Air Source heat Pump

Discussion in 'Renewable Energy' started by Glomulinman, Dec 21, 2018.

  1. Glomulinman

    Glomulinman New Member

    Is it really a two year payback as claimed in the farmers guardian, 23/11/18? Surely too good to be true. Welcome feedback on this.
     
  2. jack6480

    jack6480 Member

    Location:
    south lancs!
    No idea but mine was expensive to install and electric bills expensive
     
    Last edited by a moderator: May 19, 2019
    Mdt likes this.
  3. Exfarmer

    Exfarmer Member

    Location:
    Bury St Edmunds
    I will soon be cried down, but my take is, if it seems too good itis too good..
    In fact I would say it is not worth touching with a barge pole!
     
    Last edited by a moderator: May 19, 2019
  4. Shutesy

    Shutesy Moderator

    Location:
    Stansted
    Did you intend to set your email as your username for all to see?
     
    Last edited by a moderator: May 19, 2019
    Walton2 and Exfarmer like this.
  5. Mdt

    Mdt Member

    Another one for very expensive electric Bill's!
     
  6. dazza b

    dazza b Member

    Location:
    Lancaster
    It’s a back to front fridge that seems electric hungry defo to good to be true
     
    john432 likes this.
  7. Farmer Palmer

    Farmer Palmer Member

    Location:
    County Durham
    I don’t know about the article you refer to but they are great when combined with underfloor heating and a well insulated property. If you are thinking of a drafty farmhouse forget it
     
    Last edited: Dec 22, 2018
  8. Glomulinman

    Glomulinman New Member

    I thought the room with aa biomass boiler is hot and recovering the heat may be viable
     
  9. john432

    john432 Member

    Location:
    Carmarthenshire
    They just use the air or the underground pipes to dump, get rid of the cold, and keep the heat in the house. Wales certainly isn't Iceland. No hot springs here!
     
  10. jack6480

    jack6480 Member

    Location:
    south lancs!
    Could work, I’m no expert but sounds a good idea
     
    Last edited by a moderator: May 19, 2019
  11. Exfarmer

    Exfarmer Member

    Location:
    Bury St Edmunds
    You would needto size tour pump very precisely, if you try taking too much out all you will do isfreeze the condenser.
     
  12. akaPABLO01

    akaPABLO01 Member

    Fake news. Installs with about 5 rad standard upgrade can be in the region of £13,000.
    The maximum you can receive from RHI is £10,000

    Air Source heat pumps sized and installed correctly are one of the cheapest heating systems on the market. New ultra quiet Mitsubishi ashp have an efficiency of 3.65/1. So if you pay £0.16 for an electric unit the heat is £0.043p.

    LPG average is 8p
    Mains connected gas 4.2p
    Oil (volitile market) 5.7p/7.6p
    Biomass pellets 4.6p
    Coal 3p

    We have lots of enquires regarding ashp and gshp, hotly sought after home upgrades.
     
    Last edited by a moderator: May 19, 2019
    Grassman likes this.
  13. jack6480

    jack6480 Member

    Location:
    south lancs!
    So 4.3p

    If you have your own solar then surely it’s happy days
     
  14. akaPABLO01

    akaPABLO01 Member

    4.3 if you pay 16p leccy

    Solar will help but not tremendously as it’s a heating product needed in winter, but it will contribute.
     
  15. jack6480

    jack6480 Member

    Location:
    south lancs!
    What happens to all the cold air produced?
     
  16. akaPABLO01

    akaPABLO01 Member

    It’s recycled back into the atmosphere to await thermal heating.

    If you’re thinking of capturing it the system doesn’t exhaust cold air long, so not worth rigging up a cool exchange system.
     
  17. john432

    john432 Member

    Location:
    Carmarthenshire
    Wasted... such a stupid system, be ok if there was a need for cold storage ,and heat for a building or hot water the same time.
     
  18. Exfarmer

    Exfarmer Member

    Location:
    Bury St Edmunds
    The Americans widely use combined air con plants producing hot water, but that is not a lot of use here in mid winter :)
     
    steveR likes this.
  19. jack6480

    jack6480 Member

    Location:
    south lancs!
    That would be really good! Surely with solar to power this then it’s cheap
     
  20. mikep

    mikep Member

    Beware quotes from installers without knowing the temperature at which the efficiency ratio was quoted.
    In mild winter weather they are ok but as the temp drops so does the efficiency. In cold weather you can be down to 2:1 or less so it's not so cheap. Need to work out on average figures for monthly temp to get true costs.
    I was seriously looking at it for a new build until I talked to a few plumbers who all said it's great but make sure you have oil back up!!!!?
     
    tommyurray, Fowler VF and Exfarmer like this.

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