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5 Best Furnace Filters of 2025

Last Updated - 2025/10/01

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Healthy Climate

Lennox Healthy Climate 16x25x5 X6670 MERV 11 Filter-Actual Size 15 3/4" x 24 3/4" x 4 3/8". Pack of 3.

Healthy Climate

CA$130.49

More Details
Main highlights
- Replaces Honeywell FC35A1001, FC100A1029, FC200E1029
- Replaces EXPXXFIL0016, EXPXXUNV0016, EXPXXLMC0016, FILCCCAR0016, FILBBCAR0016
- Nominal Size: 16 inch x 25 inch x 5 inch
- Genuine Lennox Replacement Filter, MERV 11, Replaces X6670 for Lennox Model HCF16-10, HCC16-28
- Actual Size:15 3/4 inch x 24 3/4 inch x 4 3/8 inch
CA$130.49
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ELECTRO-AIR, FIVE SEASONS

Five Seasons, Goodman M8-1056 Furnace Filter 20x25x5 (Actual Size: 20.25" x 25.38" x 5.25") MERV 11 Premium Air Cleaner Filter for HVAC Purification Systems (3 Pack)

ELECTRO-AIR, FIVE SEASONS

CA$102.00

More Details
Main highlights
- Exact OEM product for M8-1056 filter.
- Actual Size: 20-1/4" x 25-3/8" x 5-1/4"
CA$102.00
3
Best Value
17% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Filtrete
17% Off

Filtrete 16x25x1 Furnace Filter, MPR 300, MERV 5, Clean Living Basic Dust 3-Month Pleated 1-Inch Air Filters, 6 Filters

Filtrete

CA$51.17

CA$61.85
(17% Off)

More Details
Main highlights
- VERSATILE USES: Works for changing the home air filters in your furnace, air conditioner/heating system or HVAC system
- MAKE YOUR HOME YOUR SANCTUARY: 6-pack of 3-month pleated Filtrete 16x25x1 MPR 300 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment
- EXCLUSIVE TECHNOLOGY: Air filter designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles to make air cleaner as it flows through
- DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 15.69 x 24.69 x 0.81
- COUNTLESS PARTICLES: With a 300 MPR and MERV 5 rating, your Filtrete Filter will help capture many particles from the air passing through it
- CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days
CA$51.17
CA$61.85 (17% Off)
4
13% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Amazon Basics
13% Off

Amazon Basics Merv 11 Allergen Defense AC Furnace Air Filter - 16'' x 25'' x 1'', 6-Pack

Amazon Basics

CA$59.90

CA$68.91
(13% Off)

More Details
Main highlights
- Merv 11 rating for residential use; comparable to MPR 1000-1200 and FPR 7
- For optimal results change filter every 60 to 90 days
- Captures allergens between 3-10 microns including lint, dust, and pollen
- Beverage board frame, wire mesh support, and electrostatically charged synthetic filter material
- AC/Furnace filter for capturing household irritants, improving air quality, and promoting furnace efficiency; 16 x 25 x 1 inch filters, 6-pack
CA$59.90
CA$68.91 (13% Off)
5
11% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

AirPurete
11% Off

M1-1056, AMP M1-1056 Replacement Filter | AirPurete AP- M116255 | Actual Size 15 3/8" x 25 1/2" x 5 1/4" (16x25x5) | Pack of 3 | Compatible with Reliance Smart Air | Manufactured in Canada

AirPurete

CA$84.99

CA$96.00
(11% Off)

More Details
Main highlights
- Nominal Size: 16x25x5
- MERV 11 high capacity and efficiency filter (comparable with MPR 1000 - 1200 & FPR 7) protects homes from pollen, dust, and lint by trapping 95% of airborne particles without impacting air flow.
- Compatible with M1-1056, AMP M1-1056 and Reliance Smart Air furnace.
- AirPurete filters are manufactured and assembled in Canada.
- Actual Size: 15-3/8" x 25-1/2" x 5-1/4" | 15.38 x 25.50 x 5.25 Inches
CA$84.99
CA$96.00 (11% Off)

5 Best Furnace Filters of 2025

Lennox Healthy Climate 16x25x5 X6670 MERV 11 Filter-Actual Size 15 3/4" x 24 3/4" x 4 3/8". Pack of 3.

Five Seasons, Goodman M8-1056 Furnace Filter 20x25x5 (Actual Size: 20.25" x 25.38" x 5.25") MERV 11 Premium Air Cleaner Filter for HVAC Purification Systems (3 Pack)

Filtrete 16x25x1 Furnace Filter, MPR 300, MERV 5, Clean Living Basic Dust 3-Month Pleated 1-Inch Air Filters, 6 Filters

Amazon Basics Merv 11 Allergen Defense AC Furnace Air Filter - 16'' x 25'' x 1'', 6-Pack

M1-1056, AMP M1-1056 Replacement Filter | AirPurete AP- M116255 | Actual Size 15 3/8" x 25 1/2" x 5 1/4" (16x25x5) | Pack of 3 | Compatible with Reliance Smart Air | Manufactured in Canada

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