Discover our selection of 21.5x23.5x1 air filters, designed to enhance your indoor air quality and keep your HVAC system running efficiently. These high-performance filters capture dust, pollen, and other airborne particles, ensuring a cleaner and healthier living environment for you and your family. Upgrade your system with our reliable options, and breathe easier knowing you're making a smart choice for your home.
21.5x23.5x1 Air Filter
Enhance your indoor air quality with our premium 21.5x23.5x1 air filters designed for optimum performance
Product List
Glasfloss ZL 21.5x23.5x1 MERV 10 (FPR 5-6) AC...
Glasfloss
Product Review Score
4.27 out of 5 stars
200 reviews$72.95
Upgraded KFAFK0412XXL filter replacement - 21...
Product Review Score
4.69 out of 5 stars
133 reviews$68.65
Filter King 21.5x23.5x1 Air Filter | 6-PACK |...
Filter King
Product Review Score
4.94 out of 5 stars
160 reviews$72.99 $69.34
21x23x1 MERV 13 Filters (5-Pack)
Filterbuy
Product Review Score
4.13 out of 5 stars
227 reviews$113.75
21.5x23.5 MERV 13 Filters - 6-Pack
Filterbuy
Product Review Score
4.3 out of 5 stars
109 reviews$117.90
21.5x23.5 MERV 8 Filters 3-Pack
Filterbuy
Product Review Score
4.76 out of 5 stars
189 reviews$39.96
Our 21.5x23.5x1 air filters are designed to provide optimal air quality for your home or office. These filters effectively capture dust, pollen, and other airborne particles, ensuring that you breathe clean and fresh air. With a perfect fit for standard HVAC systems, upgrading your air filter can enhance the efficiency of your heating and cooling systems.
Crafted from high-quality materials, these filters not only improve indoor air quality but also help extend the lifespan of your HVAC equipment. Regular replacement of your air filter is crucial, as clogged filters can lead to higher energy costs and system malfunctions. Browse our selection today to find the ideal 21.5x23.5x1 air filter that meets your needs and keeps your environment healthy.