Save $10 on Filtrete Air Filters!

Costco offers the Filtrete 4-inch deep pleat air filters with a 1550 MPR and MERV 12 rating for just $33.99 when combining the sale price with the $10 manufacturer’s savings. This deal is valid from May 11 through June 7, 2026, while supplies last.

The original price was $44, so you're saving approximately 23% or $10 on this highly rated, allergy-friendly filter designed to capture pet dander, smoke, pollen, and large particles like lint and household dust. This is a practical and solid discount for a premium air purifier filter, especially from a trusted retailer like Costco.

The deal requires a limit of 10 per member, but does not involve complicated steps—just take advantage of the sale while supplies last. Considering the retail price and the quality of this filter, this is a very good deal for those looking to upgrade their indoor air quality.