Last seen: May 29, 2025
@heacol Thanks, mate.
@robs Thanks for this. The statement about 8C was not mine. It came from a Brendon quote. The flow rate shown is the current one. Are you saying that...
@heacol I am sorry that this provoked such a reaction. Misinformation applies to me as well so I did warn you. I never made any definitive statements...
@jamespa @heacol Beware disinformation on this forum. I took some time out to verify the statement made about all the top performing heat pumps on...
@jamespa For the sake of clarity, in my previous response I ignored the house heat requirement at 15C OAT for a 10kW load at design temperature. The ...
@jamespa So, it seems that we have an empirical answer to your question rather than an engineering one. Therefore, from this input and context, I ded...
@jamespa You should best address this question to Brendon. I would also be keen for more clarification as it is fairly fundamental. I am not an insta...
@jamespa For a fixed pump in question on open loop, dT could be <2C at 15C. Below is another view on the topic with which I concur.
@jamespa Let me throw my hat into the ring on this one. If one accepts that a delta-T of 5C is required for correct operation of a heat pump, then he...
@jamespa @RobS. You are missing the point here. Part L states that EVERY room should have a thermostat to control the heat output. Practically then, i...
@RobS Don’t understand the logic here. If a thermostat shuts off a zone, its flow stops therefore the overall flow is reduced i.e. flow varies with st...
@ubert767 You may find this useful as well.
Latest Posts
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RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
@topher you’re more than welcome to, yes. I’ll send you...
By Mars , 7 hours ago
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RE: Fitting new shower valve ..........
I’ve never taken a chance when fiddling and changing ou...
By Mars , 7 hours ago
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RE: Help me keep the faith with my air source heat pump installation
@adamk what a shambles. Can you share some pics of the ...
By Mars , 8 hours ago
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You should contact the council and report the unsatisfa...
By JamesPa , 11 hours ago
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RE: Replacing Refrigerant on Mitsubishi Heat Pump
So the manual is correct and looks fine to me, to abbre...
By ASHP-BOBBA , 18 hours ago
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RE: Benefits of an extra horizontal loop for GSHP
I would deffo install an additional slinky run, especia...
By Transparent , 19 hours ago
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RE: Say hello and introduce yourself
@editor fab - thanks Mars, and keep up the great work o...
By normpang , 20 hours ago
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RE: Compressor and Evaporator Stratification
@trebor12345 So I think the 1st zigzag section shows so...
By ASHP-BOBBA , 1 day ago
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RE: Is this just haze or something more?
@majordennisbloodnok I was giving a talk to primary sch...
By Toodles , 2 days ago
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RE: Tesla Powerwall – More of a ‘Luxury’ Than an ROI Winner!
We had our Tesla Powerwall 3 (and Gateway) installed ea...
By Old_Scientist , 2 days ago
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Indeed. With a battery its presumably the battery con...
By JamesPa , 2 days ago
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RE: No-code, plug-and-play monitoring for your heat pump
To update an ESP device using ESPHome in Home Assistant...
By Grantmethestrength , 3 days ago
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RE: The good, the bad and the not that great – my heat pump installation
Said I would pop back with a update. Only Mr Jesus h...
By Burtis , 5 days ago
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RE: Buffers, hot water and cooling
Thats presumably heat pump DT, what about radiator DT a...
By JamesPa , 5 days ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Exactly the same here. We now have 13.5kWh ...
By Old_Scientist , 6 days ago
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RE: Wood burner with ASHP - direct air?
This depends on the size of your wood burner and size/t...
By Lucia , 6 days ago
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RE: Difficult positioning of air source heat pump
@rikiarn It's a not a buffer it's a volumiser which is ...
By Lucia , 6 days ago
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RE: Is your heat pump insured?
To make things clear, lots of insurance companies cover...
By Lucia , 7 days ago
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RE: Boxt Heat Pump Installation Experience
@adrian any updates since installation? How is it perfo...
By Ashfp , 7 days ago
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@seatonian got your email. Will connect you with a reco...
By Mars , 1 week ago
