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Last seen: Aug 16, 2026
@robs Wow. That’s quite a difference!
@raiph So if its all in the box, my guess would be it is already using PWM to control the pump. It would be madness not to given that the facility is ...
@raiph I would assume you could manually alter the pump speed, or if it is of a compatible type it can be controlled via Pulse Width Modulation direct...
@raiph So it will be cheaper to heat your domestic hot water overnight if you have a large enough tank to meet your daily needs. I dont heat my DHW us...
So just to keep this thread updated, here is the latest months data. October has been mild and the potential savings of having a second battery are on...
@cathoderay I see what you mean. I am able to show flow rate on the graph and it seems the pump gives a burst (for 2 minutes) when the heat pump goes ...
@cathoderay Here is a zoomed in image. The water loses 7 C in just under 3 hours. All my pipework runs through the loft of my bungalow and has standar...
The flow and return temperatures are measured by inline temperature probes from my heat meter, so Im pretty sure they are giving an accurate picture. ...
@hcas If you mean via the MIM-B19N board, then no. I just use the Samsung controller so Im stuck with my normal WC curve. I suppose the good news is t...
So I do have a stand alone thermometer in the lounge and it looks like the preheat just stops the drop in temperature and leaves it slightly higher th...
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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 , 3 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: 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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