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.

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.

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.


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:

the 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*.

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.*

* 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

support how you need it

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 iconFind 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.