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Last seen: Aug 23, 2026
OK I think you have two problems, excess cycling, and poor cop at moderate oat (outside air temperature). The first may explain the second, but mo...
Sorry, im not a tradesman but have spent far to much time on heat pumps so have become blasé about the TLAs (three letter acronymns) oat = outside a...
Not sure you are any worse off than those like me who live close to London when it comes to flexible installers. Many including me report similar pro...
I wouldn't have thought so unless It's residual heat from when they were supposed to be on or It's very cold and frost protection has kicked i...
Can you provide some more info? What leads you to believe its oversized. If its cycling, how often, at what oat? Roughly what's the system volume ...
Absolutely nothing at all to stop any ashp being used with a vented tank except that I'm not sure anyone advertises a vented tank with a large enough ...
Agreed. With two or three isolating valves it can even be done reversibly. Basically bypass the buffer tank on the flow, bypass the secondary pump,...
Before answering the question I think its worth rehearsing the theory of how buffer tanks are supposed to work. Firstly as @derek-m says any tempera...
Unless your system volume is very low it's likely, given those those figures, that your buffer tank is costing you 10%+ in efficiency or thereabouts, ...
@kev-m It's good to know that this is possible. I suspect, however, that the people best able to devise a central heating control system don't work ...
My post on the subject a few months back was a crude attempt at just such a model. Basically it considered the house as a single mass, leant heavily...
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