That A/C is running..have you changed your filters???

If you have pets, especially ones that shed, you probably already know the importance changing your air conditioning filters. When I was younger, my folks were always replacing filters using those blue filament-type that are super-cheap. The old adage of you get what you pay for would now apply. They are pretty much useless, especially at removing the smallest particles from the air.

To be perfectly honest, I consulted with Tim Holt of Holt Filters in Clearwater (Off Hercules by the RR tracks) about the efficacy of filters. He said the #1 way to completely remove allergens and unwanted particles is a mobile filter with charcoal. Unfortunately, the model he recommended was about $500. So what's a homeowner to do???

First, consider the MERV rating. Filters are rated 1 - 16 (you might see that number in hundreds, such as MERV rating 6 as "600"). Below is a summary of MERV ratings:

MERV ratings range from 1 - 16 and measurements are in microns. Some of the common particles related to MERV ratings are pet dander, insecticide dust, smog, dust, viruses, wood, tobacco smoke, spores, bacteria and pollen.
Some of the most common filters found in residential use only have a merv rating of 1 to 4. These are typically disposable panel type filters and do not do a good job of filtering the air because they will not stop particles smaller than 10 microns.

Merv 5 to 8 rated filters are a better choice and are more commonly found in commercial applications. These filters will collect particles as small as 3 microns and are a good choice for home owners also.

Filters with a merv rating of 9 to 12 are used in commercial and industrial applications and will stop particles in the 1 to 3 micron range. These filters are a great choice for home owners who want the best dust control possible. When using filters with Merv 9 ratings and above it is important to clean or replace them when recommended by the manufacturer because they will have a negative effect on air flow when they become dirty. This can lead to performance problems and decreased operating efficiency.

The most efficient filters have merv ratings of 13 to 16 and will stop particles as small as .3 microns. These filters are used in hospitals and other super clean environments.

Long story short, high efficiency filters are very expensive, especially if you are replacing them every 2-3 months. Cut to Holt Filters in Clearwater...their custommade MERV 11 filters are VERY cost-effective...between $4 & $5 depending on size. So, gather all your sizes, call Holt Filters at 727.449.8448, and order those filters. I spent $45 and I won't have to buy anymore for the next year or so.