Indoor Air Quality A Homeowner’s Guide How to protect your heating and air conditioning equipment and enjoy cleaner air in your home
Clean air is determined by the efﬁciency of a ﬁlter or an air cleaner.
Filters have an efﬁciency rating called MERV.
(Minimum Efﬁciency Reporting Value)
MERV ratings are used to rate the ability of a ﬁlter to remove particles from the air as they pass through the ﬁlter.
The higher the MERV rating, the cleaner the air!
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