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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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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@lizzie Thank you, very interesting and useful informat...
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RE: PV and battery long payback - sense check query
@jamespa I was just commenting on the speed, not sug...
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Readers here please note that Derril Water and many oth...
By Transparent , 20 hours ago
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RE: Advice on Vaillant Sensocomfort
Oops, I meant Sensocomfort (the UI to the controls)
By Batpred , 20 hours ago
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RE: Heat Pump Training vs. Real-World Installation
Our instal was very much the opposite. White haired blo...
By Batpred , 20 hours ago
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RE: Flushing system, cleaning and inhibitor
While skim reading a manual for our Vaillant HW tank, I...
By Batpred , 21 hours ago
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Of course, what do you expect, human beings are human b...
By JamesPa , 22 hours ago
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RE: 'Chinese Diesel Heater' to heat the home .....
Old thread but I'm new to the forum so new to me. How...
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I'm not sure why you would want to make it more difficu...
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RE: Wood burner with ASHP - direct air?
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