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Thread: fresh air

  1. #1
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    May 2012
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    fresh air



    hi guys
    Is its necessary to have fresh air duct for air-conditioners? because according to my experience i have seen fresh air ducts of package units but not so much for ducted systems.
    thanks



  2. #2
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    Feb 2007
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    Re: fresh air

    No, not necessary at all.

    However, us humans do require fresh air...



    .

  3. #3
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    Aug 2007
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    Re: fresh air

    Hi ?
    It depends on the size and application. If it is for domestic we can open a window or door a little but in a commercial situation there are requirements and the AIRAH Book has a good guide for different applications.

  4. #4
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    Re: fresh air

    hi..
    yes it is necessary to give the fresh air.mostly we give the fresh air in hotels and hospitals.

  5. #5
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    Re: fresh air

    in the uk - building regs req approx 10 ltr per min per person in a standard office enviroment- package units use this fresh air as free cooling when ambient outside air is cooler than the return air from the room, if cooling is req then the economiser opens and its cheaper to use fresh air and dirty ur filters than using the compressor

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