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Last seen: May 31, 2026
[quote data-userid="5190" data-postid="19305" A volumiser in the primary, together with a good insulation of the PHX to reduce delta T to around 1C m...
@cathoderay With regard to the cycling:Exactly what controls do you have? I understand you have a manufacturers weather compensation system, and T...
A few ideas to consider: The ashp is outside - no doubt it's measuring produced power at the unit, so will include any pipe losses that the oil boil...
"Natural" gas is effectively an unlimited supply of highly flammable material - and so is super dangerous! Our R290 gshp is outside (tick!) and use...
The heat exchanger material conductivity is actually a compromise. Through the material, the thin way, we want high conductivity. Along the material...
@gutoffowc Plastic heat exchangers are usually used inside MVHR units. For an air:air heatexchanger, there's not that much heat transfer needed ac...
@iancalderbank I'd love to see MID certified meters installed under MCS, and then a guaranteed SCOP performance from it! I appreciate the meters c...
The blog on this forum compares installed SCOP to manufacturers datasheets, giving overall average of 2.7:
I think that the price ratio of Electicity to Gas is largely responsible for the UK's reluctance to embrace heatpumps. I understand that it will come...
@gutoffowc It sounds like it needs more than recalibrating. Perhaps the original installers? We have a vent axia sentinel kinetic BH plus, it ha...
Here’s an example of a mid certified meter- if you have a spare slot in your consumer unit, it’s an easy install for a sparky, split core so just clip...
The compressor is brazed to copper pipes - brazing is basically much higher temperature soldering, joining copper pipes together with a dissimilar met...
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Latest Posts
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@toodles @jeff So I guess the question is: does someo...
By JamesPa , 9 hours ago
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RE: Renewables & Heat Pumps in the News
the Derril Water solar plant? I will cross-post. &n...
By JamesPa , 9 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
I suspect you are right. In our litigiousness society ...
By JamesPa , 11 hours ago
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RE: HeatPump maintenance in Swindon area?
Sorry I can't but ... it sounds like a job any half dec...
By JamesPa , 14 hours ago
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My contribution is to wonder how your radiators are plu...
By springswood , 23 hours ago
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RE: Powerwall 3 tripping RCDs in powercut
If I were to write a remote diagnostics chart for the P...
By Transparent , 2 days ago
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RE: Electricity price predictions
So now that I have just about managed to get full contr...
By bontwoody , 2 days ago
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RE: GivEnergy inverter tripping due to over-voltage?
possibly interesting to note the latest spreadsheet S...
By Tim441 , 2 days ago
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RE: Summer heat is becoming the new winter cold in the UK. What are you doing about it?
Our ashp service is booked for a couple of weeks from n...
By Judith , 2 days ago
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RE: Air Conditioning in Cars - What is this doing for the Climate?
In fairness, my EV has a heat pump in it which is theor...
By Majordennisbloodnok , 3 days ago
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RE: Can DNO change a G99 export allowance once approved?
Fair enough and mea culpa. I was responding to a comme...
By JamesPa , 3 days ago
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RE: Two heating zones to one zone
In your case, converting it to a single zone sounds lik...
By sarahstrachan , 4 days ago
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RE: Consultation on reform of Consumer Protection in the retrofit market
I agree with much of that, but that's a much wider refo...
By JamesPa , 4 days ago
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