Last seen: Nov 13, 2025
I came across this video: This is the perspective of, shall we call them, 'Big Boiler'. They take the position that they can build hydrogen boil...
It's also worth mentioning that heating in flats is a bit different from houses, because in flats you often have a lot of walls and floors that are he...
Interestingly, I think I figured out that Grant are rebrands of Chofu of Japan - the diagrams in the installation manuals are identical. I'm not fami...
Hi Mark, if you already have a plumbing background I can recommend the training videos from Freedom Heatpumps: Most of what they describe are Monobl...
I too am wondering this question - in this case Grant v Mitsubishi. The installer says Grant 'is the better product' which could be installerspeak fo...
@julianc Absolutely, I'm not really suggesting this as a feasible option for a lot of people. For other thing, the RHI and friends have a list of 'ap...
I posted this on another thread - from Alibaba: 11kW ASHP monobloc - $838 Heat pump water cylinder - $286 Radiator-style fan coil unit - $125 (i...
On costs, I've recently been spending some quality time on Alibaba. Typical examples (clickable links): 11kW ASHP monobloc - $838 Heat pump water...
@derek-m Yes, going for the classic industrial control route is one option. There's a certain merit to hardwiring in valves and sensors and running t...
I can't help but feel this is all a bit primitive. We have a mishmash of control systems all fighting against each other. For example, the heat pump...
@kev-m I haven't tried running rads at 50C as the old oil boiler is very unhappy if the output temp is set below 70C. I'm just curious whether there a...
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RE: One Year Review: Grant 13kW ASHP - A Catalogue of Errors
Welcome to the forums @solenoid. It’s a rough first y...
By Mars , 5 minutes ago
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RE: Electricity price predictions
I think that plan is called net zero! I suppose we wil...
By JamesPa , 8 minutes ago
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RE: Solar panels on side of house to heat water
Thank ou all for comments, just to refocus I am not loo...
By paultheheating , 20 minutes ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@f1p Thanks for the info, good to know
By ThunderMink , 1 hour ago
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@toodles I will do, it can’t go any worse than my last ...
By Grantmethestrength , 16 hours ago
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RE: Configuring third party dongle for Ecodan local control
Yes, it is certainly an advanced feature and quite diff...
By F1p , 17 hours ago
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RE: MELcloud scheduling misbehaviour
@richard24738 We also want hot water for 7:00am showers...
By DavidAlgarve , 17 hours ago
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
@hcas Thanks Henri. I take your point, but feel that wh...
By DavidAlgarve , 22 hours ago
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RE: Replacing my 18 month old Hitachi Yutaki ASHP
The Thermo Off (not Thermal Off) only relates to the la...
By trebor12345 , 22 hours ago
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RE: Flow rate discrepancy between ASHP and manifold
Ok, I think I have got to the bottom of the problem... ...
By AshRolls , 22 hours 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
@editor OVO: 'Sorry, we aren't installing heat pumps in...
By stevettweed , 22 hours ago
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RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
@bash — I also agree, an image based installation is th...
By cathodeRay , 23 hours ago
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RE: Signenergy AI Mode - How long does it take to learn a usage pattern?
@grantmethestrength What I mentioned is just out of ...
By Batpred , 23 hours ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
Very true, that is the standard method (and the one I u...
By cathodeRay , 1 day ago
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RE: Our journey through Octopus tariffs 2020-2025
@tim441 guess "every little helps". I plan to let Sol...
By Batpred , 1 day ago
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RE: Why Millions of UK Homes Struggle With Heat Pumps
If it is combined with the BUS and they make it all goo...
By Batpred , 2 days ago
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RE: Advice on reading thermal images
@editor Thanks Mars, better price from the website and ...
By colinc , 2 days ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
To be blunt, I wouldn't choose. If we were to move to...
By Majordennisbloodnok , 2 days ago
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RE: Diagnostic Data Needed for Repeatedly Failing Tesla Powerwall 3 System
Yes, some queries were raised on github recently: ...
By Batpred , 2 days ago

