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Last seen: Aug 5, 2026
@jamespa I followed your advice and the room temperature drifted up slightly to around 20.5C, even hitting 20.7C at one point. I am not sure that t...
@paultheheating I wonder if you are being a bit pessimistic. A friend of mine moved from an oil boiler to a heat pump. Oil is so expensive compared ...
@allyfish thanks for your observations. At the moment, I suspect that my upstairs radiators are receiving too much water flow even without the +/-10%...
@giryan I understand your dilemma. I was in a similar position earlier in the year and was certainly nervous about installing a heat pump. However, ...
Well you certainly are a brave polar bear! A few comments: I presume you have insulated the remainder of the pipe work, since you took the fir...
We are on the Intelligent Octopus Go tariff. We installed a heat pump in the summer and our solar panel and battery installation is almost complete. ...
@editor Here are my suggested questions: In your designs, how do you trade off the up-front cost of the system versus ongoing running costs? What...
It may be cycling on and off a lot. Do you have any graphs of the compressor frequency, water outlet/inlet temperature, other relevant data... over s...
Some photos might help as well.
@jamespa I agree that people should use measurements of the performance of the existing system as input to their heat loss estimate. It makes sense t...
@jords it sounds as though you have been having a frustrating time. I had some similar experiences. Here are a few pointers: All installers have...
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Degrees of Separation
Latest Posts
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RE: How Accurate Is My DIY Heat Loss Calculation?
@editor Thanks Mars, I have been enjoying playing with ...
By kilgorexv , 17 minutes ago
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New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
I am feeling baffled and worried:We are having a an Aro...
By GutoFfowc , 3 hours 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 , 6 hours ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 6 hours ago
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RE: Questions about A2A for heating as well as cooling
@donciccio I would suggest that you take a "fabric-fi...
By Rob of York , 6 hours 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 , 23 hours 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 , 2 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 , 2 days ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 2 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 2 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 2 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 , 3 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 6 days ago
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