Last seen: Jun 18, 2025
1600kWh total import in January, all-electric house, around 1200kWh of which will be ASHP heating and hot water. January was about 25% of our annual i...
Weekend upgrade, Primary Pro done properly, unlike my installer’s attempt. Less heating the street hopefully 😉
@jamespa it's seldom adequately understood even by us [so-called] engineering professionals. There was an excellent series of articles published in th...
I think there's a sector of the energy efficiency retrofit industry that is well meaning, but simply incompetent. There are two passive retrofit measu...
Hi there, and welcome @wyf. Glycol might not be compatible with all compression fittings that use rubber or neoprene sealing systems. Needs checking. ...
I would insulate them, and any other valves bodies and buffer thank bulkhead fittings, etc. not currently insulated. You can't really over-insulate pi...
Hello @davidm06, Grant 10kW owner here. We experience the same, the Grant Aerona R32 is a defrost-happy unit, one which will defrost every 40-50 minut...
@jamespa it's a good find, thank you. Some inaccuracies however, including the assumption that split air source heat pumps have the compressor inside ...
Our 10kW Grant Aerona also gets noticeably louder when cold. There's a few reasons why: 1. The ASHP is working very hard, the compressor frequency i...
Hi @steam-powered, @mikefl makes good points above, especially balancing the low loss header if you have one. If you don't have any flow setting or mo...
Our 2024 year end summary: 1992 EPC C house (76%) 155m2. 10kW ASHP primary CH & DHW, 5kW wood stove secondary heating for colder winter evening us...
Rubbish in = rubbish out.EPCs are not reliable with too many assumptions at the discretion of the energy assessor. I downloaded the MCS 031 system p...
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RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy
Short video from Greg on the announcement
By Jeff , 1 hour ago
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@bart That is terrible and a clear breach of the buildi...
By Brendon Uys , 2 hours ago
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RE: BUS Grant: removal of all other fossil fuel heat sources
@editor If it is of any interest, we had the BUS grant,...
By Toodles , 9 hours ago
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Sorry to hear that @bruce. Sadly I’ve heard from multip...
By Mars , 19 hours ago
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RE: Crystal Ball Time: Communal or even Area Energy Storage?
I am invested in a couple of listed energy storage fund...
By Old_Scientist , 22 hours ago
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RE: Who's your electricity provider and what's your tariff?
That would be my biggest commitment -time to gain great...
By SUNandAIR , 1 day ago
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RE: Who has a V2G EV installation
As has been discussed on other threads, trying to justi...
By Majordennisbloodnok , 2 days ago
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RE: Aira Heat Pump: Stylish Scandinavian Heating
Thanks @mikeh. Then I will also go back to non smart ta...
By ChandyKris , 2 days ago
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RE: Location of hot water isolation valve on cylinder
@transparent Thank you so much and very helpful. Earlie...
By rossowheels , 3 days ago
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RE: Ecodan consuming 100kwh per day in new build!!!
It does indeed look like that, @skyefarmer. There is ...
By Majordennisbloodnok , 3 days ago
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RE: Plug and play solar. Thoughts?
Have a read of my previous posts on so-called Balcony S...
By Lucia , 4 days ago
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RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
"To tell you the truth, I don't know if HAL is homicida...
By Scalextrix , 4 days ago
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The Importance of Radiator Balancing for Efficient Heating: Introducing the Flow Regulating Valve
It’s fascinating to watch how low-temperature heating i...
By Mars , 5 days 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 , 5 days 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 , 6 days ago
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RE: Pressure drop Primary circuit
I've always regarded topping up heating systems as my j...
By JamesPa , 6 days 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 , 6 days ago