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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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Heating and cooling: Heat Pumps - wall Mounted

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  1.  
    I bought my last 2 air-air heat pumps from appliancesdirect but they're out of stock for 6 weeks

    Any recommendation on suppliers? I need one with easy fit pipework

    Thanks
  2.  
    Anyone have a supplier?
  3.  
    Keen to get sorted as for my wife's new shop
    • CommentAuthorneelpeel
    • CommentTimeNov 24th 2022 edited
     
    I suspect you are destined for Google my friend.

    I can't vouch for any vendors, but when I was looking these were the cheapest places for the units I was interested in...
    air-heatpumps.com
    orionairsales.co.uk
    www.carltonservices.co.uk
    www.saturnsales.co.uk
    www.acsalesdirect.co.uk

    The warranties varied greatly from supplier to supplier so be wary and probably best calling them to double-check stock. Prices in the EU seemed generally cheaper than here, but none offer shipping to UK.
    • CommentAuthorcjard
    • CommentTimeNov 25th 2022
     
    Must it be new?
    • CommentAuthorcjard
    • CommentTimeNov 25th 2022
     
    And didn't John Guest make all pipe work easy fit? :)
    • CommentAuthorborpin
    • CommentTimeNov 25th 2022 edited
     
    Posted By: VictorianecoI bought my last 2 air-air heat pumps from appliancesdirect but they're out of stock for 6 weeks
    Interested to know which one you used in the first place.
  8.  
    Can you just buy an air-air heatpump online - thought you needed to have an F-gas certificate?
    • CommentAuthorowlman
    • CommentTimeNov 25th 2022 edited
     
    Posted By: WillInAberdeenCan you just buy an air-air heatpump online - thought you needed to have an F-gas certificate?




    Quite a few suppliers will only supply to refrigeration engineers i.e F- gas qualified personnel.
    Refrigeration, so called "easy fit" pipework does I think exist although I also believe, you may need special crimping tools. Many refrigeration engineers, however, don't trust it and prefer brazed joints especially when subjecting the pipework to the very high-pressure testing, before commissioning. Manufacturer compressor warranty may also be affected down the line, if on return to base inspection it's discovered that the said pipework wasn't Nitrogen flushed prior to refrigerant filling.

    Potential for refrigerant leakage is the reason for the F Gas qualification, also the initial supply of refrigerant gasses. Although many Air-Air units come pre charged the final operating pressure and safe removal of any excess gas from the pre charge is another reason for the F-Gas qual.
    In this instance DIYing it, is NOT an option IMO.
    • CommentAuthorphiledge
    • CommentTimeNov 25th 2022
     
    OP has already bought 2 units, of an unknown type, so presumably has a plan for install??
  11.  
    Installation of the 'easy fit' units is DIY


    John Guest don't do air conditioning fittings....

    It is called easy fit because the units come pre gassed, and you essentially just connect the pipes and the gas transfers from the inside unit to the outdoor unit and fills the pre-defined pipework

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