be sure to check your heating system before you buy.
Programmable or Smart Controls
A programmable thermostat lets you set heating schedules, like warming floors before you wake up. Smart models add Wi-Fi control, voice assistant compatibility (Alexa, Google Home), and adaptive learning for even better efficiency. If you want remote access and energy savings, a smart thermostat is worth considering.
Voltage Compatibility
Radiant heating systems operate at either low voltage (24V) or high voltage (120V–240V). Choosing a thermostat with the wrong voltage can cause malfunctions or failure. Check your system’s voltage before buying.
Best Thermostats for Radiant Floor Heating Systems
The right thermostat depends on the type of heating system you have and your budget. Here are some top-rated options based on performance, ease of use, and your home setup:
Best for Hydronic Radiant Heat: Aube by Honeywell (TH140-28-01-B)
The Aube by Honeywell is a reliable, budget-friendly choice for homeowners with hydronic radiant heating. While it’s not a smart thermostat, it offers a range of programmable features that help improve efficiency.
✅ Weekly programmable settings – Customize heating schedules for different days.
✅ Battery backup – Keeps settings saved during power outages.
✅ Water heater compatibility – Helps regulate the heat source for hydronic systems.
✅ Travel mode – Adjusts temperature settings while you’re away to save energy.
Best for: Homeowners who want simple, programmable control over a hydronic radiant heat system.
Best Smart Thermostat for Electric Radiant Heat: Mysa Smart Thermostat
For electric radiant floor heating, the Mysa Smart Thermostat combines modern design with advanced smart features for precise temperature control.
✅ Wi-Fi enabled – Control your heating remotely through a smartphone app.
✅ Smart home compatibility – Works with Alexa, Google Home, and Apple HomeKit.
✅ Handles high-power systems – Supports electric radiant heating up to 3,800 watts.
✅ Dual sensing options – Can monitor either floor temperature or room temperature for customized control.
Best for: Tech-savvy homeowners looking for remote access, smart scheduling, and energy savings with an electric radiant floor heating system.
Best Mid-Range Option: Saswell Programmable Thermostat
If you want programmable settings without the complexity of Wi-Fi setup, the Saswell Programmable Thermostat is a solid mid-range choice.
✅ Custom schedules – Set heating preferences for different days of the week.
✅ Pre-programmed settings – Quickly select heating modes for convenience.
✅ Dual sensor compatibility – Choose between a floor sensor (for cold months) or a room sensor (for mild weather).
✅ Highly accurate – Maintains temperature within 1°F, helping diagnose potential heating issues.
🚨 Important: This thermostat only works with electric radiant heat—it is not compatible with hydronic systems.
Best for: Homeowners who want automated scheduling without the hassle of smart features.
Best Budget Pick: Baomain Manual Radiant Floor Heat Controller
For those who prefer simple, manual control, the Baomain Manual Controller is a no-fuss, budget-friendly option for both electric and hydronic radiant heating.
✅ Dial-based control – Adjust the temperature manually with ease.
✅ No programming needed – Just set it and forget it.
✅ Accurate temperature regulation – Keeps settings within 1°C.
✅ Affordable pricing – A cost-effective solution for basic radiant heat control.
Best for: Homeowners who want basic, hands-on control over their radiant heat system without complicated programming.
How To Install a Radiant Heat Thermostat
Installing a radiant heat thermostat is a manageable DIY project, but it involves electrical work—so if you’re not comfortable handling wiring, it’s best to hire an electrician. Here’s a step-by-step guide:
Step 1: Turn Off Power
Go to your home’s electrical panel and switch off the circuit breaker that controls your radiant heating system. This prevents electrical shock while you work.
Step 2: Remove the Old Thermostat
- If replacing an existing thermostat, unscrew and remove the cover.
- Carefully disconnect the wires and label them according to their terminals. This will make connecting the new thermostat much easier.
Step 3: Mount the New Thermostat
- Attach the base plate of the new thermostat to the wall using the provided screws.
- Make sure it’s level before tightening.
Step 4: Connect the Wires
- Match each labeled wire to the correct terminal on the new thermostat.
- Follow the manufacturer’s wiring guide to ensure proper connections.
Step 5: Attach the Thermostat Faceplate
Once the wiring is secure, snap or screw on the thermostat faceplate according to the model’s instructions.
Step 6: Restore Power & Program Settings
- Turn the circuit breaker back on to restore power.
- Follow the manufacturer’s programming instructions to set up your heating preferences.
When To Call an Electrician
If your thermostat requires high-voltage wiring (120V–240V) or you’re unsure about handling electrical connections, hiring a professional is the safest option. For more on professional electrical help, check out our guide on how to hire an electrician for your home.
