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Merv ratings are a more quantifiable way to measure the effectiveness of a filter to remove contaminants from the air stream.
A filter with a MERV rating of 3 is a typical home furnace filter and is about 15% efficient at removing dust. A MERV 7 is one of the better residential furnace filters you can purchase and is about 25% efficient at removing dust. A MERV 12 filter is the top of the line filter for residential use and is about 70% efficient. There are multiple steps in between and there are steps above that are used in commercial applications. HEPA filters that you will see for residential use and in clean room applications are designed to remove 99.97% of all particulate 0.3 microns and above and are rated at a MERV 17. For reference, hair is 25 microns in diameter.
What else can I help you with?
What are the ratings and certificates for Swerve It Like Merv - 2003?
Swerve It Like Merv - 2003 is rated/received certificates of: Australia:M
How old was Merv Griffin at death?
Merv Griffin was born on July 6, 1925 and died on August 12, 2007. Merv Griffin would have been 82 years old at the time of death or 90 years old today.
What nicknames does Merv Hughes go by?
Emlyn Hughes went by Crazy Horse.
How tall was merv griffin?
5'10'' 5'10''
Who made the song I've got a lovely bunch of coconuts?
Merv Griffin
What are the ratings and certificates for Swerve It Like Merv - 2003?
Swerve It Like Merv - 2003 is rated/received certificates of: Australia:M
What are the ratings and certificates for Seinfeld - 1989 The Merv Griffin Show 9-6?
Seinfeld - 1989 The Merv Griffin Show 9-6 is rated/received certificates of: Australia:PG Canada:PG (video rating)
What are some tips for cleaning ducts?
You should always be sure to change your air filter regularly. make sure to use a minimum of MERV-7 filter for optimal results, or your coil could end up getting hit with debris the filter left behind.
Who invented the game jeopardy?
merv griffen
How tall is Merv Rettenmund?
Merv Rettenmund is 5' 10".
When did Merv Rylance die?
Merv Rylance died in 1983.
When did Merv McIntosh die?
Merv McIntosh died in 2010.
When was Merv McIntosh born?
Merv McIntosh was born in 1922.
When was Merv Johnson born?
Merv Johnson was born in 1923.
When was Merv Pumpkinhead created?
Merv Pumpkinhead was created in 1989.
When did Merv Inverarity die?
Merv Inverarity died in 1979.
When was Merv Inverarity born?
Merv Inverarity was born in 1907.
