Cooling Load Check Figures Ashrae Pdf -

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

Also, They are ±20% accurate at best. They are a filter , not a scale . cooling load check figures ashrae pdf

These tables provide (or Btu/h·ft²) ranges for total cooling loads based on building type and glazing percentage. Stop using 400 ft²/ton (which equals ~85 W/m²)

Let’s say you modeled a 2,000 m² (21,500 ft²) mid-rise office building (perimeter zones). Your software says total cooling load = 280 kW . They are a filter , not a scale

Blindly trusting the output is dangerous. Before you size a chiller or select an AHU, you need a rapid, engineering-based sanity check. While many engineers still whisper the old rule of thumb (400 sq. ft. per ton), ASHRAE Handbook—Fundamentals provides a much more accurate, albeit often overlooked, method for spot-checking results.