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Last seen: Aug 1, 2026
The house only requires 14watts/m2. So at -2C I only require 2.7kwh. The HP is a 7kw machine. (forgive me if have some of the annotations incorrect)...
The Thermal Off is where the temperature into the heat exchanger is too high and it shuts down because the water is too warm. Others would call this ...
Thank you. That's an excellent find. As you can probably see I know nothing about the mechanics of how HP work. Looking at the diagram how many diff...
Thank you this is very helpful. There is a lot to take in. I have the heating on today and have been doing videos of the Live View. The funny thin...
File received thank you.
I have tried the DT mode and it does seem to be better with this setting. The Gundfros UPM3 is current in constant pressure setting 3 (max). When t...
UFH is mainly 200mm. Screed - 17mm Ambi Tak. Mainly engineered wood and carpet and tiles.Grundfos UPM3 (K) in constant pressure mode. Switched on b...
It has taken me a while to get my head around it, plus the warmer temperatures to prove it. I have tried to explain the situation to Hitachi, but they...
Thank you all for your help, this has been a learning experience. So in summary. My heat pump is oversized, this causes Thermal Off’s or short cycle...
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Degrees of Separation
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 , 5 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
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