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I had a BAXI Combi boiler fitted last Jan and most of the old servowarm system was booted except for the rads and the existing TRV's. It's increasingly looking like I'm going to have to replace the TRV with a more modern one and if I'm gonna do that I think it would be in my best interest to...

I’m trying to track down some replacement TRV heads for my heating system. This is a fairly old system – over about 15 years of age for sure and the TRV’s are a fairly simple design from my assessment – they appear to use a sprung metal top buffer coupled to a moving double spring-loaded...

thanks for the replies guys - very helpful. As there was never a pressure drop during running of the boiler before I let out all the pressure I can safely assume there isn't an actual leak on the CH circuit - so I'm wondering where the air could come from. So the suggestion of Hydrogen...

Hi - i've searched the forums and found a few answers to my questions but not all so forgive me my inexperience in advance. I've recently had a Baxi Combi 105 HE fitted - about 10 days or so now and the other night noticed excessive clanking and banging from the pipes. I wandered about...