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Last seen: Jun 26, 2026
@toodles @andris I have been duly pestering OE staff 😉 They said it was a couple of half hourly readings missing. I can't see why they don't have an ...
Same 'ere. Octopus Agile import, Octopus Outgoing Fixed 15p/kWh export. No idea what my average consumption rate on Agile is right now, as Octopus has...
I think you are right, it borrows requirements of IEC 62485 'secondary batteries' - where for older battery chemistry types, Lead acid and NiCd, there...
@derek-m interesting video. Stateside the defrost mode in A2A systems enables direct electric heating of the incoming air to avoid loss of heating fun...
It'll be a fairly standard R290 ASHP internally I think, covers, panels and grilles might be customised. They all come with serial Modbus comms now, f...
Heatmiser Neostats are also used by Grant. Theirs are Grant branded, but identical items. They have up to 3degC adjustable differential if I recall, s...
@guthrie - don't worry. PAS_63100_2024 is not a retrospective standard. Probably the large majority of current BESS installations will not comply, inc...
Hi David, timing between defrosts varies based on outdoor temperature and humidity and how quickly the ice builds up. 30-60 minutes between defrosts i...
A defrost that's taking far too long would suggest a faulty 4-port reversing valve. The valve is a pilot operated solenoid device, common in all rever...
Great stuff - sound like to you a very good plan. EPCs can be notoriously inaccurate. It was only until quite recently the installation of a heat pump...
Always worth insulating the floor from the garage underside if there's reasonable access. If you store much in there, including cars, I would fire pro...
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Degrees of Separation
Latest Posts
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
Volumisers are normally plumbed so that they are in the...
By JamesPa , 3 hours ago
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@toodles possibly. The £9k labour charge for 4-5 days w...
By AndrewJ , 8 hours ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 12 hours ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 1 day ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 1 day ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 1 day ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 1 day ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 2 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 5 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 5 days ago
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 5 days ago
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