S.D. Admin. R. 44:70:10:22
Current through Register Vol. 51, page 67, December 16, 2024
A ventilation system using a recirculated central air system must be equipped with a filter bed. The filter bed must be located upstream of the conditioning equipment and must have a minimum efficiency of MERV 7. These filter efficiencies must be warranted by the manufacturer and must be based on the ASHRAE 52.2, 2012 edition, American Society of Heating, Refrigeration, and Air Conditioning Engineers.
S.D. Admin. R. 44:70:10:22
General Authority: SDCL 34-12-13(1)(3)(4).
Law Implemented: SDCL 34-12-13(1)(3)(4).
"ASHRAE 52.2," 2012 edition, American Society of Heating, Refrigeration, and Air Conditioning Engineers. Copies are available at no cost at https://ierga.com/hr/wp-content/uploads/sites/2/2017/10/ASHRAE-52.2-2012.pdf.