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Last seen: Jun 26, 2026
@sunandair hi. Sorry for the delayed reply. I was considering the Grant Smart Controller as a retrofit for my ASHP, and had the good fortune to be off...
I had a good chuckle at this. 😉 The Aira YouTube product launch was targeting Germany, Italy and the UK markets, as a group launch of branded Vaillan...
No data sheets or produce literature yet, but a very glossy product launch. It's a branded Vaillant product, so it should be good. I'm not a great fan...
That's revealing. The house may be super insulated, but typically a Victorian property would have solid walls and non-insulated floors. Do you know mu...
Depends on the heat loss of your house and how warm you are wanting it. Defrost can effectively de-rate a heat pump's output capacity if the time take...
@signorjim delta T flow and return of 10degC is quite high for an ASHP. At 10degC delta T and 17l/min flow it's theoretically giving out 10x4.2x(17/60...
Hi @signorjim, the slow rise in leaving water temperature from your ASHP [I presume you mean, rather than refrigerant temperature], may be due to the ...
Agree, heating oil prices vary short-term seasonally, and longer-term with the cost of a barrel of oil. We found we could always purchase it for less ...
@steve81uk and @toodles, we're all on a similar journey here. Perhaps to a lesser or greater extent of data acquisition, analysis and statistical geek...
@graemed well done! Will you be issuing an invoice to your installer at your standard charge-out rate +VAT on the same payment terms they had with you...
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Degrees of Separation
Latest Posts
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RE: How should the Boiler Upgrade Scheme be reformed?
Yes, their gas typically costs twice ours and electrici...
By Batpred , 1 hour ago
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Over the years, due to the non barrier PEX underfloor h...
By bobflux , 2 hours ago
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RE: Getting closer to a finished Haier system
All the 45° elbows required for getting the primaries i...
By Singlespeed , 3 hours ago
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RE: Tesla Powerwall (2) Calibration Cycles
@papahuhu Likewise, the main ‘extra’ relates to TOU tar...
By Toodles , 9 hours ago
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage
That sounds like a better approach (being able to see a...
By cathodeRay , 1 day ago
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RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
Thanks for the reference @jamespa I can't see any te...
By Transparent , 1 day ago
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RE: battery storage without solar
Indeed, current on the grid input = current used for ch...
By bobflux , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu @papahuhu A lot of tears and sweat went into ...
By Andris , 1 day ago
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RE: Solar Power Output – Let’s Compare Generation Figures
We have the same problem, 12 mature trees clip the morn...
By Papahuhu , 2 days ago
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RE: Solis inverters S6-EH1P: pros and cons and battery options
I had a battery and inverter installed a while ago, my ...
By Batpred , 2 days ago
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RE: Is This Initial Free Quote From Octopus Trusted Partner Reasonable?
@ltron2 The EPC on our house is A-92, however that i...
By Rob of York , 2 days ago
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
The layout is confusing - much better like this: We b...
By downfield , 4 days ago
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RE: Is it just me, or does tradesperson timekeeping and communication drive you absolutely mad?
My experience, backed up by opinions from various frien...
By Majordennisbloodnok , 4 days ago
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RE: Analysis of the economics of switching to an A2W ASHP compared to other heat sources
I had a meeting today with a company based out of Swede...
By Mars , 4 days ago
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RE: Review your electricity provider
We were with Octopus in our old house and it was fault...
By ian33a , 4 days ago
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