Donald P. Dick Air Conditioning Blog: Posts Tagged ‘MERV is a rating system’

Shopping For A MERV Filter: So What Do All Those Numbers Mean, Anyway?

Thursday, September 1st, 2011

If you have been shopping for a new air filter for your HVAC system, you may have noticed that the filters each come with a MERV number of between 1 and 20. But what do those numbers mean, anyway?

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