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Last seen: Sep 19, 2024
@tufty I suspect the main item that would likely be damaged would the the condenser, which is a Plate Heat Exchanger (PHE). Whilst I don't think tha...
No. But not having a wood burner may have something to do with the decision. For some reason 'she who must be obeyed' frowns upon me trying to build a...
I have no idea how long it will take or the likely cost. I have an A2A heat pump which doesn't require anti-freeze.
@bontwoody There are quite a number of aspects to consider when it comes to the sizing of a heat pump. As James has correctly pointed out, the sta...
@tufty I suppose that this is one of the grey areas, where one would hope that the engineer would at least explain the meaning of the -4, before he ...
Where did you get the data for the Ecodan? According to the manufacturers data at an OAT of -7C, the 11.2kW Ecodan has a capacity of 10.6kW at a LWT o...
@jamespa Hi James, I have now completed some further improvements to the modelling tool. It is now possible to adjust the desired IAT setpoint a...
@crustydoodle The installer is responsible to provide you with a proven functioning system, failure to do so would be a breach of contract. I would ...
From the noise point of view I seem to think that the water pump is being supported by the pipework. The pump should be mounted on a suitable bracket ...
@redzer_irl You could try running the heat pump in fixed LWT mode starting with a low LWT setting and gradually increasing the setting until the des...
@crustydoodle Just to clarify if my understanding is correct. You started the heating system by raising the setting on one or more thermostats. Th...
Yes, the sensors are the thermistors. When I refer to 'good thermal contact', I mean is the thermister either fitted in a suitable pocket or clamped...
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RE: Switch suitable to change between two inverter CT's
It depends An unloaded current transformer can output...
By bobflux , 10 hours ago
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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 , 21 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 , 2 days 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 , 3 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 , 3 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 , 3 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 , 3 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 , 3 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 , 4 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 4 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 , 4 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 , 5 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 , 6 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 6 days ago



