Danfoss offer smarter heating, room by room.
Danfoss radiator thermostats make it easy to improve comfort and cut energy use – whether you’re upgrading your home or fitting a customer’s system.
With room-by-room control, warmer spaces won’t overheat, while cooler rooms stay comfortable. Our UK‑ready packs – Dynamic Combi Pack and Dynamic Radiator Pack – simplify specifying and fitting for common installations.
Prefer connected control? Our smart radiator thermostats let you set schedules, adjust heating from your phone, and fine‑tune comfort in every room – perfect for homeowners and installers looking for an upgrade.
From the Dynamic RA‑DV to the Revolver RA‑FS, our range offers reliable temperature stability and solutions for noisy valves.
Invented by Danfoss over 80 years ago, our thermostats are built to last – with robust liquid‑filled sensors for smooth regulation in domestic settings, and gas‑filled options for demanding commercial projects.
Features and benefits
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Danfoss radiator thermostats maintain your desired room temperatures for optimal comfort in your home — room by room.
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Responds automatically to changes in room temperature, helping reduce overheating and wasted heat.
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Robust, precision-manufactured liquid-filled sensors across our domestic UK range for dependable performance over time.
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Fast and easy installation
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Looking for commercial applications? We also offer a commercial range with gas-filled sensors and a wider choice of TRVs and sensors for different system requirements.
Mechanical, smart or design thermostat?

Are you looking for the updated range of radiator thermostats?

Are you more into smart thermostats that can be controlled via your smart phone?

Explore our range of mechanical design radiator thermostats
Energy savings
Self-regulating thermostatic radiator valves can save a lot of energy compared to manual valves. Studies show that the energy savings potential going from manual to thermostatic is between 30-36%. Going from a 15+ year old thermostat to electronic thermostats opens for another 23% savings to tap. The newer the technology, the more savings. Each leave does not represent an exact figure but gives a rough illustration on the energy savings performance.
Learn more about the energy savings potential of installing thermostatic radiator valves
Comfort level
Comfort performance is closely linked to the thermostats ability to keep the temperature as close as possible to the set point. Two main factors affect the performance; precise temperature control and reaction time. Our thermostats span from 1-22 min response time depending on the filling inside the bellow.
Each house symbol on the overview does not represent an exact figure but gives a rough illustration on the added performance on temperature regulation and comfort. Learn more about the effect of response time below.
Response time
Response time is the time it takes before the thermostats detects a change in temperature, and then starts to compensate for it by opening or closing the valve, to either lower or increase the temperature in the room, to reach the desired set temperature. Not to be mixed with the time it takes for the thermostat to restore the set temperature in the room.
Response time is closely linked to the filling medium inside the bellow of the thermostat. Wax is the slowest (40 min) where Danfoss does not have an offering. Then comes liquid (15-22 min) and our premium gas (10 min) which is the fastest reacting mechanical thermostat on the market. Finally, electronic components as the top-performer with 1 min response time.
The faster the response time, the better the comfort.
Learn more about reaction time and how it effects thermostat performance
Installation
Tells you what tool is required to install the thermostat. The symbol with the click-lock function represents our patented tool-free installation feature that allows you to install the thermostats using only your hands. This patented solution also makes sure that the clamping force is adequate, so it will not damage the thermostat or the valve but still securing a very firm grip.
Valve connection
Provides you with a quick overview of which connection types fit with our thermostats, so you easily can pick what type of thermostat to choose for replacement. In the mechanical range, you get the most options from the AveoTM and the AeroTM which fits RA, RAV, RAVL and RTD valves. From the electronic range, you get a broad range of options with the adapter system that fits 90+% of all radiator valves out there.

Check your savings potential
Upgrading your old radiator thermostats is a quick and easy way to reduce your energy consumption — and lower your heating bill. Want to know how much you can save? Check out our infographic to find out.
Learn more
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How it works
These videos cover essential information on radiator thermostat settings, symbols, and how thermostatic radiator valves can increase condensing boiler efficiency. Radiator thermostats are a fast and cheap way to optimize the heating system.
Danfoss AveoTM
Danfoss RA2000 series
How Thermostatic Radiator Valves increase condensing boiler efficiency
FAQ
How to save energy with using all radiators?
You save nothing by having one on full throttle and the others closed. In fact, a fully heated radiator will use more heat than 2 or 3 that are turned only a quarter of the up. This is especially true when you use district heating.
How do you ventilate a room?
When ventilating a room, turn down your thermostat and leave the windows open for 5-6 minutes. If you don’t turn down your thermostat, it will react to the draft by heating up automatically.
What should be the minimum temperature in a room?
Always maintain a minimum of 16 degrees in all rooms. Never go below 14 degrees; this might damage the building and cause dampness, condensation and mold.
How do you use sleep mode?
Save energy and money by turning your radiators down 2-3 degrees at night. But remember: If you turn them down more than 3 degrees, the money you could save will be used on reheating the room again.
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Data sheet | Adapters for thermostatic sensors | German | Multiple | 22 Jan, 2024 | 420.5 KB | |
| Data sheet | Adapters for thermostatic sensors | English | Multiple | 31 Jan, 2024 | 394.6 KB | |
| Data sheet | Adapters for thermostatic sensors | Lithuanian | Multiple | 31 Jan, 2024 | 416.6 KB | |
| Data sheet | Adapters for thermostatic sensors | Latvian | Multiple | 31 Jan, 2024 | 418.4 KB | |
| Data sheet | Éléments thermostatiques RAE | French | Multiple | 30 Jan, 2026 | 7.5 MB | |
| Data sheet | FJVR | Ukrainian | Ukraine | 23 Dec, 2021 | 204.2 KB | |
| Data sheet | RAE thermostatic sensors | Czech | Multiple | 04 Feb, 2026 | 1.8 MB | |
| Data sheet | RAE thermostatic sensors | English | Multiple | 07 Aug, 2014 | 1.3 MB | |
| Data sheet | RAE thermostatic sensors | Romanian, Moldavian, Moldovan | Multiple | 04 Feb, 2026 | 1.8 MB | |
| Data sheet | RAE thermostatic sensors | Dutch, Flemish | Multiple | 04 Feb, 2026 | 1.5 MB | |
| Data sheet | RAE thermostatic sensors | Hungarian | Multiple | 04 Feb, 2026 | 1.7 MB | |
| Data sheet | RAE thermostatic sensors | Spanish, Castilian | Multiple | 04 Feb, 2026 | 1.6 MB | |
| Data sheet | RAE thermostatic sensors | Italian | Multiple | 04 Feb, 2026 | 886.9 KB | |
| Data sheet | RAE thermostatic sensors | German | Multiple | 29 Jan, 2026 | 1.9 MB | |
| Data sheet | RAE thermostatic sensors | Latvian | Latvia | 04 Feb, 2026 | 1.7 MB | |
| Brochure | RAS-D2 Sales Leaflet | English | United Kingdom | 10 Sept, 2014 | 580.8 KB | |
| Data sheet | Return temperature limiter type FJVR | Danish | Multiple | 03 Jun, 2013 | 991.4 KB | |
| Data sheet | Return temperature limiter type FJVR | Lithuanian | Multiple | 06 Jun, 2013 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Romanian, Moldavian, Moldovan | Multiple | 19 Jan, 2016 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Slovak | Multiple | 19 Jan, 2016 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Polish | Multiple | 03 Jan, 2016 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Latvian | Multiple | 06 Jun, 2013 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | English | Multiple | 03 Jun, 2013 | 678.2 KB | |
| Data sheet | Return temperature limiter type FJVR | Serbian | Multiple | 04 Nov, 2009 | 589.5 KB | |
| Data sheet | Return temperature limiter type FJVR | German | Multiple | 31 Aug, 2020 | 1.4 MB | |
| Data sheet | Return temperature limiter type FJVR | Swedish | Multiple | 06 Jun, 2013 | 995.8 KB | |
| Data sheet | Return temperature limiter type FJVR | Czech | Multiple | 06 Jun, 2013 | 1.1 MB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Latvian | Multiple | 31 Aug, 2010 | 708.3 KB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | English | Multiple | 04 May, 2011 | 8.8 MB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Romanian, Moldavian, Moldovan | Multiple | 15 Jul, 2015 | 501.2 KB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Lithuanian | Multiple | 19 May, 2016 | 306.2 KB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Estonian | Multiple | 07 Nov, 2016 | 218.3 KB |
Related products
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Data sheet | Adapters for thermostatic sensors | German | Multiple | 22 Jan, 2024 | 420.5 KB | |
| Data sheet | Adapters for thermostatic sensors | English | Multiple | 31 Jan, 2024 | 394.6 KB | |
| Data sheet | Adapters for thermostatic sensors | Lithuanian | Multiple | 31 Jan, 2024 | 416.6 KB | |
| Data sheet | Adapters for thermostatic sensors | Latvian | Multiple | 31 Jan, 2024 | 418.4 KB | |
| Data sheet | Éléments thermostatiques RAE | French | Multiple | 30 Jan, 2026 | 7.5 MB | |
| Data sheet | FJVR | Ukrainian | Ukraine | 23 Dec, 2021 | 204.2 KB | |
| Data sheet | RAE thermostatic sensors | Czech | Multiple | 04 Feb, 2026 | 1.8 MB | |
| Data sheet | RAE thermostatic sensors | English | Multiple | 07 Aug, 2014 | 1.3 MB | |
| Data sheet | RAE thermostatic sensors | Romanian, Moldavian, Moldovan | Multiple | 04 Feb, 2026 | 1.8 MB | |
| Data sheet | RAE thermostatic sensors | Dutch, Flemish | Multiple | 04 Feb, 2026 | 1.5 MB | |
| Data sheet | RAE thermostatic sensors | Hungarian | Multiple | 04 Feb, 2026 | 1.7 MB | |
| Data sheet | RAE thermostatic sensors | Spanish, Castilian | Multiple | 04 Feb, 2026 | 1.6 MB | |
| Data sheet | RAE thermostatic sensors | Italian | Multiple | 04 Feb, 2026 | 886.9 KB | |
| Data sheet | RAE thermostatic sensors | German | Multiple | 29 Jan, 2026 | 1.9 MB | |
| Data sheet | RAE thermostatic sensors | Latvian | Latvia | 04 Feb, 2026 | 1.7 MB | |
| Brochure | RAS-D2 Sales Leaflet | English | United Kingdom | 10 Sept, 2014 | 580.8 KB | |
| Data sheet | Return temperature limiter type FJVR | Danish | Multiple | 03 Jun, 2013 | 991.4 KB | |
| Data sheet | Return temperature limiter type FJVR | Lithuanian | Multiple | 06 Jun, 2013 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Romanian, Moldavian, Moldovan | Multiple | 19 Jan, 2016 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Slovak | Multiple | 19 Jan, 2016 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Polish | Multiple | 03 Jan, 2016 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | Latvian | Multiple | 06 Jun, 2013 | 1.0 MB | |
| Data sheet | Return temperature limiter type FJVR | English | Multiple | 03 Jun, 2013 | 678.2 KB | |
| Data sheet | Return temperature limiter type FJVR | Serbian | Multiple | 04 Nov, 2009 | 589.5 KB | |
| Data sheet | Return temperature limiter type FJVR | German | Multiple | 31 Aug, 2020 | 1.4 MB | |
| Data sheet | Return temperature limiter type FJVR | Swedish | Multiple | 06 Jun, 2013 | 995.8 KB | |
| Data sheet | Return temperature limiter type FJVR | Czech | Multiple | 06 Jun, 2013 | 1.1 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Slovenian | Slovenia | 16 Jan, 2025 | 9.4 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Polish | Poland | 12 Dec, 2023 | 2.9 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Hungarian | Hungary | 11 Feb, 2025 | 52.4 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Czech | Czech Republic | 11 Feb, 2025 | 52.5 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Romanian, Moldavian, Moldovan | Romania | 11 Feb, 2025 | 52.5 MB | |
| Case story | Save energy and money with AI and dynamic balancing | English | Multiple | 03 Oct, 2023 | 2.3 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Swedish | Sweden | 02 Jan, 2024 | 2.9 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Serbian | Serbia | 16 Jan, 2025 | 9.4 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Ukrainian | Ukraine | 11 Feb, 2025 | 52.5 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Bulgarian | Bulgaria | 11 Feb, 2025 | 52.5 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Finnish | Finland | 06 Nov, 2023 | 2.8 MB | |
| Case story | Save energy and money with AI and dynamic balancing | Croatian | Croatia | 16 Jan, 2025 | 9.3 MB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Latvian | Multiple | 31 Aug, 2010 | 708.3 KB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | English | Multiple | 04 May, 2011 | 8.8 MB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Romanian, Moldavian, Moldovan | Multiple | 15 Jul, 2015 | 501.2 KB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Lithuanian | Multiple | 19 May, 2016 | 306.2 KB | |
| Data sheet | Thermostatic Sensors RAS-C & RAS-CK | Estonian | Multiple | 07 Nov, 2016 | 218.3 KB |
Environmental Product Declaration (EPD) Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Product Environmental Information - BI | EPD Aveo and Aero radiator thermostat, BIS | English | Multiple | 13 Apr, 2023 | 2.6 MB | |
| Product Environmental Information - BI | EPD Aveo and Aero radiator thermostat, RS | English | Multiple | 13 Apr, 2023 | 2.6 MB | |
| Product Environmental Information - BI | EPD for REACT, REDIA and REGUS radiator sensors | English | Multiple | 06 Mar, 2024 | 3.3 MB |

Interested in more tips and advice?
From simple or more advanced upgrades to smarter heating of your home, Danfoss products and solutions can help you take control of your heat consumption — whatever your heating bill is up against.
Learn more
