Changes

If you plan to spend your time in hot humid climates, you should consider a solution that incorporates a dehumidifier.

Ventilation rates can be expressed in several ways:

Maximum air velocity in ventilation ducts and vents should not exceed 2.6-3.3 ft/s (feet/second) (0.8-1.0 m/s) to minimise noise and differentials in air pressure. In comparison, air ducts for combustion systems can run as high as 40-66 ft/s (12-20 m/s).

Let’s work a complete example. Assume a salon of 1280 cubic feet. At 1.0 ACH this requires 21.3 CFM: