RESOURCES
Day 3 HVAC: Resources for Commercial HVAC Professionals
Air, Water, Refrigerant (AWR)
AWR
AWR is a diagrammatic framework for thinking about HVAC equipment.
Simply put, AWR breaks down HVAC airside or hydronic equipment into its three working-fluid loops: air, water, and refrigerant.
Picture This
Picture This is a collection of HVAC project and equipment pictures to help "picture" what a particular system looks like.
- 100T Air-Cooled Chiller - Credit: Volunteer Mechanical
- 2 Million Btu/h Boiler Room - Qty. (5) 400,000 Btu/h Boilers - Credit: Jake Cullinane
- ... More Coming Soon ...
Publications
ASHRAE Journal
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March 2026 Fundamentals Column - "Hot Gas Havoc: Clarifying Hot Gas Reheat & Hot Gas Bypass"
- Copyright 2026 ASHRAE. Published in ASHRAE Journal, Volume 68, No. 3, March. Reprinted by permission at day3academy.com. This article may not be copied and/or distributed electronically or in paper form without permission of ASHRAE. For more information, visit www.ashrae.org.
ASHRAE Journal Podcast
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60. A Crash Course on Load Calculations
- Join host Matt Price and guest Nathan Kegel as they discuss load calculations, how they tie into evolving ASHRAE standards, and practical takeaways to optimize projects and avoid oversizing equipment.