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NJT
@njt
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Estimable Member
953 kWhs
Joined: Aug 6, 2024
Last seen: Mar 10, 2025
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Topics: 2 / Replies: 49
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RE: Heat pump install overloads home fuse - 80A limitations

@editor Hi Mars, Very interesting read. An 100A fuse would have made my life much easier. I just applied to the DNO for a fuse upgrade as oc...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump install overloads home fuse - 80A limitations

@dougmlancs I'll have to go down that route I suspect. If octopus ever get back to me again, I'll suggest taking it out of the calculations then...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump install overloads home fuse - 80A limitations

@editor That would make my situation easier, but they were adamant they will only fit 80A max. If I want more I'll have to pay to have 3 phase fitt...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump install overloads home fuse - 80A limitations

@editor Hi, My DNO is National Grid (West Midlands area). I had a 60A fuse, they came out but would only replace it with an 80A fuse. All at n...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump install overloads home fuse.

@allyfish I rang our DNO on Friday they did the 60A to 80A swap on the Monday free. Did your heat pump require an electrical amp test? I don't...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump install overloads home fuse.

@johnmo Hi Johnmo, I've looked on the data sheet and it does say 24A, recommended fuse 25A, so looks like it's the correct figures given to the ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump install overloads home fuse.

@jamespa Thanks JamesPa, Our DNO won't install anything more than 80A, in fact while they were changing our fuse, the neighbours came out and sai...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Heat pump install overloads home fuse - 80A limitations
7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 29
Views: 2375
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RE: How I Negotiated a Better Deal on My Heat Pump Installation with Octopus Energy

@allyfish Thanks. I'm just waiting for a date now for install, I signed last week. I'm hoping for what they told me, 4 to 6 weeks. Definitely...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How I Negotiated a Better Deal on My Heat Pump Installation with Octopus Energy

@toodles Hi Toodles, That's good to know. I'm rated a "B" also on EPC. 5500 heat loss, 6700 rad output, 8 KW Daikin. I have been reading a...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How I Negotiated a Better Deal on My Heat Pump Installation with Octopus Energy

@allyfish I quite agree. But the final price was £3600 less than Heat Geek quote and that's way more than any potential radiator upgrades that ma...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How I Negotiated a Better Deal on My Heat Pump Installation with Octopus Energy

I've had a response from Octopus. "At Octopus Energy, we install a Volumiser, which has one inlet and one outlet for connection to the heat pump an...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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