SpiroPure 21 x 33 x 2 MERV 13 Pleated Filter Air Filters - Made in USA (6 Pack)

Find a value pack of high quality replacement furnace filters from SpiroPure. SpiroPure pleated AC & Furnace filters are made in the USA and are the perfect choice for most standard residential and light commercial air conditioner and furnace units. Please measure your existing furnace filter before ordering to ensure that this size will be compatible with your AC & furnace system.

MERV 13 rated filters are a great choice for inpatient hospitals, general surgery, and other commercial spaces that require an increased filtration of airborne contaminants. The 85% of better efficiency for particles 3 to 10 micron in size, plus the added reduction of particles 1 to 3 microns in size at a 90% or better efficiency, means MERV 13 filters can assist in the reduction of bacteria in addition to dust, mold spores, and other common airborne contaminants.

SpiroPure MERV 13 Pleated Filters remove the following household contaminants: 

• Lint & Dust
• Dust Mite Debris
• Pollen
• Mold Spores
• Pet Dander
• Auto Emissions
• Smoke
• Tobacco
• Bacteria
• Smoke

We recommend replacing your furnace filter every 2 to 3 months for maximum efficiency and cooling and heating system life. A dirty filter restricts airflow, which can put too much strain on the system. As a result, there can be motor burnout and an overheated system. The leading cause for HVAC system failure is a dirty air filter. Due to smaller pore sizing in the filter media, higher efficiency filters may require replacement more often to further reduce additional strain on the heating and cooling system.