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Does Radiant Heat Require A Special Thermostat?

Does Radiant Heat Require A Special Thermostat?

The sort of thermostat needed to run it may be the last of all the factors to take into account when switching to radiant heat. But you need to be aware of if a unique thermostat is needed to run your new heating system. Is a specific thermostat required for radiant underfloor heating?

You need a thermostat that can be simply adjusted and is savvy enough not to overheat your house when using radiant heat. It is therefore advisable to get one designed exclusively for radiant heat.

Nevertheless, some thermostats support both traditional heating systems and radiant heat, so you should make sure the thermostat you buy is compatible with the kind of heating system you have. SunTouch, ecobee, Honeywell, and Nest are some popular companies that work with radiant heat. Consider whether your underfloor heating is hydronic or electric as well.

Let’s review some product possibilities in more detail now that we’ve established that there are numerous types of thermostats you might utilize for your radiant heat. For additional information on special thermostats, including what temperature to set them at and how to adjust them for radiant heat, keep reading.

What Characterizes A Thermostat As Radiant Heat Compatible?

The thermostat you select for radiant heating should ideally contain a floor sensor. To prevent the floors from getting overly hot or cold, a floor sensor constantly monitors their temperature. The water heater must also be under the control of a thermostat designed for hydronic radiant heat because it is the warm water that heats your floors.

The thermostat for electric radiant floor heating must be a straightforward line voltage thermostat. Consult the user’s manual or get in touch with the manufacturer if you’re ever unsure whether the thermostat is compatible.

Never forget to verify that you are in electrical compliance by checking the maximum voltage permitted by the thermostat to prevent overload.


Smart thermostats include the SunTouch model that controls radiant heat. It has WiFi capabilities and is accessible from outside your house. This device uses electric radiant heat and comes with a floor sensor and a room-temperature sensor as options. It can be scheduled for up to seven days in advance. It also has a screen that can be adjusted so you may vary the hue to match your interior decor.


Does Radiant Heat Require A Special Thermostat?

The ecobee has a ton of intelligent features. With the use of sensors, it can detect whether you are at home or not and will alter the temperature accordingly. Additionally, it provides remote room sensors and voice control. Systems that use hydronic radiant heat perform well with this model. Even though it is one of the more expensive alternatives, this thermostat is among the most advanced ones available.

Honeywell TH115-AF-GA/U

Only electric radiant floor heating systems can use this thermostat. It does feature a floor sensor, so it will keep your floors at a fairly accurate temperature. Additionally, the thermostat may be programmed for up to seven days in advance, allowing you to set the temperature for when you will be home and away. Make sure your radiant heat is a resistive load because this thermostat is only for resistive loads.

Honeywell Aube TH140-28-01-B/U

The features of this additional Honeywell option are the same as those of the one previously mentioned and it utilizes hydronic radiant floor heating. This thermostat also functions with central heating.


Does Radiant Heat Require A Special Thermostat?

The Nest thermostat from Google is praised as the top smart thermostat for your house. The “real radiant” characteristic of Nest makes it compatible with underfloor heating.

The same thermostat can be used for radiant heat and central air conditioning at the same time, according to information found on Google Nest’s support website, though many reviews appear to be divided on this issue. It’s advisable to consult a professional if you’re using a hybrid system to ensure proper installation and support.

This thermostat is “smart,” meaning it has WiFi capabilities and can be operated from outside your house. The temperatures in each room of your home can be detected and transmitted with the help of accessories. The Nest is a nice option for you if you’re wowed by cutting-edge technology, but it’s not the best choice for radiant heat because it lacks a floor sensor.

The Number Of Thermostats Required For Underfloor Heating

Does Radiant Heat Require A Special Thermostat?

One benefit of radiant heat flooring is the control it gives you over various regions of your house by allowing you to set up multi-zone spaces with independent thermostats.

You can set up the entire system to be controlled by a single thermostat, but it is a matter of personal preference. However, those distinct rooms and sections can be altered according to their size or occupants by having various zones, each with its own thermostat.

Separate thermostats may require more management, but they could result in significant energy cost savings. You may program select rooms to warm up at specific times, such as bathrooms during morning rush hour or bedrooms at night, if your thermostats are programmable.

What Thermostat Setting Should You Use For Underfloor Heating?

You must read the manufacturer’s programming instructions before setting your thermostat for radiant underfloor heating. There are numerous models available, and they all follow some common processes.

If you are not experienced or have not carefully read the manufacturer’s instructions, do not attempt to deal with electrical wiring. Always seek professional advice when in doubt.

What Temperature Is The Optimal Setting For Radiant Heat?

It is recommended to set the floor temperature at 80 to 85 degrees, and then adjust it from there. The real temperature of the room will be far lower than the setting on their thermostat since underfloor heating radiates. For those who want it extra warm, most radiant heaters can reach temperatures of above 100 degrees.

This choice is heavily influenced by personal preference and level of comfort, but keep in mind that one advantage of radiant heat is the cost savings on electricity. Instead of raising the thermostat before allowing the heater enough time to do what it does best, let it warm the area.


There isn’t one particular type of thermostat that is necessary for radiant floor heating. Numerous thermostats can control both conventional HVAC systems and radiant heat. You are sure to find the finest option for you and your family, whether it be a smart thermostat or the most basic variety, as long as you are reviewing the specifications, according to instructions, and moving forward with safety. Enjoy your toasty warm feet from your radiant underfloor heating while you take your time looking!

Does Radiant Heat Require A Special Thermostat?

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Written by HVAC Contributor

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