Cooling Load Check Figures Ashrae Pdf Apr 2026

Also, They are ±20% accurate at best. They are a filter , not a scale .

Find your building type. Calculate your W/m². Compare. Adjust. Only then do you have an engineering judgement you can defend. cooling load check figures ashrae pdf

Open your ASHRAE Handbook—Fundamentals. In the current edition (2021/2025), Chapter 18 (Nonresidential Cooling and Heating Load) contains the gold mine: Table 9 & 10 , typically titled “Cooling Load Check Figures for Typical Commercial Buildings.” Also, They are ±20% accurate at best

The 400 sq ft/ton Rule is Dead: How to Use ASHRAE Fundamentals to Sanity Check Your Cooling Loads cooling load check figures ashrae pdf

Stop using 400 ft²/ton (which equals ~85 W/m²). That ignores windows, people, and latitude.

But does that feel right?