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Last seen: Mar 23, 2026
@macfxd LLH = Low Loss Header - it's on the right of your 2nd picture, and has 4 connections. The two on the left are the flow/return from your ASHP...
My HP is set to "not supply any heat" above 19C external temp i.e. that's the top end of the WCC and above that it'll not run the pump. This isn't "of...
Hi, and welcome to the forums. Your installation looks nicely insulated, and according to the Grant standards with a LLH involved (whether this is g...
I was already fairly interested in low-carbon impact alternatives, and has just moved into a house with an ancient LPG boiler. The existing LPG tanks ...
I have just switched my home insurance to Aviva, from LV. To echo what @technogeek said a while back, their policy wording makes no mention of "boiler...
@crimson Hi. About 20 (30?) years ago it was important that the TRV was on the flow side of the rad, and there was an arrow on the TRV body to show wh...
My figures thus far (just for heating and DHW). Installation in April 2023, but only gathered figures from June. Month kWh Average Outdoor T...
"You need a gas boiler, mate" "The nearest gas pipe is 15 miles away" "..." "..." "Yeah, so you need a gas boiler."
House is a converted bungalow, downstairs being around 100sqm; upstairs 40sqm (just 2 bedrooms up there). Downstairs is mainly open plan, with living ...
I've looked through all 4 documents they send me for 'boiler', 'heating', 'air', 'pump', and can't find any specific reference, apart from saying that...
@allyfish Not to de-rail this topic (so I'll probably post results - if any - on a new topic) but I've just started trialling a scheduled 2°C drop of ...
@tobyg Just to buck the trend, I'd go for the Grant. Now, I have a Grant 10kW and it's proved quite tricky to set-up and get what's needed out of it, ...
Latest Posts
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RE: Estimating true heat loss from twelve months of consumption data
Hi @ian33a you could do your own heat loss calculation ...
By Judith , 4 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
@djh ah, I have never seen this before, interesting ide...
By ASHP-BOBBA , 4 hours ago
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RE: Anyone concerned about GivEnergy?
@sunnyskies I agree with Downfield trying to ask the GE...
By Judith , 5 hours ago
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RE: Setback savings - fact or fiction?
@jamespa — this version may be marginally better: &nb...
By cathodeRay , 7 hours ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
All going according to plan, mid July we get that 7kW a...
By Batpred , 7 hours ago
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Current metrics - DHW target set to 47c
By TaffontheTaff , 12 hours ago
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RE: My Grant R290 9kW Heat Pump Installation
@petch I'm very sorry that I have not picked up your po...
By GrahamF , 15 hours ago
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RE: Samsung gen 7 HP 12kw - auto control issue and water law
Suggest you have a trial with Havenwise app. I have th...
By Broadsman , 17 hours ago
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RE: New Solar, Batteries, Air Source and Under Floor Heating advice please
You’re right: UFH works best with high-conductivity fin...
By bafab , 19 hours ago
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RE: DIY or Don’t Touch? Solarman Smart Meter Install
That was my understanding also.
By JamesPa , 20 hours ago
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RE: Grant Aeona 3 R32 cycling with weather compensation.
That would be abnormal but I cant see from your charts ...
By JamesPa , 20 hours ago
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RE: Vaillant Sensocomfort Time
Oh I remember this from when I set mine up 2 years ago,...
By JamesPa , 1 day ago
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Heat geek have already stated that the pro is in fact c...
By JamesPa , 1 day ago
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RE: The Myth of the MCS Performance Guarantee
@editor I know. As if MCS wasn't bad enough, it's now e...
By Deltona , 1 day ago
