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Last seen: Aug 16, 2026
@drew-pa Ive attached the performance estimate Drew, that is all I have. There is no UFH. Also attached are some images of the installation. Other t...
Hi Drew. Thanks for the reply. I’ll post his installation details asap. The work is neatly done and all the radiators were changed as per the insta...
Just to say, that we have managed to set up the unit now. 22C target indoor temperature and a heat curve of 0.6. High internal temp but the wife is a ...
@jwilliams89 Your calculations look good at a glance. With respect to the internal pipe strengtheners, I have tended to use the hep2o ones which are s...
Hi. There isn’t anything wrong with using plastic pipes as long as they meet the needs of the emitters. See this by John Cantor. I’ve used them in my ...
Hi @essgeesee Welcome to the forum. Heat pumps work best without zoning or TRV's turning radiators on and off regularly. The way a lot of us use our...
@misterb lol. That’s exactly my situation too. My battery is huawei, I’ll have a look at the fog star thanks.
@delt I think also the levels of insulation in a house come into play. I corresponded with one user who used the same amount of kWh with a heat pump a...
@misterb thanks. I think that mirrors my thoughts. What you say about bigger batteries is interesting. I have a 5kWh battery, it’s a modular sys...
This is actually quite an interesting problem and highlights the difference between efficiency and cost. Heat pumps are most efficient at low flow ...
@jamespa apologises, I did virtually paraphase everything you said earlier 🤣 @notechknowhow as James mentioned, it might be a good idea to ...
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Degrees of Separation
Latest Posts
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@batpred They offered both, I went with Pro. As an amat...
By baroquebank , 28 minutes 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 , 20 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 , 2 days 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 , 2 days 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 , 2 days 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 , 2 days ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 2 days 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 , 3 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 3 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 , 4 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 , 5 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 5 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 , 6 days ago
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