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Last seen: Oct 23, 2026
If you want to run a heat pump inefficiently then of course you will need a higher capacity. How did you come to the conclusion you need 12kW? If ...
Afaik there are two considerations namely pump head and water velocity (causes noise and erosion). A short piece of straight 22mm isn't going to incr...
Seconded. But do you reckon that the average MCS guy is going to give you the choice? My underlying issue is that we are told what we 'must' have by...
Posted by: @johnmo ↑ I don't really buy into the heat pump has to be perfectly sized, it has to be suitable. Getting a grossely oversized one ...
22mm is marginal for 8kW, or ok depending on whether you work on 1m/s max flow rate or 1.5 m/s. Are there 2*22mm (eg upstairs and downstairs) or onl...
I don't either, but nor do I buy into the idea that anybody should be forced to do unnecessary pipework upgrades, have an unnecessarily intrusive outd...
If you do this take pictures and get receipts, you may need to get to convince installers it's been done unless the insulation remains visible.
Precisely that. The method is based on BS something or other, I forget which, so even MCS can say it's someone else's. BS something or other is des...
Absolutely, with one caveat, if you have a condensing boiler which condenses all the time, ie is set up properly to run at low flow temp, then the los...
I think the planning inspector probably came to the same conclusion, but obviously he had to express it in legal terms! In fact mine could possibly ...
In fairness a year of my 2 year journey is the planning nightmare, during which I suspended looking for installers. I havent yet reached 20 installer...
@ianmk13 Where are you located? With this info maybe someone here can provide.a recommendation Sadly the industry appears to be riddled with gr...
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Degrees of Separation
Latest Posts
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RE: New Build 3 Phase or 1Phase
Main issue with 3 phase at low power (16A per phase) is...
By bobflux , 51 minutes ago
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RE: How will removing the standing charge on gas bills benefit heat pumps?
I'm not sure it makes much of a difference to heat-pump...
By Temperature_Gradient , 10 hours ago
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@editor Ouch, sorry to re start the tick. I had assume...
By DavidB , 11 hours ago
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RE: Say hello and introduce yourself
@e-a-west as the good Major said, welcome to the forums...
By Mars , 12 hours ago
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RE: How much of your renewable and home setup would still work if the internet went down?
Yes I actually have a copy of a tool that whenever a ce...
By EtchedPixels , 21 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
@editor Hi, To resolve this, please tap on the A...
By Indevolt Tech , 1 day ago
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RE: Double or Triple Glazed Windows?
Posted by: @singlespeed With 9 years repairing windo...
By Rob of York , 2 days ago
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@transparent we’re still running a secure version of PH...
By Mars , 2 days ago
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RE: How quickly would you want/expect heat recovery to take from setback?
Much longer than that here. The heating isn't even on. ...
By bobflux , 3 days ago
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RE: Passiv Smart Thermostat - Help & Forum Support
Obviously the weather is changeable but there's a defin...
By Singlespeed , 3 days ago
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@rob-of-york I must admit that when we had a Daikin hea...
By Toodles , 3 days ago
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RE: Forum updates, announcements & issues
Get the Renewable Heating Hub heads-up on WhatsApp. I...
By Mars , 3 days ago
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RE: Safety study for plug in batteries out to tender - looks like Q3 2027 at best before legal
@editor I pointed out to the one of the Fuse execs that...
By dansus , 3 days ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews As well as loft insulation, there are othe...
By Rob of York , 3 days ago
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