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Graham Hendra
Graham Hendra
@grahamh-energy-donkey
Member
Estimable Member
Joined: Apr 14, 2021
Last seen: Jul 31, 2026
Profile Activity
Topics: 7 / Replies: 107
AllTopicsReplies
Reply
RE: Choice of heat pump - Help needed - Vaillant Arotherm versus Samsung versus Logic Air versus Grant Aerona

tbh there isnt a lot of difference between the heat pumps listed, they are all good, all small, all quiet etc. But the service levels are dramatical...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Dodgy Vaillant ASHP foundation & Eddi Diverter Making Central Heating Water Dirty

ok first there is no need and never has been a need for a concrete plinth, as long as your unit is level ish. Mine is on the grass, guess what it work...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: World’s Most Expensive Kettle: Undersized Heat Pump

i dont think they are dishonest, they just cant do the maths. back in the old days the supplier did the heat loss so this dindt happen. now any idiot ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: World’s Most Expensive Kettle: Undersized Heat Pump

i agree pasiv houses are 10W/m^2 but by definition a passiv house wouldn't need a heating system. so i never come across them. They are also incredibl...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
World’s Most Expensive Kettle: Undersized Heat Pump
2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 9
Views: 1340
Topic
How Do Refrigerants Actually Work?
2 years ago
Forum
Well & Truly Off The Grid
Replies: 1
Views: 1265
Topic
Do thick walls make for warm houses?
3 years ago
Forum
Insulation
Replies: 18
Views: 4709
Reply
RE: National heat pump day April 12th

I used 3305 kWhrs over the whole year and 1608 kWhrs by the 12th April. not bad huh? it was higher than expected in the first 4 months as it was supe...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installation queries for Grant Aerona

@iancalderbank im no eco 4 expert i tend to steer well away from this sort of thing sorry

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What do we need to know before installing a heat pump?

@derek-m to be honest i couldnt care less what they do. whatever happens there will be more paperwork and not a lot will happen.

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: What do we need to know before installing a heat pump?

@ginny i was the founder of freedom. But i dont work there any more, i haven't for 2 1/2 years, i sold it. I got fed up of people constantly asking fo...

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Topic
are their any nice easy to understand books on heat pumps, a shameless plug
3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 0
Views: 2138
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