The Thera-6 Thermostatic Radiator Valve Head and V200SX Standard Thermosatic Valve are pictured next to text that reads: Continuous flow control for life. Guaranteed.

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The Thera-6 and V2000SX range

Designed to transform the performance, efficiency and reliability of home heating systems, our new range of thermostatic valves and heads offer the one-fits-all solution that stockists, specifiers and installers need.

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Bi-directional flow

The V2000SX valves are designed and tested for a trouble-free operation when mounted in the supply- but also when mounted in the return side. This also allows to flip an external threaded angled valve and install it as an axial valve.

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Extended warranty

The Thera-6 head designed with quality in mind comes with 10 years . And the designed for durability V2000SX range comes with 15 years warranty. That’s pieces of mind for you and your customers.

Features and benefits

Discover what makes the Thera-6 head and the V2000SX valve range truly revolutionary. Built in Europe by a company with over 45 years of TRV manufacturing expertise, this range promises unrivalled style and engineering

Bi-directional flow

Fit the V2000SX valves in the supply or return of the radiator. Both options are possible

One valve for 90% of applications:

V2000SX is perfect for every installation from new builds to retrofit projects

Designed with the at concept:

Just the valve insert needs to be replaced, not the complete valve body – for our V2000 valves back to the year 1974!

Quality products with extended warranty.

We offer 10 years for the Thera-6 range and 15 years for the V2000SX range*.

illustration showing thera-6 thermostatic radiator head being attached to v2000sx standard thermostatic valve

Extended warranty

Built in Europe by a company with over 45 years of manufacturing expertise, we are so confident of the quality of our products that we provide an extended warranty for them.*

Thera-6 thermostatic radiator valve head

The Thera-6 universal-use thermostatic radiator head is amazingly compact and beautifully designed.

Rigorously engineered and tested for durability, making it ideal for residential heating applications
High control accuracy rating, supporting the highest energy efficiency standards of the new EN 215
Premium quality materials, with a 10 year extended warranty on the radiator head.*

V2000SX standard thermostatic valve

The V2000SX thermostatic radiator valve range fits at least 90% of radiator applications, making it ideal for every installation, from new builds to retrofit projects.

Includes a variety of flow rate presets
Tested beyond the requirements of applicable European quality standards with a strong spring and Resideo’s proven double o-ring sealing design
Designed with durability in mind, the V2000SX range has a 15 year extended warranty.*

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* The lifetime is 10 years (Thera-6) / 15 years (V2000SX range) from the product manufacturing date. The guarantee is subject to Resideo's detailed warranty policy and terms of sale

illustration of one red line creating a sketch of a radiator, couch, and lamp. Text reads: Peace of mind for installers and homeowners

Support how you need it

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Live online training webinars

Learn about thermal balancing. Regulations, standards and guidance with our live webinar-based training.

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Try setting app

try set up app icon Find the right presetting for Honeywell Home valves with just a few clicks. Practical assistance for installation technicians - in the office or at the construction site.