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Last seen: Nov 12, 2026
If you haven't already, have a read of this...
'Brown' isn't terrible though. Again, in the correct circles this is the steel in the system passivating. Like Lead, once steel has a coating of 'rust...
Sorry, gents, I wasn't supposed to drop a comment and then flee to the hills! 😂 It’s a known fact in my circles that chemical inhibitors incre...
This is what bacterial growth in UFH loops looks like. It’s not slimy; it’s solid brown, just like this.
The problem is that while inhibitors inhibit metal corrosion, they also increase water conductivity. If you have no air, low conductivity and the corr...
@old_scientist Dave Smith recommends 1/3 of a tube per joint. Videos on making joints are here...
Lots of installers buy these hoses, and I don't think we've ever had any negative feedback. Just bear in mind they don't come with bond and seal (whic...
Don't mistake designed flow rates (which fixed speed pumps need to be set to to obtain maximum input when required) with variable flow rates that heat...
The Grant engineer has given you the correct information. If you let the water stop completely each time the compressor stops, consider what happens...
VRG131 is just a popular valve and can be adapted to any size using fittings. The pump can be chosen based on the pressure loss. What will be in con...
Exactly what I said in the video, and that is one of the worst AAVs in the market, so they can expect leaks in the future.
Having joined the Aira owners group on Facebook (for some heat pump research I am part of), they have completely locked the system down. I’m also susp...
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Degrees of Separation
Latest Posts
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Should I change my cylinder when changing from a gas boiler to a heat pump.
I have 178 L Gledhill unvented cylinder which was fitte...
By David , 7 hours ago
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RE: Plug and play solar. Thoughts?
Impressions so far from the one I've installed are that...
By EtchedPixels , 8 hours ago
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@batpred The Daikin temperature probe protrudes from th...
By Toodles , 12 hours ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor And as an occasional contributor, may I say wel...
By Toodles , 14 hours ago
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
They don't have to try. Our entire system is d...
By EtchedPixels , 14 hours ago
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RE: Why don't people choose heat pumps?
Fair enough. I guess I was thinking of pipes that run ...
By JamesPa , 14 hours ago
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RE: How Can I Prove Coal Was My Main Heating Source Without Receipts?
Got excepted for the grant now so thanks for the replie...
By Chilli304 , 18 hours ago
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Daikin Altherma 3 R F+W, room thermostat control, weath...
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RE: Buffer tank on a 2 x 14kw Ecodan system
Pretty much as I had guessed in my crude scaling from m...
By JamesPa , 22 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Well you have a vibration generator running at some fre...
By bobflux , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
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Six books in three years and I think I’ve now covered j...
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