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!