1. pappoo

    Trv's not working

    Hi all, I just moved into my home and realised that none of the TRVs in the home are working. I turn the valve but the temp isn't adjusting nor will the radiator turn off. I have a hive thermostat which is working fine. The rads do turn based on the timer. But the individual TRVs don't work...
  2. S

    TRV Identification

    Hi all, One of my TRV heads has broken and I only want to replace the head and not the valve. After a quick google I think I will need to use the exact same head to ensure the calibration is correct. It is a Boss with no part number on it and it is quite old so I am hoping that someone can...
  3. B

    Potential problem adding TRVs ?

    Hi... I am currently getting quotes to have my boiler replaced and have been informed that adding TRV's is now mandatory when replacing a boiler, but the engineer seemed to think he might have problems installing them because of how the radiators are fitted (pipes coming out of wall at an angle...
  4. W

    TRV valve Help

    Hi I live in a rental and only two of my radiators have TRV heads. There are valves with no heads I am hoping someone will recognise what they are and I can just buy a head and not a whole new valve If anyone can help that would be amazing
  5. C

    Compatible TRV heads for ancient British Gas/Celsia TRVs

    Hello, I’m wondering if you clever people can help me track down some compatible TRV heads. I now have three that don’t work. The valves and pins work fine so I was optimistically hoping to be able to just replace the heads. They have British Gas or Celsia branding written on the top and I...
  6. R

    noob question about how water flows through a rad!

    i've recently balanced my system and learned a bit about inlet/outlet flow, TRVs and lockshields, but something is still bugging me. assuming a system is well balanced, and you're using the TRVs on a towel rail, if you set the TRV to 1 (therefore limiting flow) does this mean that the top rung...
  7. S

    Can I turn down the central heating temperature on combi boiler if I have TRVs?

    Hi, I've got a combi boiler. I was thinking of turning down the temperature of the heating on the boiler (i.e. on the boiler itself not the temperature on the thermostat). Reading up on this it sounds like setting this as low as possible is the best option in terms of reducing gas usage - to try...
  8. F

    Looking for advice on setting up bypass radiators

    I was wondering what an efficient way of setting up bypass radiators is? I have 9 rads in total, including 2 bathroom towel radiators - the non-bathroom ones are all fitted with a Tado SRV. My boiler (Vitodens 100-W B1KF) will provide a min output of 3.2kw when heating. So I'm assuming a bypass...
  9. eveares

    Hive Thermostatic Radiator Valve Won't manually change!?

    I have a problem with one of my new Hive Heating thermostatic radiator valves that I got last month, it has stopped responding to manual temperature changes via the valve it's self, but the valve still wakes up when you go to manually adjust it as shown in the video. Have I accidentally enabled...
  10. eveares

    Can you group Hive TRV's together where there is more than one radiator in a room?

    Hi all, for a long time I have just had three Hive TRV's. One in my bedroom, one in my bathroom and one in the spare bedroom. I have just installed 6 more Hive TRV's for the remaining radiators in the house (except the main bathroom rad what intentionally does not have a TRV) and wanted to know...
  11. R

    Boss TRV replace to Smart TRV zigbee generic brand

    Hi Everyone, I wondered if anyone might be able to help or throw some light on this. I thought this was going to be a really simple project, replace my existing TRV heads for a smart home TRV one - looks simple enough, unscrew and then screw on the new, they even supply mutlple adaptors to...
  12. R

    What make of TRV valve

    Hi, could anyone tell me what make of trv valve this is from the photos? The threaded area is 28mm. Thanks
  13. C

    Balancing a system with lock shield on outlet

    I need some help, having real difficulty balancing my radiators. Got modern slim rads upstairs, columns downstairs. Downstairs the rads are all on the right way. Upstairs, TRVs and lock shields are mostly on the wrong way. I understand they are bidirectional, but when trying to balance the...
  14. M

    Adding Drayton Wiser TRVs to a NEST setup

    Hi, Hoping someone can help as I have looked everywhere without success. My setup... I have a fairly new NEST setup that controls hot water and central heating from a Valliant ECOtek plus. I have a megaflow in the loft (probably not relevant). All radiators are on a single circuit. What I'm...
  15. C

    Replacing old rads on 10mm pipes with new slightly smaller rads

    Hi all All of my TRVs are very old looking and don’t seem to work properly, the temp is either hot or cold despite what number the TRV is set to. My original plan was to replace all of the TRVs but my understanding is that for the hassle of changing them all I might as well replace the rads as...
  16. P

    Re-fixing radiator to wall

    Hi there, I have a radiator that was not properly fixed to the wall and is falling away. It is a cast iron, but not too tall. It has HB Signature Thermostatic TRV valve and lockend. I turned the TRV down to the frost symbol and using a screwdriver, turned off the lockend (assuming that a...
  17. C

    Which smart thermostat for Vaillant Ecotec 831 plus?

    I’ll try to keep this as short as possible! Basically the timer has died on my Ecotec plus 831 combi and rather than just replace it with similar I was thinking now maybe the time to go smart and get something that can help my heating system run more economically as we’re off grid so run off...
  18. F

    Pros / Cons of programmable radiator valves

    Hi, We are getting a new Ideal Boiler (not combi) fitted into a 3 storey town house. It has a 2 zone system - split for downstairs / 2 upper floors. We have bought 2 Nest thermostats, one for each zone. In the downstairs zone all but the cloakroom rad have existing Myson TRVs. As part of the...
  19. G


    What is fully trv system and does it have room thermostat in circuit?
  20. F

    TRV radiators not controlled by heating timer

    We have just moved into a new house (not new build just new to us) and the heating system seems a mess, or we just are not using it correctly. There is an Ideal Logic+ boiler providing central heating and hot water via a tank. All the downstairs radiators apart from the hall have TRVs on and...