Residential Air Filters


Increase the efficiency of your home’s heating and air conditioning system with high-quality replacement filters from AirFiltersNW. The improved air flow helps reduce your home’s energy consumption – and your power bills. Because our air filters last longer than lower-quality products, you’ll save money on replacement filters. Some of the filters we offer can even be cleaned and reused, which saves you even more.

You’ll also appreciate the environmental advantages our products offer along with our GreenGuard indoor air quality certification. Lower energy consumption helps reduce the amount of greenhouse gasses released into the atmosphere. Since our filters last longer than ordinary filters, fewer of them end up in landfills. Higher-quality filters can even eliminate the need for two-stage filtration, further reducing the number of used filters occupying landfill space. And by trapping more contaminants, AirFiltersNW filters improve air quality.

You can order the air filters you need by simply selecting from the products shown below. Through partnerships with several freight companies, we can ship our filters to virtually any destination worldwide. If you have any questions, please contact us. We’ll be happy to help you.

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Mac Users: Press APPLE + F to bring up the search window to enter a specific part number.


Short Cut to Humidifiers

  • Heavy duty die cut frames
  • Moisture resistant
  • Synthetic filter media
  • Wire reinforced pleats
  • Custom sizes available
  • Made in the USA
Class Pleated Filters Product Part Number Price Buy Now Case Quantity Case Price Buy Now
MERV-8 15 7/8" x 19 1/2" x 4 3/8" Honeywell replacement 1451519040308-R $30.00
3 $81.00
MERV-8 15 3/4" x 24 3/4" x 4 3/8" Honeywell replacement 1451524040308-R $30.00
3 $81.00
MERV-8 20" x 24 5/8" x 4 1/4" Honeywell replacement 1452024040308-R $30.00
3 $81.00
MERV-8 19 1/2" x 19 1/2" x 4 1/4" Honeywell replacement 1451919040308-R $30.00
3 $81.00
MERV-8 15 3/4" x 24 1/4" x 3" Trion Air Bear replacements 1451524030308-R $19.70
6 $106.38
MERV-8 19 3/4" x 24 1/4" x 4 7/8" Trion Air Bear replacements 1451924040308-R $30.00
3 $81.00
MERV-8 15 3/4" x 24 3/4" x 4 3/8" Trion Air Bear replacements 1451524040308-R $30.00
3 $81.00
MERV-8 16 1/4" x 25 3/4" x 5" White-Rodgers 1451625050308-R $30.45
3 $82.22
MERV-8 20 1/4" x 25 13/16" x 5" White-Rodgers 1452025050308-R $30.45
3 $82.22
                 
         

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  • Synthetic Gray Matter carbon Media
  • Odor control with particulate filtration
  • Heavy duty die cut frames
  • Moisture resistant
  • Synthetic filter media
  • Wire reinforced pleats
  • Custom sizes available
  • Made in the USA
Class Pleated Filters Product Part Number Price Buy Now Case Quantity Case Price Buy Now
MERV-8
w/ odor control
15 7/8" x 19 1/2" x 4 3/8" Honeywell replacement 1451519040321-R $45.35
3 $122.45
MERV-8
w/ odor control
15 3/4" x 24 3/4" x 4 3/8" Honeywell replacement 1451524040321-R $45.35
3 $122.45
MERV-8
w/ odor control
20" x 24 5/8" x 4 1/4" Honeywell replacement 1452024040321-R $45.35
3 $122.45
MERV-8
w/ odor control
19 1/2" x 19 1/2" x 4 1/4" Honeywell replacement 1451919040321-R $45.35
3 $122.45
MERV-8
w/ odor control
15 3/4" x 24 1/4" x 3" Trion Air Bear replacements 1451524030321-R $32.10
6 $86.67
MERV-8
w/ odor control
20" x 24 5/8" x 4 1/4" Trion Air Bear replacements 1451924040321-R $45.35
3 $122.45
MERV-8
w/ odor control
15 3/4" x 24 3/4" x 4 3/8" Trion Air Bear replacements 1451524040321-R $45.35
3 $122.45
MERV-8
w/ odor control
16 1/4" x 25 3/4" x 5" White-Rodgers 1451625050321-R $47.00
3 $126.90
MERV-8
w/ odor control
20 1/4" x 25 13/16" x 5" White-Rodgers 1452025050321-R $47.00
3 $126.90
                 
         

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  • One of the highest MERV rating for media filters in the industry- MERV 11
  • High Allergen Filtration
  • Low air flow resistance
  • Great dust holding capacity
  • Particulate matter removal down to .3 microns
  • Removes bacteria, spores, pollen, tobacco smoke, dust, lint and pet dander
Class Pleated Filters Product Part Number Price Buy Now Case Quantity Case Price Buy Now
MERV-11 24 7/8" x 6" Space-Guard 1452424060311-R $36.15
6 $195.21
MERV-11 27 1/8" x 6" Space-Guard 1452727060311-R $42.20
6 $227.88
                 
         

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  • Synthetic Gray Matter carbon media
  • Odor control with particle filtration
  • Heavy duty moisture resistance die cut frame
  • Wire reinforced pleats
  • Custom sizes available
  • Made in the USA
  • 1" Pleated Carbon Filters
  • 2" Pleated Carbon Filters
  • 4" Pleated Carbon Filters
Class 1" Normal Size Part Number Price Buy Now Case Quantity Case Price Buy Now
MERV-8
w/ odor control
10 x 10 x 1 1451010010321 $6.40
12 $69.12
MERV-8
w/ odor control
10 x 20 x 1 1451020010321 $7.15
12 $77.22
MERV-8
w/ odor control
12 x 20 x 1 1451220010321 $7.90
12 $85.32
MERV-8
w/ odor control
14 x 20 x 1 1451420010321 $8.25
12 $89.10
MERV-8
w/ odor control
14 x 25 x 1 1451425010321 $9.50
12 $102.60
MERV-8
w/ odor control
15 x 20 x 1 1451520010321 $9.00
12 $97.20
MERV-8
w/ odor control
16 x 16 x 1 1451616010321 $8.70
12 $93.96
MERV-8
w/ odor control
16 x 20 x 1 1451620010321 $8.70
12 $93.96
MERV-8
w/ odor control
16 x 25 x 1 1451625010321 $9.40
12 $101.52
MERV-8
w/ odor control
20 x 20 x 1 1452020010321 $10.40
12 $112.32
MERV-8
w/ odor control
20 x 24 x 1 1452024010321 $11.45
12 $123.66
MERV-8
w/ odor control
20 x 25 x 1 1452025010321 $12.00
12 $129.60
MERV-8
w/ odor control
24 x 24 x 1 1452424010321 $13.40
12 $144.72
               
Class 2" Normal Size Part Number Price   Case Quantity Case Price Buy Now
MERV-8
w/ odor control
10 x 20 x 2 1451020020321 $9.30
12 $100.44
MERV-8
w/ odor control
12 x 20 x 2 1451220020321 $10.45
12 $112.86
MERV-8
w/ odor control
12 x 24 x 2 1451224020321 $11.20
12 $120.96
MERV-8
w/ odor control
14 x 20 x 2 1451420020321 $11.30
12 $122.04
MERV-8
w/ odor control
14 x 25 x 2 1451425020321 $12.35
12 $133.38
MERV-8
w/ odor control
15 x 20 x 2 1451520020321 $11.60
12 $125.28
MERV-8
w/ odor control
16 x 20 x 2 1451620020321 $11.95
12 $129.06
MERV-8
w/ odor control
16 x 24 x 2 1451624020321 $14.35
12 $154.98
MERV-8
w/ odor control
16 x 25 x 2 1451625020321 $14.50
12 $156.60
MERV-8
w/ odor control
18 x 24 x 2 1451824020321 $14.90
12 $160.92
MERV-8
w/ odor control
18 x 25 x 2 1451825020321 15.30
12 $165.24
MERV-8
w/ odor control
20 x 20 x 2 1452020020321 $14.50
12 $156.60
MERV-8
w/ odor control
20 x 24 x 2 1452024020321 $16.50
12 $178.20
MERV-8
w/ odor control
20 x 25 x 2 1452025020321 $16.50
12 $178.20
MERV-8
w/ odor control
24 x 24 x 2 1452424020321 $17.45
12 $188.46
MERV-8
w/ odor control
25 x 25 x 2 1452525020321 $19.05
12 $205.74
               
Class 4" Normal Size Part Number Price   Case Quantity Case Price Buy Now
MERV-8
w/ odor control
12 x 24 x 4 1451224040321 $16.95
6 $91.53
MERV-8
w/ odor control
16 x 20 x 4 1451620040321 $17.80
6 $96.12
MERV-8
w/ odor control
16 x 25 x 4 1451625040321 $20.40
6 $110.16
MERV-8
w/ odor control
18 x 24 x 4 1451824040321 $21.30
6 $115.02
MERV-8
w/ odor control
20 x 20 x 4 1452020040321 $20.55
6 $110.97
MERV-8
w/ odor control
20 x 24 x 4 1452024040321 $22.40
6 $120.96
MERV-8
w/ odor control
20 x 25 x 4 1452025040321 $22.90
6 $123.66
MERV-8
w/ odor control
24 x 24 x 4 1452424040321 $24.90
6 $134.46
MERV-8
w/ odor control
25 x 29 x 4 1452529040321 $26.85
6 $144.99
               
       

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Specifications

Unit Size
12” high x 14” wide x 10” deep
Plenum Opening
9-1/2” high x 9-1/2” wide
Bypass Opening
6“ diameter
Solenoid
24 VAC, 6 watts
Evaporative Pad
10-3/4” high x 10-3/4” wide x 1-5/8” deep

  • Unique snap lock cover allows for quick maintence
  • Durable fiberglass construction, resists rust, corrosion and warping
  • Uses patented “White Water Pads”
  • Output Capacity of 19.5 gallons per day
  • Uses 50% less water
Moisture Output Capacity

  • LBS/hour - 6.78
  • Gallons/hour - 0.82
  • Gallons/day - 19.5
  • The Green model 3200 by-pass humidifier has an output capacity of 19.5 gallons per day
  • This unique design is easy to install and has a snap lock cover for quick maintenance
  • The Model 3200 is constructed of durable fiberglass which resists rust, corrosion and warping
  • Combined with our patented White Water Pads the Model 3200 substantially reduces overall water and power consumption
Size Square Footage Product Part Number Price Buy Now
14 x 14 x 10 MAX.SQ.FT.:4,620 Green Humidifer 145GH3200 $260.00
           
   

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Specifications

Unit Size
13-3/4” high x 13-3/4” wide x 6” deep
Plenum Opening
11” high x 11” wide
Bypass Opening
None required
Solenoid
24 VAC, 7.5 watts
Evaporative Pad
11-1/2” high x 11-1/2”wide x 1-5/8” deep

  • Patented Air diverter eliminates need for a bypass
  • One opening on the plenum
  • Durable plastic construction, resists rust, corrosion and warping
  • Uses patented “White Water Pads”
  • Output Capacity of 18 gallons per day
Moisture Output Capacity

  • LBS/hour - 6.78
  • Gallons/hour - 0.82
  • Gallons/day - 19.5
  • The Green model 3200 by-pass humidifier has an output capacity of 19.5 gallons per day
  • This unique design is easy to install and has a snap lock cover for quick maintenance
  • The Model 3200 is constructed of durable fiberglass which resists rust, corrosion and warping
  • Combined with our patented White Water Pads the Model 3200 substantially reduces overall water and power consumption
Size Square Footage Product Part Number Price Buy Now
13 3/4 x 13 3/4 x 6 MAX.SQ.FT.:4,260 Green Humidifer 145GH2500 $274.00
           
   

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  • The improved WaterPad® has long been the industry standard in replacement pads
  • These pads are designed to maximize output and outperform similar pads
  • The New White WaterPad® produces up to 50% more moisture output than the metal pad
  • The combination paper and metal pad is designed to save money, energy and maximize humidity output
Product Part Number Price Buy Now Case Quantity Case Price Buy Now
Water Pads 145GH3200WP $20.05
12 $216.54
Water Pads 145GH2500WP $20.05
12 $216.54
             
     

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The Autoflo® Model 250 is a high capacity humidifier that uses the bypass method, which forces air from the warm air supply into the humidifier. The unit then pulls the air through the return duct due to the pressure that is created in the furnace's ductwork. Both models can be used with any forced air furnace.
Size Square Footage Product Part Number Price Buy Now
13"W x 11"D MAX.SQ.FT.:3,790 Flow Through Humidifier 145250FTH $237.00
           
   

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The SC-15 Scoop presents a revolutionary design that requires only one plenum opening. This model uses a state of the art diverter that forces hot, dry air from the supply into the humidifier, and across the high capacity media.
Size Square Footage Product Part Number Price Buy Now
13"H x 13"W x 6"D MAX.SQ.FT.:4,025 Flow Through Humidifier 145SC15FTH $263.00
           
   

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The Autoflo® Model 97 is a bypass humidifier with a capacity for larger homes.
Size Square Footage Product Part Number Price Buy Now
15"W x 12 1/2"D MAX.SQ.FT.:4,500 Drum Type Humidifier 14597DTH $308.00
           
   

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The Autoflo® model 200P is a bypass model constructed out of stainless steel for durability and longevity. This model utilizes the patented "Convair Cone" which increases the airflow through and around the water media to maximize capacity.
Size Square Footage Product Part Number Price Buy Now
16"W x 11"D MAX.SQ.FT.:3,310 Drum Type Humidifier 145200DTH $286.00
           
   

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The Autoflo® Model 800BP combines high efficiency operation and easy maintenance reliability. The 800BP is made from high temperature, high performance plastic. All models will work with any forced air furnace.
Size Square Footage Product Part Number Price Buy Now
13"W x 7 "D MAX.SQ.FT.:4,025 Drum Type Humidifier 145800DTH $234.00
           
   

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