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Has anyone replaced an old ASHP with a new one?

 
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Air Source Heat Pumps (ASHPs)
Last Post by Tim441 3 weeks ago
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Mars
 Mars
(@editor)
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26254 kWhs
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15/02/2025 10:20 pm  

@pressure sounds like a positive outcome and glad you’re happy with it so far. Keep us posted on your progress and whether running costs are better than with your old unit.

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 Tim441
(@tim441)
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2232 kWhs
Joined: 2 years ago
Posts: 265
16/02/2025 4:30 pm  

@pressure very interesting read - thanks for posting. A lot of us will have such decisions in coming years. Hopefully mine is still 10 years away.. LG installed 2020.

How did you decide on 9kw? Did you do heat loss calcs as if new install? Of use actual data from existing heat pump? Or??

Mine is currently 16kw which I think is probably about "right size" on paper but with the way we run with cooler bedrooms and some other rooms also cooler I suspect we could drop to something like 10 or 12 kw.

I don't know how much improvement there might be to COP over the years?

 

This post was modified 3 weeks ago by Tim441

Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
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