Last seen: Jul 5, 2025
@sheriff-fatman Thanks for the very well thought through summary, which has elements common to others who report problems. Fortunately there d...
Havenwise is (or at least was when I spoke with them about 6 months ago) an online only service, no hardware required (other than an internet connecti...
I apologise that I must correct the above. Clause 5 of the regulations still requires a valid EPC. Clause 6 which previously specified that the epc ...
I have seen it argued that 'fabric first' is favoured by the fossil industries as a great way to delay material action. The carbon dioxide savings ...
I wouldn't be so sure about that. Heat pump designers will optimise for max scop at rated output by playing games with the operating point on the cur...
This screenshot from the John Cantnor video on cycling shows why it's highly likely that an someone significantly oversized heat pump is less efficien...
Fair enough. With R290 heat pumps, which seems to be the direction if travel for reasons of gwp, this is possible natively at a cop of >1. We j...
EPC no longer necessary Here is the link to the part of the regulation that previously specified such a requirement and in addition some insulation...
The regulations also include this paragraph: 4) For the purposes of [the paragraph requiring 100% coverage ] “hot water” means hot water which i...
Whilst the eco arguments for PV and heat pumps and, to a lesser extent EVs, are pretty clear, the eco argument for a battery is much less so, at least...
Bus and eco4 are totally different schemes. There is no EPC rating requirement for bus Eco4 has, I believe, both an EPC requirement and a means t...
Check the detailed specs. 7kW Vaillant is actually 8kW + at your operating conditions so unlikely to be a better size match than the 8kW Samsung. Th...
Latest Posts
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RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
I had a very similar problem with my valiant and it tur...
By JamesPa , 45 minutes ago
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@heacol, if you're around, can you please provide some ...
By Mars , 2 hours ago
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RE: Servicing Hitachi HP in rural Somerset
I'd give GreenGenUK a call or email them: sales@greenge...
By Mars , 2 hours ago
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RE: Ecodan consuming 100kwh per day in new build!!!
@anca1808 I have just reviewed the whole thread. In s...
By JamesPa , 4 hours ago
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RE: Heating coming on when not required
I played with a max heating temp but there is a world o...
By JamesPa , 15 hours ago
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RE: Pressure drop Primary circuit
I've always regarded topping up heating systems as my j...
By JamesPa , 15 hours ago
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RE: Heat pump solutions and/or installer recommendations for France
I’d travel to France for work if you were struggling wi...
By Damon Blakemore , 22 hours ago
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RE: 5 Star Service from Havenwise
That's always a danger with any new good idea, @morgan....
By Majordennisbloodnok , 1 day ago
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Have your say in the Renewable Heating Hub Awards
It’s time to celebrate the best (and call out the worst...
By Mars , 2 days ago
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RE: Mitsubishi cycling while on chilled water output
@iaack yes there's no denying that cold air sinks! I s...
By downfield , 2 days ago
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RE: Weather compensated secondary circuits with Biomass
@andycoo that flooring sounds ideal. Extra volume is ...
By Sune , 2 days ago
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If you are thinking of heating on the immersion conside...
By JamesPa , 3 days ago
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RE: Surface mount or bury primaries for heat pump installation?
@tomasmcguinness, I think your best bet would be using ...
By Aventus Eco , 4 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles all depends on asking the right questions! And...
By Tim441 , 4 days ago
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RE: Commencing on an ASHP Installation Process
I received confirmation this morning that my Greener Ho...
By Sheriff Fatman , 4 days ago
