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Last seen: Aug 1, 2026
It the last cold spell, there was a thin layer of ice under the HP (about 3mm thick). Based on my measurement that each defrost cycle produces 1 litr...
@jamespa As you can see from the picture there is about 4 inches between the HP and the plinth. It looks like the 2 holes are just holes in the ...
Water comes out of 2 holes in the bottom of the heat pump. One in the middle and one to one side. There is no pipe.
@jamespa The heat pump sits on a level concrete plinth. There is a black Acro drain against the wall, but being a level plinth its not effective. ...
@jamespa Yes water from the HP does tend to collect under the unit. There is a drain but its not effective. I will send a picture later. The no...
Yes its on at 80%.
@sim0n0 It would be very useful if you could tell us more about your experience.
JamesPa I know these surveys are not the most accurate. From the Energy Performance Report From the Energy Survey The building...
From the Display and my temp probes. HP is in start up, been on for about 30 mins. Left: Twi. Middle: Two. Right: Return from underfloor
@jamespa I have not been in that area before, not my area of comfort, (don't like playing in case I break something. Will have a look.
Heating only just going on today (4:30pm), been off since last night (my intervention as we are too hot). Outside it's 13C here. Only reason for putt...
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Degrees of Separation
Latest Posts
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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 , 2 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 , 23 hours 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: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 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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