In article ,
Chewbacca writes:
Big snip

Running the boiler at the lowest temperature you can get away with
is realistically the best you can do. I run mine at 45C flow 40C
return, but I have radiators suitably sized to heat the house with
the water at that temperature.

Que comments about legonella (spelling??) growing in the hot tank at
temps that low.......

That's the central heating temperature, not hot water.

--
Andrew Gabriel
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