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Last seen: Nov 11, 2026
@anca1808 Just to give you some comfort and set expectations, my Vaillant heat pump is working out 13% cheaper than gas on a like for like basis, over...
Maintain the LWT by adjusting its heat output (if the required power is within its modulation capabilities) This is surely OK. Its adjusting...
Im sorry but I think you are getting confused. The statement above is either not correct or there is something wrong with your system that needs to b...
I cant remember what your WC curve showed, but it should follow that. This is only a few degrees change given that OAT doesnt vary that much Wit...
OK I found the original post about 4.88kW and I also agree with @editor above. Firstly It wont help to operate with the thermostat as opposed to on ...
Im sorry to hear about your troubles but its definitely good that the buffer and secondary pump has been removed. You are on the right path, keep the...
The Mitsubishi R29O pump has 2 compressors to achieve exactly that. Sofaik the only domestic one so far to do this
@anca1808 Lots of ideas above about what could be causing your issues. Nobody, including me, can be definitive because we don't have your system in...
I concur in principle with @old_scientist however there are some points to consider 1. your house has a heat input other than the heating, due to wa...
Its good to hear that you are pleased with the outcome. I agree with @old_scientist that cycling is to be expected (and is unavoidable) in milder tem...
That needs investigation. Its currently mild so you can do things that you cant do when its cold. Turn the ASHP off completely for 3 hours (preferab...
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Degrees of Separation
Latest Posts
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RE: Buffer tank on a 2 x 14kw Ecodan system
@fosterl2, ah, that changes the picture somewhat. I’d a...
By Mars , 8 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 , 10 hours ago
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RE: Why don't people choose heat pumps?
@susannasaunders The link I have found may provide a li...
By Toodles , 13 hours 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...
By Papahuhu , 1 day ago
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
@batpred I mentioned earlier that targeting the payment...
By Toodles , 1 day ago
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
By SusannaSaunders , 2 days ago
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Six books in three years and I think I’ve now covered j...
By Mars , 2 days ago
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RE: Grant Aerona3 13kw - Buffer Tank - Heating Journey
@heymikey Well done in achieving as nearer a match acro...
By Toodles , 2 days ago
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Grant Aerona - Weather Compensation and Schedules
Im trying to set up a friends Grant Aerona. The WC curv...
By bontwoody , 3 days ago
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RE: Air-to-Air Heat Pumps & Air Conditioning: UK Heating and Cooling Q&A
@jamespa I agree, the efficiency of Cosy Cooler ought...
By Rob of York , 3 days ago
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RE: How much of your renewable and home setup would still work if the internet went down?
I think you're right! 🤨
By Transparent , 3 days ago
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RE: Renewables & Heat Pumps in the News
ECO4 muddies the water somewhat, and then some. I thi...
By cathodeRay , 3 days ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
If there is a drain nearby that's exactly what I would ...
By JamesPa , 3 days ago
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I think that CCGT plant in Lingen is more likely to suc...
By Transparent , 5 days ago
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