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Last seen: Jul 9, 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, ...
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@jamespa haha very true, although the engineer yesterda...
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RE: Vaillant Arotherm Pro vs new Plus
One of the test modes in the installer menu forces it t...
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RE: Electricity price predictions
@toodles Didn’t happen with me on IOF once, and I was o...
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RE: What a difference a few degrees make.
Wow. Having accepted the challenge, I ran the cold tap ...
By Old_Scientist , 17 hours ago
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RE: HeatPump maintenance in Swindon area?
@vince31 have you tried using our finder:/p>
By Mars , 17 hours ago
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Looking for beta testers for a new homeowner heat pump tool
Over the past few months I've been building a brand new...
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RE: Indevolt Batteries UK Support & Info Thread
It depends on how you configure it via the app. The ma...
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RE: Renewables & Heat Pumps in the News
Be interesting if this results in any wider changes to ...
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Heat Pump Fundamentals For Homeowners
Months in the making. Finally live. I've built an onlin...
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If Reform were to win, I suspect that many of the AR7/8...
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