Last seen: Nov 30, 2025
Yes, this! Thermal mass is key. Ancient civilisations knew a thing or two about using solar reflecting lighter buildings, natural ventilation for cool...
@pie_eater I don't know the Daikin Madoka product, but having had a quick look on-line, it seems it's a simple binary [digital on/off] thermostat comp...
Great to know you've made good progress @martyj76, and ruled the pump out. The two port valve could well be faulty, it might be a fault with the valve...
@pie_eater different manufacturers have differing accuracies of COP data, some are just considering the refrigeration compressor, some are total unit ...
Beware the OEM COP 'vanity data' - most if not all heat pump controllers give very flattering [for flattering read exaggerated] COP data. True measure...
With the ASHP installed in a neighbouring street it's going to struggle with heat loss & hydraulic resistance. Clearly no-one had done any proper ...
Hi there @bajj, you've cracked it I think with setting parameter 21 41 to 2degC. UFH will have a very slow hysteresis response as the mass of the floo...
This is strange @martyj76, if the unit was installed by a Grant G1 installer, and has been annually serviced by a Grant G1 service engineer, it will b...
E.ON has launched their Cosy Octopus copy tariff product, 'E.ON Next Pumped' with 2x3hr low rate periods, 4am-7am & 1pm-4pm, just like the origina...
@wanttobegreen sure, 2x6.5kW. Which gives a useable storage capacity of about 12kW. For the majority of the winter we can charge 9kW into the batterie...
Andy's assertion that anyone with batteries can power their home in a storm [implying they can draw from the batteries when the grid is out] betrays h...
@wanttobegreen as per Toodles' advice. The Solar PV batteries in winter coupled with Cosy electricity tariff are a game changer. 85% of our electricit...
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RE: Commencing on an ASHP Installation Process
@sheriff-fatman It's also worth highlighting that th...
By Lucia , 3 minutes ago
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RE: Electricity price predictions
😀 Thanks, today seems a particularly good day...
By Batpred , 8 minutes ago
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RE: Help…my NIBE heat pump has faulted again!
@Fiona, James is right. The unit should still be under ...
By Mars , 36 minutes ago
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RE: Hitachi Yutaki SCombi Heat Pump - Owners
. It does but, unless there has been a firmware updat...
By JamesPa , 2 hours ago
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RE: Replacing my 18 month old Hitachi Yutaki ASHP
@majordennisbloodnok Tibby or not Tibby - anyone seen m...
By Toodles , 3 hours ago
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RE: Solar panels on side of house to heat water
Not a problem, @toodles; introducing another option bac...
By Majordennisbloodnok , 4 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Yesterday it was chilly and the cosy6 had a Cop of 4.3 ...
By AgentGeorge , 4 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Same here! This month 187kw.
By Andris , 5 hours ago
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RE: Grant Aerona circulation/system pump staying on
@mikefl thanks, so to check is your parameter 4200 set ...
By damonc , 5 hours ago
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Are Water Companies Delivering Bricks?!
Please look away now if you don’t wish to lose several ...
By Toodles , 5 hours ago
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@jamespa Ah, they do indeed do firmware updates very oc...
By Toodles , 10 hours ago
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I’m trying to rule out a fault, could owners of above c...
By Unsure , 10 hours ago
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RE: Jokes and fun posts about heat pumps and renewables
And I thought I was the one with the taxi on speed dial...
By Majordennisbloodnok , 23 hours ago
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RE: Heat Pump Training vs. Real-World Installation
Congratulations on passing the course. The observation...
By Max Abbey , 1 day ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
The problem I see with A2A (and I'm interested if there...
By Temperature_Gradient , 1 day ago
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RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt
@temperature_gradient I specifically explained to my po...
By Toodles , 1 day ago
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RE: Grant Aerona Short Cycling
@damonc I was refering to the 'standard' energy sticker...
By MikeFl , 1 day ago
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
@hcas where do I find Havenwise Support? On...
By Morgan , 2 days ago
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RE: Should Our Water Circulation Pump Be Configured to Run All The Time?
We recently (Aug 25) had a Grant Aeorana 3 installed un...
By GA3_USR , 2 days ago
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RE: Configuring third party dongle for Ecodan local control
Thanks, @sheriff-fatman. Happy for you to search any po...
By Majordennisbloodnok , 2 days ago


