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Last seen: Jan 14, 2025
this needs qualifying. The "install a system that won't get any complaints or callbacks but we don't care about efficiency" approach installs an LL...
@bontwoody no (as per previous post) I optimise for lowest cost at "decent but not best" efficiency by doing 1 full reheat a day, during the night. Bu...
@bontwoody if you''re on a cheap night tariff the cheapest time to fully heat DHW is at night (less efficient but costs less). If no cheap tariff then...
the smallest amount slower that you can reliably engineer. The thing you are trying to tune out is mixing of hot and cold flows within the LLH, which ...
kudos to yourself for helping your neighbour this way. on DHW, I do the exact opposite of what your chap said. I let the cylinder get as cold as I c...
@paulrlondon did they flush the system round after the last piece of major radiator / pipework? good practice would be to push a load of water through...
@cathoderay flow rate tweak - yes my bad, I had it in my head we were balancing flow rates with an LLH. It hadn't occurred to me that it wouldn't make...
@cathoderay I thought a bit more about the flow rates thing. with a Buffer / LLH it matters to get them balanced, as that minimises the effect of mixi...
@crimson the only places for TRV's in an ASHP system are a) a room with large solar gain b) bedrooms, you may want them to run cooler than the rest o...
@crimson one little known fact , particularly by "ex gas fitter" plumbers, is that zone valves themselves slow the flow down. A "typical boiler style"...
I'm not sure if its me and I'm going mad, but the "preview" button at the bottom of the compose box seems to have disappeared since the move to the ne...
<spits blood> even grahamh the man who was freedom, advocates bufferless now. oh B411s, thanks, missed that. In that case @swanny we need t...
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Latest Posts
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RE: Renewable Heating Hub Homeowners' Q&A Podcast
Come for the low-carbon homes. Stay for George Clarke’s...
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RE: Renewables & Heat Pumps in the News
Would you care to comment on the Government initiative ...
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
@razz, as we head into the heating season, I just wante...
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RE: How quickly would you want/expect heat recovery to take from setback?
That's the issue, those graphs show your heat-pump (in ...
By Temperature_Gradient , 6 hours ago
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RE: How should the Boiler Upgrade Scheme be reformed?
Not quite, regular A2W heat-pumps need a load of extra ...
By Temperature_Gradient , 2 days ago
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RE: Heat Geek installations: share your experiences
one thing i learnt from reading people’s comments and e...
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RE: Cooling/heating with one unit
"The way we use A2A on a cheap overnight EV tariff is t...
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
We have ‘signed on the dotted line’ today for a Panason...
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
...or it was there and was lost thanks to laziness and ...
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@bobflux Thank you for your response. I am trying to ...
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This post is about how I successfully configured a buff...
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The installer visited yesterday and suggested the noise...
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RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
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