21x23.5x5 Air Filter

Improve your indoor air quality with our efficient 21x23.5x5 air filters designed for optimal performance

Discover our selection of 21x23.5x5 air filters designed to enhance the air quality in your home or office. These filters effectively capture dust, allergens, and other airborne particles, ensuring a cleaner and healthier environment. With options to suit various HVAC systems, you can find the perfect fit for optimal performance and longevity.

Product List

Trane Perfect Fit Air Filter Pack of 2

Trane Perfect Fit Filters - 2 Pack

Filterbuy

Product Review Score

4.18 out of 5 stars

167 reviews

$89.60

Trane BAYFTAH23M MERV 11 Filter 2-Pack

Trane MERV 11 Filter Pair

Accumulair

Product Review Score

4.42 out of 5 stars

182 reviews

$96.00

AIRx MERV 11 Pleated HVAC Air Filters 6-Pack

MERV 11 HVAC Filters 6-Pack

Airx Filters

Product Review Score

4.35 out of 5 stars

220 reviews

$73.95

MERV 8 Pleated Air Filter 2-Pack 21.5x23.25

MERV 8 Pleated Filters 2-Pack

Filterbuy

Product Review Score

4.39 out of 5 stars

60 reviews

$38.94

Filtrete Pleated Air Filter 21.5x23.5x1, MERV 8

Filtrete MERV 8 Air Filter

Filtrete

Product Review Score

4.18 out of 5 stars

101 reviews

$55.99

Filter King 21x23.5 Air Filters - 4-Pack

21x23.5 Air Filter 4-Pack

Filter King

Product Review Score

4.18 out of 5 stars

59 reviews

$54.56

MERV 8 Pleated Air Filters 21x23.5x1 (6-Pack)

MERV 8 Pleated Filters 6-Pack

Filterbuy

Product Review Score

4.36 out of 5 stars

28 reviews

$89.04

Aerostar 21 1/2x23 5/16x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 21 1/2" x 23 5/16" x 3/4")

Aerostar 21 1/2x23 5/16x1 MERV 11 Pleated Air...

Aerostar

Product Review Score

4.29 out of 5 stars

52 reviews

$62.48

Filterbuy 21x21x5 Air Filter MERV 13 Optimal Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement for Rheem, Ruud, and Protech (Actual Size: 20.63 x 20.63 x 4.38 Inches)

Filterbuy 21x21x5 Air Filter MERV 13 Optimal...

Filterbuy

Product Review Score

4.38 out of 5 stars

196 reviews

$96.10

Honeywell - TRN2321T1 Trane Perfect Fit Replacement Filter 23.5" x 21" x 5"

Honeywell - TRN2321T1 Trane Perfect Fit Repla...

Honeywell

Product Review Score

4.81 out of 5 stars

69 reviews

$72.89

Filterbuy 21x27x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement for Trane Perfect Fit and American Standard (Actual Size: 20.56 x 26.13 x 4.97 Inches)

Filterbuy 21x27x5 Air Filter MERV 11 Allergen...

Filterbuy

Product Review Score

4.53 out of 5 stars

25 reviews

$95.02

Filter King 21.5x23.5x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 21.5 x 23.5 x .75"

Filter King 21.5x23.5x1 Air Filter | 4-PACK |...

Filter King

Product Review Score

4.68 out of 5 stars

56 reviews

$49.99

Our 21x23.5x5 air filters are designed to provide superior filtration to enhance the air quality in your home or office. Crafted from high-quality materials, these filters effectively trap dust, pollen, and other airborne particles, ensuring that you breathe cleaner air. With their precise dimensions, they seamlessly fit into your HVAC systems, making replacement a breeze.

When you invest in a 21x23.5x5 air filter, you're choosing not just a product, but a healthier environment for yourself and your loved ones. Regularly changing your air filter can help prolong the life of your heating and cooling systems, leading to energy savings and improved efficiency. Explore our selection today to find the perfect filter for your needs and experience the difference in air quality!