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ASHRAE Membership

ASHRAE membership is open to any person associated with heating, ventilation, air conditioning or refrigeration. ASHRAE is unique because its membership is drawn from a wide range of disciplines relating to the HVAC&R field. Over 55,000 individuals from more than 100 nations belong to the Society.

Discounts on Publications

ASHRAE members earn 15% off publications. Hundreds of titles are available including the complete collection of ASHRAE Standards including 90.1, 62.1 and 189.1.
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When you join ASHRAE, you are making an investment in yourself. When you become active in the Society by giving your time and sharing your knowledge, you get even more out of that investment.

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Each month, all over the world, ASHRAE chapters convene for an informational program featuring a speaker or topic that is key to professionals in the industry. Meet with your peers and share ideas.
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Resources & Publications

Thermodynamic Properties of Humid Air, Steam, Water, and Ice



Library of Psychrometric, Thermodynamic, and Transport Properties for Real Humid Air, Steam, Water, and Ice, I-P and SI Units

Property Functions
User's Guide

Based on ASHRAE RP-1485, Thermodynamic Properties of Real Moist Air, Fog, Ice Fog, Dry Air, Steam, Water, and Ice (March 12, 2009), the ASHRAE Library of Humid Air Psychrometric & Transport Property (LibHuAirProp) Functions, Excel version (FluidEXL) includes 60 property functions in both I-P and SI units. Ready for application, they work within Microsoft Excel®. Key features of the library include:
  • It works with "Real' versus "Ideal' Air
  • It updates the ASHRAE Hyland-Wexler and Nelson-Sauer Models Properties of liquid and ice fog can also be calculated
  • All latest IAPWS standards and NIST reference equations are used
  • It offers a wide range of validity Pressure: 0.01 < p < 10,000 kPa Temperature: -143.15 < t < 350 °C Humidity Ratio: 0 < W < 10 kgw/kga
  • It includes both water content and backwards functions and allows measurement of thermodynamic, saturation, and transport properties.

ASHRAE Combined Library of LibHuAirProp Functions for the 32-bit Excel, MATLAB, Mathcad, EES, DYMOLA and LabVIEW

Available Add-ons:

PLAY Video >

Play video Example of FluidMAT for Mathcad® > 
Play video Example of FluidLAB for MATLAB® >
Play video Example of FluidEXL for Excel® >
Play video Example of FluidEES for Engineering Equation Solver® >

For more information visit the website www.thermofluidprop.com

For purchasing information click here.

Multi-User Licenses

2-4 users:
5-10 users:
11-20 users:


Contact orders@ashrae.org for bulk or multi-user orders