Best Hydronic Heaters of 2025
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It may be tricky to find hydronic heaters, but our team has found the best ones for you after careful evaluation. We've reviewed all the big brands, including Smiths, Thermix, Bidex, Greened House, Devola to see which ones deliver on your promises. In our review of the 20 hydronic heaters, we spent 72 hours evaluating and testing.
We have put together a collection of 10 Best Hydronic Heaters for a wide variety of different needs. And at the top of the best hydronic heaters chain is Smiths Heater. Keep on reading and choose the best one from the list!
At a Glance: Our Top Picks
#TOP 1
9.8
#TOP 2
9.7
#TOP 3
9.5
Top 10 Hydronic Heaters
Smiths Hydronic Plinth Heater Space Saver 3
Introducing the Smiths Plinth Heater, a stainless steel effect heater that is perfect for rooms up to 23m³. With a low decibel level of 26-39dB, this heater operates quietly, providing a peaceful environment for you to relax. The heater is energy-efficient, consuming only 16-21W, which can help you save on your electricity bill. Its 15mm plumbing connection makes it easy to install, while its power supply of 3A ensures a stable and continuous performance. With these features, the Smiths Plinth Heater is a great choice to keep your space warm and comfortable while saving energy and money.
Thermix KPH-1800 Wireless - Kitchen Plinth Heater - Central Heating - Hydronic -1.8Kw
Thermix KPH-2400 Wireless Kitchen Plinth Heater
The Thermix Plinth Heater is a wireless hydronic heater that is perfect for heating your kitchen. With its thermostatically controlled wireless thermostat, you can easily control the heat output of the heater. It has a power supply of 230V-50Hz via 3A fused spur and has a heat output of 1820 watts @ Normal speed and 2105 watts @ Boost speed. The heater has a maximum operating pressure of 6bar and pipe connection size of 15mm, making it a safe and efficient choice for your home. The wireless feature allows you to control the temperature from anywhere in your home, making it a convenient choice for busy households.
Bidex 500 Central Heating Kitchen Plinth Heater
The Bidex 500 Plinth Heater is a cost-effective and efficient heating solution that can save you up to 24% more energy than standard radiators. This heater runs off your central heating system, making it much cheaper than electric-only heaters. You can control it manually or let it automatically switch on and off to keep your kitchen warm. With its sleek design, this Plinth Heater can fit under a 500mm kitchen cabinet and free up space for your storage needs. It has a low noise 2-speed fan to give you extra heat when you need it. This heater can warm up to 30 square metres of space and is perfect for those who want to save on energy costs and keep their kitchen warm and cosy.
Greened House Diamond 500 Central Heating Kitchen Plinth Heater
Bidex 500 Central Heating Kitchen Plinth Heater
Devola Over Door Electric Heater 3kW Air Curtain
This is the Devola Air Curtain Heater, a powerful wall-mounted over-door heater that is perfect for installation in shop doorways, conservatories, and business reception areas. It is also ideal for use in homes and anywhere you want to reduce heat loss or temperature fluctuations where an exterior door is frequently in use. With market-leading 2 heat settings - 3kW and 1.5kW settings, you can enjoy a higher output of heat at a great value price. The heater also features a cool air function for the summer. Its quiet operation of 48dB makes it suitable for use in office, shops, restaurants, and garages. The stylish and compact design, with aluminium alloy fan wheels and powder-coated steel housing, ensures a premium quality and finish.
HOMCOM Mica Electric Space Heater
Warmlite Carbon Infrared Heater with Oscillation and Overheat Protection
The Warmlite Infrared Heater is a stylish and efficient heating solution for your home or office. With a powerful carbon fibre heating element, it heats up in seconds and provides direct warmth to your body, thanks to its infrared waves. You can choose between two heat settings, 500W and 1000W, depending on your preference. The adjustable thermostat allows you to set your desired temperature, with a maximum of 65°C. The heater features automatic oscillation that distributes heat across a 70-degree angle, ensuring all areas of the room are covered. With a lightweight and portable design, it is easy to move around the house or office. Safety is also ensured with the built-in tip-over switch, thermal cut-off, and dual overheat protection.
Bosch Smart Home Room Thermostat Ii for Wired Heating Systems, 230 V
Frequently Asked Questions (FAQs)
1. Is hydronic heating cheaper to run?
Hydronic heating systems are less expensive to run than some other types of heaters. By some calculations, hydronic heating systems are 35 percent more cost effective than running a ducted system.
2. Are hydronic plinth heaters any good?
If you're looking to save space, lower your power bill, and improve the heating system in your kitchen, you should definitely consider a plinth heater. Unlike traditional radiators, kitchen plinth heaters don't hog your walls and floors; just install them at the bottom of your cabinetry, and voila!
3. How does a hydronic plinth heater work?
Central Heating Plinth Heaters They come with flexible hoses, making it easy to connect the heater to your regular pipework and then position the heater just where you want it. When your central heating is switched on, hot water is pumped through the kickspace heater's fins just like it would with a radiator.
4. Is hydronic heating healthy?
While so many household items can be breeding grounds for dust mites, allergens and bacteria, hydronic heating is a safe bet if you're looking to make your home a healthier one. And with little upkeep required, it's one of the easiest ways to ensure you and your family breathe a little easier.
During our hydronic heater research, we found 20 hydronic heater products and shortlisted 10 quality products. We collected and analyzed 1,707 customer reviews through our big data system to write the hydronic heaters list. We found that most customers choose hydronic heaters with an average price of £203.72.
The hydronic heaters are available for purchase. We have researched hundreds of brands and picked the top brands of hydronic heaters, including Smiths, Thermix, Bidex, Greened House, Devola. The seller of top 1 product has received honest feedback from 1,106 consumers with an average rating of 4.7.
Mohammed Clark is an architect and a contractor. His architectural skills are not limited to designing the plan for structures alone, but it extends to aesthetics and home décor. Before establishing his firm, he worked under a construction firm for eight years. Mohammed has gathered enough experience from his time practicing as a professional architect and now has vast knowledge in home designs and aesthetics.