Last seen: Jun 18, 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...
Latest Posts
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RE: Adding battery storage to SolarEdge PV system
@nazuro1041 I am not a grid expert like others, and the...
By ChandyKris , 27 minutes ago
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RE: Surface mount or bury primaries for heat pump installation?
What about those pipes that include conduits for electr...
By tomasmcguinness , 1 hour ago
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RE: Say hello and introduce yourself
Welcome You have already done the most important thin...
By JamesPa , 1 hour ago
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RE: Weather compensated secondary circuits with Biomass
If anyone’s going to know the answer to this it’s @sune...
By Mars , 4 hours ago
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RE: Commencing on an ASHP Installation Process
That outside pipework would concern me. Surely rigid se...
By benson , 15 hours ago
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As I have reported elsewhere we turned on the cooling o...
By downfield , 18 hours ago
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@el3b Hi, sorry to hear that, it is advisable to instal...
By ASHP-BOBBA , 2 days ago
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RE: Difficult positioning of air source heat pump
@rikiarn Out of intrigue, the thread reads as though Ai...
By Sheriff Fatman , 2 days ago
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop
@m1kegibson If you are able to access the service me...
By HarriUp , 2 days ago
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RE: When will heat pumps and install prices come down?
... which of course is impossible because the world mov...
By JamesPa , 2 days ago
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My advice is reject unless they will delete the buffer ...
By JamesPa , 3 days ago
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RE: Battery storage to run Heat Pump.
I would be surprised if the battery chemistry is going ...
By Transparent , 3 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@dowallydrifter OK. I would recommend you read t...
By JamesPa , 4 days ago
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RE: Solar to power Heat Pump for DHW
Wow, how big is your heat pump that it is pulling 6kW d...
By Old_Scientist , 4 days ago
