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Last seen: Jan 8, 2025
My MCS calculation spreadsheet shows a COP of 3.3, which claims to be the 'manufacturers SCOP' I don't know where they got the number from. The MCS ...
Great information @Prunus.
@phil-i, you are essentially asking, "should I get a free heat pump now or wait a bit longer and pay for it". Although Grant ASHPs seem to be less...
Yes 😉 The rated kW figure is delivered energy under nominal conditions. Most ASHPs will be able to deliver a bit more and in extreme conditions ma...
I think the scale needed to make it worthwhile is huge. It's not so much the water, it's where you pump it to. If you look at hydro or pumped storag...
@duncan-mac if your max heat loss is 8kW and you have a 7kW ASHP, what happens when it's really cold? Can the ASHP keep up?
This sort of thing goes a long way to explain it. Unfortunately a lot of people read this sort of stuff.
That's exactly what I was thinking. Factor in even 90% efficiency for gas and it's even closer. We just need the installation costs to come down a b...
I'm not so sure. Anyone installing heat pumps should know how they work. If they do, they will know an ASHP running at 50C with 3rd party thermostat...
@RV3 that looks good to me. I assume you have the heating on 24/7 as that's a very high % of heating. I'm about 65% but I have the heating off 12-5am...
It's a high standing charge but I'd be tempted by that. I wonder if it's anything to do with the latest subsidies just appearing in the news?
@riponowl the other thing I meant to say was that some of the ups and downs might be because of DHW. The flow temp seems to shoot up to 55 or so a ...
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Degrees of Separation
Latest Posts
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RE: Why are ASHP installs so expensive?
Posted by: @springswood I confess to becoming a litt...
By Rob of York , 2 minutes ago
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RE: Cooling using an air to water heat pump
I agree with @jamespa's comments which are a good summa...
By downfield , 19 minutes ago
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@mrkfm There are some bad installers out there, both ...
By JamesPa , 27 minutes ago
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RE: Passiv Smart Thermostat - Help & Forum Support
Hi @singlespeed That's fine we have installs where the ...
By Will H , 3 hours ago
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Analysis of the economics of switching to an A2W ASHP compared to other heat sources
This post aims to analyse the economics of installing, ...
By Rob of York , 4 hours ago
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RE: Cooling with air to water heat pumps
@editor does that mean you have to have two separate ex...
By mrkfm , 19 hours ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
Posted by: @ian-s Could always use the money saved o...
By Rob of York , 24 hours ago
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Depends on what controls the pump! Thats the whole poi...
By JamesPa , 1 day ago
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The positive reviews keep coming in for Britain's Heat ...
By Mars , 2 days ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
I have one of these fitted which also allows you to reg...
By Old_Scientist , 2 days ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
By JamesPa , 3 days ago
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RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
By JamesPa , 3 days ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 3 days ago
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RE: Cascade System or larger single unit
@renewables345 I would say if it a new build it’s no mo...
By Aventus Eco , 3 days ago
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