Last seen: Sep 12, 2025
DT might actually be the harder one, depending on how and where you measure it (and bearing in mind I have a PHE). The flow rate has two things that m...
If this is correct, then this is compressorgate! Seriously, though, I thought the engineering data was supposed to include the effects of defrost cycl...
Yes, on the left hand side it peaks at just under 8kWh (which is 8kW over that hour, unless I've totally lost the plot). Clearly this is much closer t...
This chart shows the heat pump not quite meeting demand on the left hand side where the OAT is around zero, leaving the IAT below design IAT (19 degre...
@jamespa - very interesting. The degree of correlation in your second chart is impressive. I think I get the idea, the fabric of the house acts like a...
Delighted to be of assistance. Please note I still charge consultations fees in guineas, never could get my head round that decimal voodoo.
@derek-m - only the madman judges his own sense of humour. You really do need to take those meds.
Having boldly stated my heat pump flow rate is effectively fixed, I thought I had better actually check! It seems it pretty much is, most of the time....
Good points, but I think, at least on a Midea unit, that behaviour is hard wired into the controller. I don't think there is (and am not surprised tha...
@derek-m - I think you need to restart the meds, right now!
Pray tell, what is this magical this?
Having tidied up and double checked my data, here is the last 48 hours, perhaps a useful illustration of how ruinous cold outdoor air temps and associ...
Latest Posts
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@dgclimatecontrol I attach the responses from 2 potenti...
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I didn't want to say that, bus since you have said it n...
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RE: Is a Valliant Inline 6kW heater a BUS buster?
I think so but I don't know for certain. A cascade as ...
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RE: Humming sound on new install.
Sorry, I should also add these checks The ASHP must ...
By ASHP-BOBBA , 4 hours ago
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RE: Midea ASHP – how to set weather compensation
Mostly, I think, but with some caveats. I set the TI...
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RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
I have been working on network resilience for a while. ...
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RE: Buffers, hot water and cooling
@dgclimatecontrol thanks, that's helpful.
By JamesPa , 23 hours ago
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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
@toodles thanks. I was told by the engineer that this h...
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RE: Who’s Caved and Switched the Heating On Already?
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RE: What crazy nonsense are inverter limits and why are they imposed?
A week later, I'm finally picking up this comment... ...
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RE: COP is not the only measure of efficiency
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
To unpack this a little.... 1) how many of us in this...
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@realevil the fans and fan speed / coil size (height, w...
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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?
@toodles I guess it all comes down to import averages. ...
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RE: 300 Liter Tank - Do I have to heat it all?
The size of DHW tank affects the anti-legionella cycle....
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
By HCas , 3 days ago
