Ratings & Reviews for Filtrete 21 x 21 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this filter for its perfect fit in HVAC systems, especially for hard-to-find sizes unavailable elsewhere. Reviewers consistently note effective dust trapping and improved air quality within hours of installation, with the MERV 8 rating balancing strong filtration and airflow. Many appreciate the reliable availability and value. A few mention the cardboard frame feels rigid or the filter material slightly delicate during installation, but these minor concerns are vastly outweighed by widespread satisfaction and loyalty.
Customer review summary generated by AI, including incentivized reviews.Easy fit to unit
Would RecommendEasy install
From 14 x 18 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
Hard to find size in stock at Lowes
Would RecommendThis can be a tricky size to find and I am happy lowes stocks them. These filters work great and I live in florida where we need to change them often since we run our air conditioners most of the year. I can count on these to do a good job and I am happy Lowes keeps them in stock. The buy on line and pick up in store saves me so much time and money in gas.
From 15.5 x 15.5 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
air filters
The air filters arrived quickly and the fulfillment team was very helpful
Is the arrow on the correct side? Mesh is facing t
Would RecommendI love the quality but when inserting it my ac guy said to always put the arrow facing down towards the air flow. I also read that the wire mesh should be on the inside. I have been spending hours trying to figure it out since the mesh is on the outside away from the air flow. i also read that if you install it incorrectly it can do damage to your ac which defeats the purpose! Dear Filtrate, what is the correct answer? Did you print the arrow wrong? Is there an error? How should I insert it?
Best price
Maintain the AC and house air clean
From 21.5 x 23.5 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
Ez on the unit filter
Perfect thickness
From 20 x 22 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
Great value
Would RecommendThe product is a great value and a fair price.
From 17 x 22 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
Good as the high end.
Would RecommendThe low end filters work better in my AC system. The price for six filters was good. I have bought them in the past.
From 22 x 22 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
Scarce
Would RecommendFilter works great. But Lowe's seems to be the only place to find this size. I hope it's not being phased out.
From 17 x 21 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
It works great
Would RecommendIt’s the size I have to order online. I can’t find the size in stores
From 16.5 x 21.5 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser
One of the only places to find this size
Would RecommendIn stock
From 16.5 x 21.5 x 1 MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter Verified Purchaser