“Chalmor’s eTRV gave us a 30% energy saving within the first year of installation, providing a 1 year return on investment.” 


eTRV+ is an award winning, British made programmable radiator valve. It has been proven to cut energy bills by up to 30% by only heating the rooms that are in use. 

eTRV+ Saves energy by:

■ Heating only the rooms you are using: Eliminating wasted heating in empty rooms.

■ Keeping temperature consistent: Preventing overheating.  By regulating temperature, room users will no longer need to use fans or heaters and air-conditioning will not switch on to cool overheated rooms.

■ Working in harmony with the environment: For example, turning the heating down to allow natural heat from the sun to warm the room.

■ Minimising heat loss: Accommodating human interaction, for example, turning the heating down to prevent heat loss when a window has been opened.

■ Reducing system load: eTRV+ works to provide system balance and reduce whole system load, which will in turn reduce energy consumption by variable speed pumps and boilers.

eTRV+ Features: 

■ Patented dual sensors: provides market leading accuracy

■ Open window feature: if a window is opened, eTRV+ reacts quickly to this sudden temperature change to minimise heat loss 

PAIR Occupancy Sensor: this optional extra allows heating to be turned on or off according to occupancy, further enhancing energy savings. Click to download the datasheet here. 

Valve exercise function: runs once a week to prevent valve sticking, reducing maintenance call outs. 

Boost function: push the button to boost heating for an hour, ensuring users will never be cold. 

 Security kit: security collar, secure screws and lock prevent twisting, tamper or removal.

Handset for easy programming (or, use Chalmor’s pre-programming service) 


Communicating eTRV+

We have developed a suite of tools to help building managers communicate eTRV+. Click here to see an example developed for student accommodation.  For more examples, or to discuss your specific needs, contact for more information.


Want to buy?

Contact the team

Product Catalogues

Click to download

Copyright © 2005-2015 Chalmor All rights reserved
Registered Office: 4 Albert Road Industrial Estate Luton LU1 3QF