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Last seen: Nov 3, 2025
@editor we'll have to see. I am tracking the figures day by day - but its still so mild. I'm all for a mild winter and low power costs, but it gives n...
Call and ye shall be heard. If its anything like mine - big IF - then you first unlock the controller and go to MENU FOR SERVICEMAN - CODE 234 ...
Got a little warm in the house today - even my wife said so! So it must be true. I've adjusted the curve to 50@-4 and 25@16 this should be good enou...
From what I've read, you need a fairly large (and very tall) turbine for it to make any financial sense. Small scale turbines just aren't great based ...
@mike-patrick I am in the view of everyone else here. You should do away with all the timed heating and do the whole house. If you zone it there is a ...
@kev-m mine is measured in the unit. I can see exactly what it's current flow rate is on the controller and the unit measures heat delivered in its ap...
@kev-m I am not 100% sure you for you. But as long as you know the flow rate and the temperature you know the heat in KW. It takes 1W to heat 1cm3 of ...
Today seems basically perfect in terms of heating. It's pretty much been a constant 21° in the house with a heating COP of 4.4. so far we've used 12kw...
@rv3 this seems to be over double my Watts/m2 (30000/224 = 133w/m2) of power to heat your home. So first stop is weather comp to lower your temps. I'm...
@kev-m looks like it's 68w/m2 (11,000w/160m2) then, basically the same as our detached house (which was a bungalow originally). So we have very compar...
@derek-m by tracking your own power use vs ambient you'll be able to create your own heating curve. You could just use correlation - I'll see if I can...
@derek-m based on 13 degrees ambient I should have needed (delivered heat) 92kw (3.85kw/hr) yesterday to maintain temperature. I used 54kw at an avera...
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Latest Posts
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Hi, sorry that I have been absent for a while. I'd like...
By baroquebank , 2 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 6 hours ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 1 day ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
D'oh - of course. I shouldn't post before my brain is f...
By Old_Scientist , 1 day ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 1 day ago
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 1 day ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 1 day ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 2 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 2 days ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 3 days ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 3 days ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 4 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 4 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 5 days ago



