Discover our selection of 21x21.5x5 air filters, designed to enhance the air quality in your home or office. These high-performance filters effectively trap dust, allergens, and other airborne particles, ensuring that you breathe cleaner, fresher air. With various options available, finding the perfect fit for your HVAC system and specific needs is easy and convenient.
21x21.5x5 Air Filter
Discover superior air quality with our 21x21.5x5 air filters designed for maximum efficiency and performance
Product List
20x21.5x1 MERV 8 Filters - 12 Pack
Filterbuy
Product Review Score
4.76 out of 5 stars
71 reviews$119.64
Filtrete 16.5x21.5 Air Filter 4-Pack
Filtrete
Product Review Score
4.52 out of 5 stars
213 reviews$55.99 $39.88
MERV 11 Pleated Air Filters 6-Pack
Aerostar
Product Review Score
4.17 out of 5 stars
68 reviews$64.94
MERV 8 Pleated Air Filters 4-Pack
Filter King
Product Review Score
4.1 out of 5 stars
204 reviews$50.36
MERV 11 Pleated Filters 6-Pack
Filterbuy
Product Review Score
4.83 out of 5 stars
189 reviews$82.14
Finding the right air filter can make a significant difference in maintaining the air quality of your home or workspace. Our 21x21.5x5 air filters are designed to fit snugly in your HVAC system, ensuring efficient filtration and optimal airflow. With a range of MERV ratings available, you can choose the perfect filter to capture dust, allergens, and other airborne particles, allowing you to breathe easier.
Not only do these air filters contribute to a healthier environment, but they can also help prolong the life of your HVAC system by reducing strain on the unit. Regular replacement of your air filters can enhance energy efficiency and lower utility costs, making it a smart investment for any property owner. Explore our selection today and enjoy cleaner air with our high-performance 21x21.5x5 air filters.