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Last seen: Jan 28, 2026
Update on this. It irked me that the plant room pump had to be on 1/3 not 2/3 so reached out to plumber and asked if the Grant ASHP speed had changed...
It seems opening them back up does reduce the temperature. Which makes me wonder if the rate at which the water passing through is too fast? Certain...
Out of interest, does anyone have an idea why in the hottest performing room, turning the rads down (basically closing down the lock shield equivalent...
So now I’ve come to the conclusion the rads are now correctly sized (did hope so as according to calcs they’d be very much oversized, just purely phys...
Going to be a struggle, already complaints upstairs is too hot at 19-20C. Ive now had to turn all the hidden Drayton balancing down to 2/6. And have t...
Thanks James, it’s a 13Kw. It’s definitely cycling. Only difference this time is hits 20c rather than 18.5c after radiator upsizing was done recentl...
Thanks James, I do wonder about that LLH. It appears the challenge Ive always had still remains. The Eskimo rads seem to work very well at low tem...
As a summary I had numerous issues with the heat engineers/plumbers on a project that was an extension and full re wire/re plumb and re insulate proje...
@kenbone I’m Suffolk based
that’s ideally what I’d like to have done to (once current plumbers sort the rad sizing under the contract, I don’t want them touching anything else)....
Hi Ken, lagging is done just used an old photo for the detail of pipes. I’m hoping for rad upsize replacement then will look later in the year for rem...
4 days later, with guests over the weekend I left things mostly alone. I did end up changing the secondary pump speed to 1/3 as lock shields became a...
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Latest Posts
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RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 49 minutes ago
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RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
By bobflux , 3 hours ago
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RE: Has anyone seen this problem before? Huge anticycling times
Im now getting the exact same fault list after 2 years ...
By JamesPa , 6 hours ago
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RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Thats all interesting. DHW on my Vailant seems to respe...
By JamesPa , 8 hours ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
One of the other mods has just reminded me that @ashp-b...
By Majordennisbloodnok , 10 hours ago
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RE: Electricity price predictions
So a final update on Charge Pack, now I have nearly rea...
By bontwoody , 1 day ago
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RE: Indevolt Batteries UK Support & Info Thread
My ideal install would have my battery installed before...
By BlizzardGreen , 1 day ago
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RE: PV and battery long payback - sense check query
@old_scientist I have now drafted 2 replies - both have...
By DavidB , 2 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: adrian Manufacturer: Appliandirect.co....
By Adrian , 3 days ago
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RE: Acond heat pump failed after four years - diagnostic quote £940 plus VAT
@downfield Thank you Downfield. This sounds potenti...
By Mia , 3 days ago
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RE: Digest of UK Energy Statistics
@jeff Yes my brother in Oz told me of that charge year...
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