3.1602.14 Heating, Ventilation, and Air Conditioning Supply, and Return Ducts and Plenums

Topic: 
Ducts
Subtopic: 
Duct Sealing
Desired Outcome: 
Connections between the crawl space and living space eliminated to improve indoor air quality ( IAQ IAQ Indoor air quality ) and efficiency of the distribution system
TitleSpecification(s)Objective(s)
3.1602.14a
Supply plenums (includes conditioned crawl spaces)

Crawl spaces that are used as heating and cooling supply plenums will not be allowed

Improve IAQ IAQ Indoor air quality in the living space

Eliminate connection between the crawl space and living space

3.1602.14b
Return plenums

Crawl spaces that are used as heating and cooling return plenums will not be allowed

Improve IAQ IAQ Indoor air quality in the living space

Eliminate connection between the crawl space and living space

Improve performance efficiency

3.1602.14c
Existing condition where crawl space is used as supply and/or return plenum

Condition will be corrected to provide supply and/or return plenums isolated from crawl space before work can continue

Improve IAQ IAQ Indoor air quality in the living space