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Last seen: Sep 16, 2026
The 7kW is (in terms of output) what most manufacturers would call an 8kW (or even 9), so this might just be a marketing exercise. However they are l...
You are of course correct in the short term. If the system (hp, house, rads, pipework) isn't in equilibrium something will heat up until it is, or sh...
Er, it does. It knows the heat loss because it knows LWT, RWT and flow rate. Thats the heat supplied which, if the house is in equilibrium, must equ...
I find it quite challenging to think about, to say the least. The simple model of a house, which we use much of the time, is a monolithic block cha...
That's not necessary so far as I can see. Measuring the current weather tells the heat pump or boiler whats currently happening to the outside of hou...
If you only ever want them at 18C then it would be better simply to turn down the lockshields on these rads. Then you retain the full active system v...
What cylinder do you currently have? There are very likely installers who wont insist on replacing it (eg Heat Geek 'Zero disrupt') BTW I used to t...
There is onl,y one system currently on heatpumpmonitor that is both under 200 sq m and have a measured heat demand of >9kW at the design temperatur...
@glacken With 3 years on this forum, I am immediately suspicious whenever I read a surveyed heat loss greater than about 9kW, unless its for a mansi...
There is essentially no doubt that operating heat pumps on well adjusted weather compensation, is, in the vast majority of cases, the way to go. In s...
For a couple of years b&q sold one, but then stopped I presume because no demand. They are quite popular for narrowboats see eg/p>
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Degrees of Separation
Latest Posts
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RE: Why are ASHP installs so expensive?
@batpred I take your point and, perhaps, your experienc...
By ian33a , 7 hours ago
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RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
By Papahuhu , 1 day ago
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
The Heat geek contract had various get-out clauses with...
By Batpred , 1 day ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I would encourage you to have a conversation ...
By Rob of York , 2 days ago
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RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
By springswood , 2 days ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 2 days ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
If you have a flowmeter and two temperature probes, the...
By bobflux , 2 days ago
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RE: Siting of the external sensor on a heatpump
@jamespa Absolutely. Even if the same mistake was mad...
By Batpred , 2 days ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
In fairness all heating has cost a lot to run in recent...
By JamesPa , 3 days ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 5 days ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 5 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
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