Last seen: Sep 25, 2025
A quick and dirty spreadsheet plot of LWT and DHW tank temp, firstly over a few days, and then zoomed in (two hours) over a DHW heating period: ...
@filipe - I think the reason why you haven't received any comments so far might be because you are over-complicating things. COP, for example, is at i...
Another carrot, which I had hoped to include in yesterday's post, but ran out of time, having lost four hours in the morning to the power cut. One o...
Thanks for adding this, good clear explanation. To add a probably superfluous analogy, given an old fashioned telegraph system, the wires and all the ...
This is the route I went down. At this very moment I have my earlier Home Alone with Home Assistant setup (uses a painfully complicated wifi/LAN setup...
It's actually a work in progress type thread, which will ultimately be boiled down to a Beginner's Guide to Heat Pump Monitoring v2 (v1 ended up as Ho...
PS I should perhaps add in that I myself am not immune to redundant word situations, which on rare occasions may spill over into ongoing redundant wor...
I'm sorry, but I still don't understand what that image shows. Frankly, it's verging on dreadful. I guess it is what happens when you try to do things...
@filipe - the problem I am trying to deal with is the lag: at any one reading (all the data is collected in one go once a minute), the energy out has ...
Here is a rather cryptic table of htg and dhw COPs with the amps_in shifted downwards one cell at a time: Shift 3 sort of works initially, but the...
@filipe - this is the key data at the transition time with rather meaningless minute COPs added but they do show how the abberation occurs: At the...
Latest Posts
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RE: Large heat pump options for church building
I should think that a heat loss calculation might be a ...
By Toodles , 32 minutes ago
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RE: Do I just go with the lowest quote for my heat pump?
@jamespa This is a very wise procedure to adhere to to ...
By Toodles , 44 minutes ago
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RE: Say hello and introduce yourself
I've started a topic in the Heating Alternatives sub-fo...
By wully , 2 hours ago
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@toodles Im trying my best but it is getting a tad tedi...
By bontwoody , 2 hours ago
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RE: Samsung Gen 6 - Schedules not working
@old_scientist thanks for trying. I do have a copy of t...
By bontwoody , 4 hours ago
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RE: Seal the Deal: Don't Let Your Heat Pump Leak Energy
Indeed. If the primaries are not big enough to carry th...
By Old_Scientist , 6 hours ago
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RE: DNO export limit problems.
How big is your proposed solar array? I have 7.2kWp a...
By Old_Scientist , 7 hours ago
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RE: Clivet ASHPs and weather compensation
It sounds like weather comp may not be activated. Give ...
By Simon Wardle , 9 hours ago
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RE: Which thermostat should I get (or do I need one?)
OK I've thought some more about this. I think you have...
By JamesPa , 11 hours ago
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RE: Help me keep the faith with my air source heat pump installation
I just looked at mine. My flexis (which run horizontal...
By JamesPa , 11 hours ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Manufacturer: Vaillant Model: Arotherm Plus 7kW Typ...
By MatWin , 22 hours ago
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@papahuhu Sounds as though you need to speak to your in...
By Toodles , 1 day ago
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RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
Signed.
By Morgan , 1 day ago
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I ‘did the math’ for Nov. to the end of April to be on ...
By Toodles , 1 day ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
@tasos automations on Home Assistant so if there is a p...
By benson , 1 day ago
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RE: Sizing - Save me from my headache
Mitsi 8kW has a 6kW variable and 2kW fixed compressor s...
By JamesPa , 2 days ago
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@drei your proposed radiator design looks inadequate to...
By GrahamF , 2 days ago
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RE: Why does an ASHP provide a more comfortable environment than a gas boiler?
Actually, I think the issue is the different rate of he...
By AndrewJ , 2 days ago
