Shaping Tomorrow's Built Environment Today

Lew Harriman, Fellow ASHRAE

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ASHRAE Course Instructor

Lew Harriman, Fellow ASHRAE


    Lew Harriman is the director of Research & Consulting at Mason-Grant in Portsmouth, NH. He is a Fellow of ASHRAE, and has over 42 years of experience with humidity control systems in a broad variety of commercial, industrial, and institutional applications.

    Lew was the lead author of both ASHRAE's Humidity Control Design Guide and the ASHRAE Guide for Buildings in Hot and Humid Climates. He is currently Chair of ASHRAE Task Group for developing a quantitative definition of a damp building (one which is damp enough to pose a health risk). He is also lead reviser for Chapter 62 (Moisture Management in Buildings) of the 2015 and 2019 ASHRAE Handbook—Applications. Lew's work has been selected for the ASHRAE Journal's Best Paper award twice and he has taught humidity control to more than 5000 technical professionals in North America, Asia, Europe, and the Caribbean in the last ten years.

    Courses Taught

    6 Hour

    Humidity Control I and II: Tips for HVAC Design and Practical Solutions to Existing Problems

    3 Hour

    Humidity Control I: Design Tips and Traps

    Humidity Control II: Real-World Problems and Solutions