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bontwoody
bontwoody
@bontwoody
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Joined: Mar 5, 2022
Last seen: Oct 5, 2026
Profile Activity
Topics: 39 / Replies: 1021
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RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

@jml LOL, im the one who is a little confused now 🙂 If your shower is electric, isnt that the main use of hot water in your house? It is in ours, al...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

Thanks. I forgot to take the boiler efficiency into account. Even better running costs then.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

@jml So your oil usage is pretty much for heating only and your domestic hot water is heated via electricity for the most part. £700 of oil is about...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

@jml Hi Jordan I cant see an attachment? The expansion vessel is as you suppose normal and not a buffer vessel. Good that they propose anti frost va...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

@jml Hi Jordan So given all the insulation upgrades you have done, I think you might be being too pessimistic. Perhaps 50 W/m2 might be a bette...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Advice on ASHP choice needed

@derek-m Good point!

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: HP Cycling, Expected or Undesirable

@old_scientist Hi, yes I was comparing COP without taking the cycling into account.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

@jml Hi Jordan, welcome to the forum. You sound like you have done a lot of research already and that your house is well suited to low temperature...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Advice on ASHP choice needed

@toodles Well to me, it would depend on the deal I was getting, If the quote was substantially cheaper than others and it was take it or leave it, the...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Advice on ASHP choice needed

@toodles absolutely, I, like you prefer 22.5C so my house is configured to achieve that where I need it. Its worth pointing out I suppose that if you ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Advice on ASHP choice needed

Its a fair point that rooms these days can be multifunctional although in terms of heat pump output and heat loss, it would only be an issue on a coup...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Advice on ASHP choice needed

21C in the bedroom would be very warm , my wife would disown me! 18C is about average although many like it cooler! The sleep foundation say: The be...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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