Date
Inquiry
If a home has a separate heating/cooling system and supply ventilation system, are MERV-8 filters required for both? Is it acceptable to have air filters on either?
Ruling
MERV-8 filters are required for both the heating and cooling distribution, as well as for any mechanically supplied outside air.
Updated 10/1/13 for rating system applicability.
Internationally Applicable
Off
Campus Applicable
Off