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Last seen: Oct 20, 2026
Before answering that, what do you feel is the problem which you would solve by reverting. Earlier on you seemed to have made some progress albeit th...
Ah that makes sense (I thought you meant an OAT of 15C). It confirms that the problem is insufficient water available from the system for defrost. ...
It sounds like it has insufficient system volume for the defrost (energy for the defrost comes from the hot water in the system). This problem is sol...
@skidoc I dont think there is a particular reason to argue for a split system and it would almost certainly require planning permission. Its also un...
Mine did that also, I wouldn't be surprised if its common/written into the MCS contract template. You get about 3 emails from the BUS people either ...
Sorry to hear that. I have the 7kW Vaillant and, apart from an unfortunate increase in noise when its defrosting, its been excellent. Of course if th...
Quite possibly not, unfortunately. Houses have a significant heat capacity (thermal mass) which means that measurements over short periods of time c...
Hi Welcome to the forum. Please feel free to ask any questions. In order to help can you give a bit more detail about how it locks up, what is ha...
What power do you need at what FT? will thio one do/p> otherwise it looks like a kickspace heater is what you need
Thats better insulated than my 1930s house of about the same size, apart from the loft which is easily and cheaply upgraded (so I would recommend doin...
You need an extra pump that pumps the water from the DHW tank through the heat exchanger which is external to the DHW tank. The other side of the PGE...
I look forward to the further info and will do my best to help. The thing about heating is that the physics is extremely simple indeed but the a...
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