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Last seen: Oct 27, 2026
Silly question but is one of them battery operated and if so has the battery run out? I have a wireless thermostat for my gas boiler. It fails...
@newhouse87 Yes and no (but mostly no). There is a point where cycling is inevitable because the heat pump simply cant turn down low enough to matc...
For what its worth Vaillant R290 heat pumps (I discovered a few weeks ago) are designed to do the legionella cycle in the heat pump only, and appear (...
If you have a modulating pump and a heat pump that modulates it then yes (and if they have been correctly connected which isn't always the case where ...
@newhouse87 well your WC line is 34 at -5 and 25 at 20, so at 7 you expect 25+9*(11/25) = 29. So 30 is just 1C out which is likely well within the h...
Has it just come out of a dhw cycle, which would be at a much higher ft (and thus may take a while to cool down)?
Unfortunately I didn't resolve it. #value cells include E1-AA1, D14, 16-18,20,23,24,31,32,36... but opening it in Libre office calc seems to have f...
About 50% of the play sheet. I'm guessing they all rely on or derive from one 'problem' cell. I have an old version of Excel (2003) it could be tha...
@newhouse87 OK sounds more reasonable then, you are most likely heating the slab. As @derek-m says there is no 'right' figure, it depends on the hous...
I downloaded your modelling tool but there are lots of '#value' in the playroom. Is there something I need to dial in to start it working?
An average 2kW consumption (if that is what it is) at this time of year is a lot. You should be getting a COP of 4 ish or more, which means that the ...
One vital question I should have asked. Is '2kwh per hour' energy consumed (as measured eg by your electricity meter) or energy delivered (as measure...
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
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RE: Aerotherm and weather compensation
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RE: Electrical works for air to air heat pump
agree with above. I have not had extra costs added wh...
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Good to hear that you found a solution. Absolutely a...
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RE: Are there any comparisons of DHW heat stores around?
@sarahemmm I have done things the opposite way round I ...
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RE: How will removing the standing charge on gas bills benefit heat pumps?
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RE: Say hello and introduce yourself
@e-a-west as the good Major said, welcome to the forums...
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