Last seen: Sep 12, 2025
Of course I am sceptical of heat loss calculators - after all, they are classic whatiffery models! What if the walls are made of this and are that thi...
I'm not sure they all are. The hallmark, at least on my system, of a defrost cycle is the LWT falls below the RWT (if you think about it, it does make...
@harriup - thanks, especially for posting the charts. We now have data from three installations, yours mine and @kev-m's, and they all show some form ...
I wasn't suggesting it doesn't match demand in that quote, it fact the opposite, it does match demand in the conditions I was talking about. However, ...
Here it is 24 hours from noon yesterday to noon today:
Will post the data after I have had some lunch.
My point is we are not in these conditions, warm house in mild conditions, where we know about and expect cycling as the only way further to modulate ...
It's not on a graph, it's in the raw data, which appear to suggest my heat pump spends most of it's time running at the 'min' capacity level, even whe...
Certainly, or it could just be my Midea unit. The problem is that unless and until we have more data, we just don't know. I'm hoping others who coll...
I can't actually find any of these settings in the Midea Engineering Data manual. There is something called dT1SH, which 'sets the temperature differe...
Last night it was on Weather Compensation, no setback.
Well, I will have one last attempt. Most of your theory doesn't fit the data. In the most recent chart I posted, which clearly shows cycling, the OAT ...
Latest Posts
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RE: Humming sound on new install.
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By AllyFish , 55 minutes ago
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Vat free applies to supply and install only no DIY. &...
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Funny story Graham, when I started looking to ...
By DREI , 10 hours ago
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RE: Buffers, hot water and cooling
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RE: Failing heat pump system - seeking thoughts on a rebuild
I realise im overdue an update on my situation. first...
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RE: Replacing Worcester oil boiler with an ASHP
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A week later, I'm finally picking up this comment... ...
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We keep all our TRVs fully open using the whole house a...
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I am pleased to say at 4pm today we have added another ...
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RE: Renewables & Heat Pumps in the News
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By ASHP-BOBBA , 3 days ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
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RE: Anyone still weathering it out with Agile?
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The size of DHW tank affects the anti-legionella cycle....
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@scalextrix Name plate capacity
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RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
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