If
CFM falls between models, choose the larger model
Interior
Heat Load:
High means places with unusual heat sources from hot
equipment or processes, crowded conditions, etc.
Normal means no unusual heat sources - typical home or
office.
Exterior
heat Load:
Exposed means walls, roof exposed to sun, poor insulation,
etc.
Insulated means walls and roof well insulated and/or
shaded.
EXAMPLE
A
house in Phoenix AZ, 40 feet long by 30 feet wide with 8-foot
ceiling. Insulated, no unusual heat sources.
30
x 40 x 8 = 9,600 cubic feet
Zone:
2
Minutes
per Air Change: 2
9,600
/ 2 = 4,800 CFM
A
4800 CFM Cooler model is indicated.
