When calculating CFM for make-up air, which of the following factors is NOT considered?

When calculating the required Cubic Feet per Minute (CFM) for make-up air, the size of the home is not a direct factor in the determination process. Instead, calculations typically focus on specific aspects that impact air exchange needs, such as the presence of certain spaces and the amount of air being expelled from those spaces.

The number of bedrooms is significant because it helps assess how many occupants may generate indoor pollutants and require fresh air. The presence of a garage is also important, as garages can introduce contaminants and impact air quality, necessitating additional make-up air to maintain a balanced system. Kitchen exhaust requirements are critical too, as kitchen exhaust hoods pull a considerable amount of air out of the home during cooking, which must be compensated for by make-up air.

Since the direct impact of size is less about the immediate air quality needs and more about overall capacity and design considerations, it is not included in the direct calculations for CFM for make-up air. Thus, focusing on elements that demand immediate attention to balance air pressure and ensure healthy air quality is crucial for these calculations.