
Sam Sandhu
Hi Simon I would recommend that you have Danfoss thermostatic valves installed. They are around £12 each. Labour price for 6 valves will be around £90 material and £200 labour. It is vitally important that the installer adds an inhibitor chemical after the trvs are installed. The labour price may seem a bit high but it is not a very easy job as sometimes there are issues with airlocks in this type of system as it is gravity fed fully pumped and not pressurised. May be worth considering installing a magnetic filter at the same time as the trvs are installed. Hope this helps. Sam (eps)