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#a2w — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #a2w, aggregated by home.social.

  1. @matthannon do bear in mind they’re a bad idea (TRVs in general with the exception of bedrooms) with an Air to Water #A2W based (i.e. radiator/UFH based) #HeatPump so shouldn’t be used, nor pushed.

    An open circuit that doesn’t restrict flow is very very important to get the efficiency levels they’re rated & good for.

    Take a look at #HeatGeek (Adam Chapman) @petereastern , @kenbone , @stevewebster56 , Nathan Van Gambling for references to this

  2. @matthannon do bear in mind they’re a bad idea (TRVs in general with the exception of bedrooms) with an Air to Water #A2W based (i.e. radiator/UFH based) #HeatPump so shouldn’t be used, nor pushed.

    An open circuit that doesn’t restrict flow is very very important to get the efficiency levels they’re rated & good for.

    Take a look at #HeatGeek (Adam Chapman) @petereastern , @kenbone , @stevewebster56 , Nathan Van Gambling for references to this

  3. @kenbone @jesseb4me @stevewebster56

    At ~09:30 today in below screenshot I turned off all but one off the 2.8kW (heating mode) indoor units, set it up a degree C or so higher, and as you can see, it’s humming along at ~450watts for the most part which is very different behaviour (in a good way). It doesn’t like them all on in above ~>5C temperatures it seems.

    It’s almost as if #A2A #MultiSplit is the very the *opposite* of #A2W #HeatPumps where more emitters/water volume is ideal.

  4. @kenbone @jesseb4me @stevewebster56

    At ~09:30 today in below screenshot I turned off all but one off the 2.8kW (heating mode) indoor units, set it up a degree C or so higher, and as you can see, it’s humming along at ~450watts for the most part which is very different behaviour (in a good way). It doesn’t like them all on in above ~>5C temperatures it seems.

    It’s almost as if #A2A #MultiSplit is the very the *opposite* of #A2W #HeatPumps where more emitters/water volume is ideal.

  5. @jesseb4me @stevewebster56 @kenbone

    Thanks for that. Useful info.

    It’s interesting to see such a difference between #A2A and #A2W heat pumps of similar output. Optimised differently?

    Conversely, on Nov 21st, it got down to 1-2 Celsius overnight, &his #A2A came into its own, & put my #A2W to shame. The Daikin really struggled with that temp &defrosted loads, but the Panasonic only defrosted once that night (half mile away from each other):

    Nov 21st got to 1 - 2 Celsius:

  6. @jesseb4me @stevewebster56 @kenbone

    Thanks for that. Useful info.

    It’s interesting to see such a difference between #A2A and #A2W heat pumps of similar output. Optimised differently?

    Conversely, on Nov 21st, it got down to 1-2 Celsius overnight, &his #A2A came into its own, & put my #A2W to shame. The Daikin really struggled with that temp &defrosted loads, but the Panasonic only defrosted once that night (half mile away from each other):

    Nov 21st got to 1 - 2 Celsius: