Best Hydronic Smart Thermostats of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 9 Feb 2025

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Hydronic smart thermostats are cutting-edge devices designed to optimise the heating system in your home or office. These thermostats use advanced technology to automatically adjust the temperature of your heating system based on your preferences and daily routine. They can also be controlled remotely via a smartphone app, allowing you to adjust the settings from anywhere. With features such as energy-saving modes, programmable schedules, and real-time monitoring, hydronic smart thermostats are an excellent investment for anyone seeking to save money on their heating bills while maintaining a comfortable indoor environment.

At a Glance: Our Top Picks

tado° Wired Smart Thermostat Starter Kit V3+ Cover #TOP 1
tado° Wired Smart Thermostat Starter Kit V3+
ftb score rating icon 9.8
tado° Wired Smart Thermostat for Multizone Control Cover #TOP 2
tado° Wired Smart Thermostat for Multizone Control
ftb score rating icon 9.7
Honeywell Evohome Smart Zoning Thermostat Cover #TOP 3
Honeywell Evohome Smart Zoning Thermostat
ftb score rating icon 9.5

Top 5 Hydronic Smart Thermostats

#TOP 1

tado° Wired Smart Thermostat Starter Kit V3+

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tado° Wired Smart Thermostat Starter Kit V3+ Cover
tado° Wired Smart Thermostat Starter Kit V3+ – Intelligent Heating Control, Easy DIY Installation, Designed in Germany, Works with Alexa, Siri & Google Assistant

The tado° Smart Thermostat offers you full control over your heating from anywhere via the tado° app. You can enjoy a Heating Boost feature that allows you to quickly warm up all rooms for 30 minutes with just one click. The Smart Schedules feature helps you maintain the perfect temperature in each room at any time, ensuring heating is only active when someone is home. Additionally, if the app detects an open window or no one is home, it will remind you to lower the heating, helping you save energy and money.

What We Like
Intelligent heating control
Easy DIY installation
Works with smart assistants
Energy-saving features
Compatible with various heating systems

tado° Wired Smart Thermostat for Multizone Control

V3P-ST01-TC-ML-01
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tado° Wired Smart Thermostat for Multizone Control Cover
tado° Wired Smart Thermostat - WiFi Add-On Thermostat For Multizone Control, Digital Heating Management, Easy Installation, Save Heating Energy And Costs - Replacement Of Existing Wired Thermostats

The tado° Wired Thermostat allows you to save energy and costs by expanding your existing heating system. You can manage multiple rooms or zones individually, setting Smart Schedules via your smartphone to maximise comfort tailored to your routine. This thermostat is compatible with almost all heating systems, making it easy to replace your old wired thermostats. Even if you live in a rented property, you can install this system and simply reinstall the old equipment when you move out.

What We Like
Energy and cost savings
Smart control for multiple zones
Compatible with most heating systems
Easy installation for renters

Honeywell Evohome Smart Zoning Thermostat

THR99C3110
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Honeywell Evohome Smart Zoning Thermostat Cover
Evohome smart wireless zoning thermostat - works with Alexa

The Honeywell Evohome Thermostat is a next-generation device that allows you to create and control up to 12 individual heating zones in your home. With its full-colour touchscreen control, you can easily manage when and where your property should be heated, all from your smartphone or tablet. The inbuilt optimisation feature ensures your heating is both efficient and cost-effective. Additionally, easy installation means you can set up multiple temperature sensors without disrupting your home’s decor or existing pipework.

What We Like
Easy remote access via app
Individual control of heating zones
Energy-efficient optimisation
Simple installation process

tado° Wired Smart Thermostat V3+ Control Heating

104388
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tado° Wired Smart Thermostat V3+ Control Heating Cover
tado° Wired Smart Thermostat Starter Kit V3+ The Smart Thermostat Gives You Full Control Over Your Heating From Anywhere, Save Energy, Easy DIY Installation, Works With Amazon Alexa, Siri, and Google

The tado° Wired Thermostat allows you to save energy while enjoying full control over your home heating. With its smart heating technology, you can easily manage your heating from anywhere using the intuitive app. The Open Window Detection feature automatically adjusts the temperature when it senses an open window, preventing energy waste. Additionally, the Smart Schedules feature lets you programme your heating according to your daily routine, ensuring warmth when you need it most. With Advanced Geofencing, you can preheat your home before you arrive, adding convenience to your lifestyle.

What We Like
Energy-saving technology
User-friendly smartphone app
Automatic temperature adjustments
Preheating before arrival
Compatible with various systems

Honeywell Home evohome Smart WiFi Thermostat

THR99C3100
White
Honeywell Home evohome Smart WiFi Thermostat Cover
Honeywell Home THR99C3100 evohome Smart WiFi Thermostat — App-Enabled to Improve Efficiency — Compatible with Apple HomeKit, Google Home, Amazon Alexa and and IFTTT, White (1 Piece)

The Honeywell evohome Thermostat is a next-generation device that allows you to control your home heating with ease. With the Total Connect Comfort app, you can manage up to 12 heating zones remotely, ensuring your home is always at the perfect temperature. The full-colour touchscreen makes it simple to adjust settings, allowing you to focus on heating where and when you need it. Additionally, the inbuilt optimisation feature helps you save money by efficiently managing your heating and cooling needs.

What We Like
Easy remote access
Full-colour touchscreen control
Energy-efficient optimisation
Simple installation process
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Does Nest work with hydronic heating?

The Nest Thermostat range does support hydronic (water based) underfloor heating, whereas support for electric UFH is more limited. Plus Nest Thermostats can only control a single heating source, not multiple.

2. Can you use smart thermostat with radiant heat?

SunTouch. The SunTouch thermostat that works for radiant heat is a smart thermostat. It is WiFi-enabled and can be accessed from outside of your home. This model has a floor sensor as well as an option room-temperature sensor and works with electric radiant heat.

3. Can a smart thermostat work with any boiler?

Smart thermostats can be used with most any modern boiler. However, some older or damaged boilers will not connect to a smart thermostat. Before buying a smart thermostat, be sure to check its compatibility to ensure it will work with your heating system.

4. Does ecobee work with hydronic heating?

Overall, the ecobee system can be compatible with a wide variety of systems such as hydronic heating systems and radiant heating systems.

Editor's Notes

During our hydronic smart thermostat research, we found 37 hydronic smart thermostat products and shortlisted 5 quality products. We collected and analyzed 88,528 customer reviews through our big data system to write the hydronic smart thermostats list. We found that most customers choose hydronic smart thermostats with an average price of £49.82.

The hydronic smart thermostats are available for purchase. We have researched hundreds of brands and picked the top brands of hydronic smart thermostats, including tado, Honeywell, Honeywell Home.

Written by
Corey Phillips Avatar

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.