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Last seen: Jan 28, 2026
Thanks @JamesPa, I think the external volumiser suggestion - supposed to be insulated - was on assumption no space inside but yesterday’s visit it was...
I’ll check which version the Grant is, suspect like you thats what the specialist is seeing - that there’s no requirement. Antifreeze valves the ins...
@jamespa - the Grant ASHP isn’t being replaced, the 13Kw will remain, apologies if I wasn’t clear. The heat specialist was experimenting with...
Thanks both. I’d forgot to detail that pump speeds either side of the LLH (Grant one and one in pump room). A lot of experimenting with different sp...
Thanks @jamespa, I think over the almost 3 years we’ve attempted running all zones (Ive spent many hours with settings, balancing rads, closing off ...
It’s been a while since last gave an update… After a couple visits from a heat specialist, and revisits to the calcs. It’s been concluded t...
So with a flow temp maxing at 42C, managed to get living rooms to almost 21C at points in the day. 44C started to overheat one of the rooms so some g...
Thanks Gary, I'll do that with the Drayton balancing key. I know the plumbers turned down the actual lock shield a bit as well so combined should rea...
Thanks Gary, I'll then look at killing off the setback to see if can run it lower (I say it switches off, I have the hallway panel it go down from 23C...
I've created a separate thread to discuss WC settings as feel that's a more specific topic. Still waiting on installers to come and sort that airloc...
Yeah, I’m just concerned that the design of the system is 40C at -3C ambient, if I keep pushing up percentage wise I’m getting quite above that and wo...
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Degrees of Separation
Latest Posts
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RE: Can I start an argument about buffer tanks please? 🙂
Is that such a problem with a 3-pipe buffer tank, where...
By Temperature_Gradient , 20 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 , 35 minutes 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 , 3 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 , 5 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 , 7 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...
By Jancold , 3 days ago
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