Air Infiltration Value Units

The units of measure for the Air Infiltration Value field.

Data Type: 
Constrained List
Category: 
Unit of Measure: 
None
Sector: 
Commercial, Residential, Multifamily
List Optionssort descending Option Definition Unit of Measure
ACH Air changes per hour None
ACH50 Air changes per hour at 50 Pascals (Pa) pressure None
ACHnatural Air changes per hour at natural air leakage rate None
CFM Cubic feet per minute None
CFM25 Cubic feet per minute at 25 Pascals (Pa) None
CFM50 Cubic feet per minute at 50 Pascals (Pa) None
CFM75 Cubic feet per minute at 75 Pascals (Pa) None
CFMnatural Cubic feet per minute at natural pressure None
Effective Leakage Area Total area of all the gaps and cracks in a premises which contribute to infiltration. It is usually calculated in the U.S. at 4 pascals None
None None None
Not applicable Not applicable None
Other Other None
Unknown Unknown None
Term ID: 06aa5aca-890c-4b24-965a-edad902f16c6
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