Air Lite Psychrometric Calcs




    Psychrometric calculator for HVAC engineers, designers, technicians, commissioning agents, and maintenance personnel. SI and IP units are supported.

    - Altitude
    - Dry Bulb Temperature

    And either:
    -Wet Bulb Temperature
    -Relative Humidity
    - Dew Point Temperature

    To Calculate:
    -Wet Bulb Temperature
    -Relative Humidity
    -Dew Point Temperature
    -Atmospheric Pressure
    -Barometric Pressure
    -Humidity Ratio
    -Specific Volume
    -Vapor Pressure

    Calculations are made using The American Society of Heating Refrigeration and Air Conditioning Engineers (ASHRAE) Fundamentals 2009 ideal gas equations.

    You must hit the clear button in between calculations. If more than three properties are filled in the application will default to using wet bulb as the humidity input.

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    Users review

    from 377 reviews



    Users comments for Air Lite Psychrometric Calcs

    A Google user

    by A Google user

    Oct 08, 2017  |  "Poor"

    Mode of data input is not useful for mechanical engineering analysis.

    Roshan Ramesh

    by Roshan Ramesh

    Apr 24, 2017  |  "Awesome"


    Victor Mendez

    by Victor Mendez

    Sep 22, 2016  |  "Awesome"

    Unused it every day in a painter so need to know conditions I love thos app

    David Faunce

    by David Faunce

    Aug 03, 2016  |  "OK"

    You don't always need dry-bulb to solve. On a psychometric chart you can determine all properties from RH and Enthalpy or Wet-bulb and Humidity Ratio, over 20 different combinations most of which do not include dry-bulb.

    Jagmohan Trehan

    by Jagmohan Trehan

    May 24, 2016  |  "Awesome"

    It is handy and very useful in troubĺe shooting.

    rizqillah salim

    by rizqillah salim

    Jan 15, 2015  |  "Great"