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Last seen: Nov 5, 2026
I suspect its mainly that you get the views. Upstairs too warm is going to become something of a problem as insulation gets better, particularly giv...
Good, what Id expect, you may need to tweak the WC as the temperature cools down, but hopefully thats it As you obviously realise there is nothin...
You might not be able to, but your installer definitely could. If you swap flow and return either on the primary side or the secondary side then basi...
With that drop its clear that very little hot water is getting from the primary into the secondary so either pump problem or piping problem. Has he p...
Really sorry to hear this, I was expecting no change not a deterioration and I must therefore eat humble pie following my comment that swapping a smal...
made of brass not plastic, proper square hole same shape as bleed screw. I did a quick search and they seem relatively rare, most seem to be a (pres...
Definitely. 8C DT is higher than the default design DT for most heat pump systems which is 5 This has the effect of reducing the average flow temp b...
Thats a great analysis and |I doubt any heat loss calculations adequately deal with this. Put another way there is an (probably) unaccounted for loss...
Thanks. I had forgotton that particular feature. I presume the call for heat switches secondary pumps on/off not the heat pump. All of this is goi...
Its the heat pump, more specifically the compressor, cycling on/off quickly. The most important parameter is the on time, anything less than about 1...
It will inevitably. If your heat pump capacity is perfectly matched to your house loss you can expect the heat pump to cycle from an OAT of roughly 1...
re 'enforced night mode running constant at 60%' are you saying that the heat pump was previously forced on (at 60% modulation) at night. If so thats...
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Latest Posts
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@susannasaunders Reluctantly I think i agree with @r...
By JamesPa , 5 minutes ago
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RE: Why don't people choose heat pumps?
It's swings and roundabouts - during off-peak periods t...
By Temperature_Gradient , 1 hour ago
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RE: Adding data centre electricity costs to domestic energy bills?
never ceases to amaze me.. Keeping steel works going ...
By Batpred , 8 hours ago
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RE: Electricity price predictions
great session Reminds me why some politicians can be ha...
By Batpred , 8 hours ago
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RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
Absolutely agree. The massive Hager CU my vaillant requ...
By Batpred , 9 hours ago
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RE: How much of your renewable and home setup would still work if the internet went down?
absolutely agree. even if many providers see that extra...
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RE: Octopussy cosy 6 experience
People who have a Cosy appear generally to be happy wit...
By JamesPa , 12 hours ago
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I thought the cr*p came first and the biofuel came afte...
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RE: Aerotherm and weather compensation
@jamespa I replied yesterday with detailed readings whi...
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RE: Marvel Heating liquidation
@editor This is an important point. each winter, you...
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Very nice. we’ve been super soggy here, but rather m...
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RE: DIY powerflushing tutorial
Interesting! I toyed with the idea too. But I installed...
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews Agree with the others on sequence: loft first...
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
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