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My radiators have Danfoss TRVs fitted and I'm replacing them with Tado smart TRVs. There's a wee arrow on the radiator valve that from what I can see on Danfoss in structions should be set to the direction of flow. At present most of the heaters are set between both arrows. Is this correct or...

I have an Ecodan air source pre-plumbed cylinder and I need to isolate the hot water to remove a bath. I can't see a shut off valve. How do I do it ?

My mother has an air source heating system installed by the McInnes Group in Inverness under the Warm Works scheme and its a disaster. There's a leak they can't find and much of the pipework under the floor has not been insulated as such over a thousand pounds of new flooring has to be lifted...

I had an Ecodan air source system installed in November. The red expansion vessel shows zero pressure all the time, no idea when this started happening. The hot water is fine but two of the radiators only get warm at the bottom. When the water heater comes on the grundfos pump goes off i.e. the...