1 Inch Furnace Filters

Breathe Easy with United Filter's Unbeatable Selection of 1-Inch Furnace Filters

Looking for the best 1-inch furnace filters in North America without breaking the bank? United Filter stocks a massive selection of 1 inch furnace filters in various sizes to perfectly fit your HVAC system. 

Our furnace filters are available at the lowest prices in Canada and USA. We guarantee you won’t find lower prices on 1 inch furnace filters on Amazon. Their prices can fluctuate. 

We prioritize providing superior quality household air filters at the lowest prices guaranteed. Skip shopping around for furnace filters and breathe confidently with United Filter.

A Perfect Fit, a Perfect Furnace Filter: Finding the Perfect Size is Paramount!

Most 1-inch furnace filters are typically in standard dimensions like 16x20x1 or 20x25x1. However, based on our experience selling 1-inch furnace filters, we recommend that you confirm the size of your existing furnace filter before ordering. 

For your furnace to operate at maximum efficiency, at the lowest cost, and maintain optimal indoor air quality, it’s super important you double-check the correct filter size before ordering. 

How do you find your furnace filter size? You’ll need the length, width, and depth in inches, and It’s easy to find! Just locate the existing filter in your furnace and measure its length, width, and depth. 

When your new 1 inch furnace filter arrives, make sure it fits snugly into the filter rack. If a 1 inch furnace filter fits too tight or too loose, it will not be as effective. Follow these simple steps to get the right furnace filter for your system and improve your home's indoor air quality.

Why Use 1 Inch Furnace Filters?

Imagine that 1 inch furnace filters are like ninjas guarding the indoor air quality in your home. These 1 inch furnace filter ninjas will trap dust, pollen, pet dander, and other pollutants that travel through your vents and into your lungs. These 1 inch furnace filter ninjas can significantly improve indoor air quality, especially for those suffering from allergies, asthma, or other sensitivities in their lungs.

Benefits for Everyone:

United Filter’s mission is to provide clean, healthy air for everyone, everywhere. Our 1-inch furnace filters are designed to improve indoor air quality and to meet the diverse needs of both residential and commercial spaces.

For Homeowners:

Improved Indoor Air Quality: Our 1 inch furnace filters effectively trap dust, pollen, pet dander, and other allergens. This results in improved indoor air quality and a healthier living environment for you and your family.

Enhanced Comfort: Cleaner air from the best furnace filters will relieve allergy symptoms and reduce respiratory issues. The overall comfort of your home is improved by better air quality.

Longer HVAC System Lifespan: Our 1 inch air filters can help extend the lifespan of your system by helping your HVAC system not work so hard. This helps in reducing maintenance costs.

For Businesses:

Increased Productivity: A clean air environment can boost employee morale, reduce sick days, and enhance productivity.

Positive First Impressions: An efficient HVAC system with clean air filters always creates a positive and lasting impression on clients and customers.

Cost-Effective Solution: Our 1 inch furnace filters improve air quality and maintain a healthy workplace while keeping you within your budget!

No matter your specific needs, United Filter has the perfect 1-inch furnace filter to keep your air clean and fresh.

MERV Matters!

What is the MERV rating? MERV stands for Minimum Efficiency Reporting Value. When choosing your 1 inch furnace filter, be sure to note this rating. The MERV rating refers to how well the furnace filter captures particles in the air. If you’re looking for basic dust and allergen control, then furnace filters with a MERV 8 or 9 rating will be fine. 

However, if you or someone in your home has allergies or asthma, you should choose a MERV 11 furnace filter. Furnace filters with this rating provide much better filtration for those that need a high level of indoor air quality.

United Filter's Advantage:

At United Filter, we believe that everyone deserves clean air. That’s why we offer high-quality 1-inch furnace filters at the lowest prices. If you're looking for a little dust control or a full-on allergy filter, we've got the best furnace filters you're looking for. 

Explore our full range now and experience the United Filter difference! But buying a United Filter is more than just a low-cost option. It means shopping smart, breathing easy, while saving money!

Breathe Easy with United Filter's Unbeatable Selection of 1-Inch Furnace Filters

Looking for the best 1-inch furnace filters in North America without breaking the bank? United Filter stocks a massive selection of 1 inch furnace filters in various sizes to perfectly fit your HVAC system. 

Our furnace filters are available at the lowest prices in Canada and USA. We guarantee you won’t find lower prices on 1 inch furnace filters on Amazon. Their prices can fluctuate. 

We prioritize providing superior quality household air filters at the lowest prices guaranteed. Skip shopping around for furnace filters and breathe confidently with United Filter.

A Perfect Fit, a Perfect Furnace Filter: Finding the Perfect Size is Paramount!

Most 1-inch furnace filters are typically in standard dimensions like 16x20x1 or 20x25x1. However, based on our experience selling 1-inch furnace filters, we recommend that you confirm the size of your existing furnace filter before ordering. 

For your furnace to operate at maximum efficiency, at the lowest cost, and maintain optimal indoor air quality, it’s super important you double-check the correct filter size before ordering. 

How do you find your furnace filter size? You’ll need the length, width, and depth in inches, and It’s easy to find! Just locate the existing filter in your furnace and measure its length, width, and depth. 

When your new 1 inch furnace filter arrives, make sure it fits snugly into the filter rack. If a 1 inch furnace filter fits too tight or too loose, it will not be as effective. Follow these simple steps to get the right furnace filter for your system and improve your home's indoor air quality.

Why Use 1 Inch Furnace Filters?

Imagine that 1 inch furnace filters are like ninjas guarding the indoor air quality in your home. These 1 inch furnace filter ninjas will trap dust, pollen, pet dander, and other pollutants that travel through your vents and into your lungs. These 1 inch furnace filter ninjas can significantly improve indoor air quality, especially for those suffering from allergies, asthma, or other sensitivities in their lungs.

Benefits for Everyone:

United Filter’s mission is to provide clean, healthy air for everyone, everywhere. Our 1-inch furnace filters are designed to improve indoor air quality and to meet the diverse needs of both residential and commercial spaces.

For Homeowners:

Improved Indoor Air Quality: Our 1 inch furnace filters effectively trap dust, pollen, pet dander, and other allergens. This results in improved indoor air quality and a healthier living environment for you and your family.

Enhanced Comfort: Cleaner air from the best furnace filters will relieve allergy symptoms and reduce respiratory issues. The overall comfort of your home is improved by better air quality.

Longer HVAC System Lifespan: Our 1 inch air filters can help extend the lifespan of your system by helping your HVAC system not work so hard. This helps in reducing maintenance costs.

For Businesses:

Increased Productivity: A clean air environment can boost employee morale, reduce sick days, and enhance productivity.

Positive First Impressions: An efficient HVAC system with clean air filters always creates a positive and lasting impression on clients and customers.

Cost-Effective Solution: Our 1 inch furnace filters improve air quality and maintain a healthy workplace while keeping you within your budget!

No matter your specific needs, United Filter has the perfect 1-inch furnace filter to keep your air clean and fresh.

MERV Matters!

What is the MERV rating? MERV stands for Minimum Efficiency Reporting Value. When choosing your 1 inch furnace filter, be sure to note this rating. The MERV rating refers to how well the furnace filter captures particles in the air. If you’re looking for basic dust and allergen control, then furnace filters with a MERV 8 or 9 rating will be fine. 

However, if you or someone in your home has allergies or asthma, you should choose a MERV 11 furnace filter. Furnace filters with this rating provide much better filtration for those that need a high level of indoor air quality.

United Filter's Advantage:

At United Filter, we believe that everyone deserves clean air. That’s why we offer high-quality 1-inch furnace filters at the lowest prices. If you're looking for a little dust control or a full-on allergy filter, we've got the best furnace filters you're looking for. 

Explore our full range now and experience the United Filter difference! But buying a United Filter is more than just a low-cost option. It means shopping smart, breathing easy, while saving money!

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20x25x1 MERV 8 - Case of 12
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1 Inch Furnace Filters

20x25x1 MERV 8 - Case of 12 20x25x1 MERV 8 - Case of 12

Nominal Size: 20 x 25 x 1
Actual Size: 19-1/2 x 24-1/2 x 3/4
Part #: UF8-12025-12
MERV: 8
Case: 12
Case: $89.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$66.00
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20x25x1 MERV 11 Furnace Filter
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1 Inch Furnace Filters

20x25x1 MERV 11 Furnace Filter 20x25x1 MERV 11 Furnace Filter

Nominal Size: 20x25x1
Actual Size: 19-1/2 x 24-1/2 x 3/4
Part #: UF11-12025-12
MERV: 11
Case: 12
Price: $104.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$77.00
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20x25x1 MERV 13
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1 Inch Furnace Filters

20x25x1 MERV 13 20x25x1 MERV 13

Nominal Size: 20 x 25 x 1
Actual Size: 19-1/2 x 24-1/2 x 3/4
Part #: UF13-12025-12
MERV: 13
Case: 12
Price $134.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$99.00
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20x30x1 MERV 8 - 12 Pack
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1 Inch Furnace Filters

20x30x1 MERV 8 - 12 Pack 20x30x1 MERV 8 - 12 Pack

Nominal Size: 20 x 30 x 1
Actual Size: 19-1/2 x 29-1/2 x 3/4
Part #: UF8-12030-12
MERV: 8
Case: 12
Price: $139.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$97.00
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20x30x1 MERV 11 - 12 Pack
View Detail
1 Inch Furnace Filters

20x30x1 MERV 11 - 12 Pack 20x30x1 MERV 11 - 12 Pack

Nominal Size: 20 x 30 x 1
Actual Size: 19-1/2 x 29-1/2 x 3/4
Part #: UF11-12030-12
MERV: 11
Case: 12
Price: $129.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$96.00
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20x30x1 MERV 13 - 12 Pack
View Detail
1 Inch Furnace Filters

20x30x1 MERV 13 - 12 Pack 20x30x1 MERV 13 - 12 Pack

Nominal Size: 20 x 30 x 1
Actual Size: 19-1/2 x 29-1/2 x 3/4
Part #: UF13-12030-12
MERV: 13
Case: 12
Price: $179.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$132.00
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22x22x1 MERV 8 - 12 Pack
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1 Inch Furnace Filters

22x22x1 MERV 8 - 12 Pack 22x22x1 MERV 8 - 12 Pack

Nominal Size: 22 x 22 x 1
Actual Size: 21-1/2 x 21-1/2 x 3/4
Part #: UF8-12222-12
MERV: 8
Case: 12
Price: $109.99

Manufactured: North America

*Effective for dust, pollen, pet dander, bacteria and mould.
$81.00
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22x22x1 MERV 11 - 12 Pack
View Detail
1 Inch Furnace Filters

22x22x1 MERV 11 - 12 Pack 22x22x1 MERV 11 - 12 Pack

Nominal Size: 22 x 22 x 1
Actual Size: 21-1/2 x 21-1/2 x 3/4
Part #: UF11-12222-12
MERV: 11
Case: 12
Price: $119.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$88.00
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22x22x1 MERV 13 - 12 Pack
View Detail
1 Inch Furnace Filters

22x22x1 MERV 13 - 12 Pack 22x22x1 MERV 13 - 12 Pack

Nominal Size: 22 x 22 x 1
Actual Size: 21-1/2 x 21-1/2 x 3/4
Part #: UF13-12222-12
MERV: 13
Case: 12
Price: $179.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$132.00
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24x24x1 MERV 8 - 12 Pack
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1 Inch Furnace Filters

24x24x1 MERV 8 - 12 Pack 24x24x1 MERV 8 - 12 Pack

Nominal Size: 24 x 24 x 1
Actual Size: 23-1/2 x 23-1/2 x 3/4
Part #: UF8-12424-12
MERV: 8
Case: 12
Price: $99.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$74.00
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24x24x1 Furnace Filter MERV 11 - 12 Pack
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1 Inch Furnace Filters

24x24x1 Furnace Filter MERV 11 - 12 Pack 24x24x1 Furnace Filter MERV 11 - 12 Pack

Nominal Size: 24x24x1
Actual Size: 23-1/2 x 23-1/2 x 3/4
Part #: UF11-12424-12
MERV: 11
Case: 12
Price: $119.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
$88.00
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24x24x1 MERV 13 - 12 Pack
View Detail
1 Inch Furnace Filters

24x24x1 MERV 13 - 12 Pack 24x24x1 MERV 13 - 12 Pack

Nominal Size: 24 x 24 x 1
Actual Size: 23-1/2 x 23-1/2 x 3/4
Part #: UF13-12424-12
MERV: 13
Case: 12
Price: $159.99

Manufactured: North America

*Effective for dust, pollen, pet dander, bacteria and mould.
$118.00
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