Description of the infiltration characteristics for an opaque surface, fenestration unit, a thermal zone.
Data Type:
Constrained List
Category:
Unit of Measure:
None
Sector:
Commercial, Residential, Multifamily
Air Infiltration Description
| List Options | Option Definition | Unit of Measure | |
|---|---|---|---|
| Average | Average infiltration rate. | None | |
| Leaky | High infiltration rate, many places in the premises where outside air can come into the conditioned space. | None | |
| None | None | None | |
| Not applicable | Not applicable | None | |
| Other | Other | None | |
| Tight | Low infiltration rate. The 2012 IECC code requires between 3 and 5 ACH (air changes per hour) @ 50 pascals pressure for new construction (depending on the climate zone). The ENERGY STAR Certified Homes program requires between 3 and 6 ACH depending on the climate zone. | None | |
| Unknown | Unknown | None | |
| Very leaky | Very high infiltration rate. | None | |
| Very tight | Very low infiltration rate. The Passive House standard for air infiltration rate is <= 0.5 ACH at 50 pascals, which means the premises is virtually air tight. Infiltration levels this low usually require mechanical ventilation (with a heat exchange) to provide adequate interior air quality. | None |
Term ID: 6a5b8647-f8b2-40f6-b379-5a4d4adac2e8
CSV or XML files containing information such as definition, unique ID, and URL for each BEDES Term or List Option can be downloaded by clicking the appropriate orange button. The downloaded file can then be processed offline. Note that the XML documents are simply a "flat file" of terms, not a structured schema.
