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Find Your Filter Easily with Quick Search

Enter The Filter Part Number or Size from Your Current Filter in the Search, for example, enter X8795 or 20x20x1.

 

Bringing you clean air and water quickly at exceptional value. If you do not see your filter on our site please contact us. We stock many hard to find filters and custom sizes. We also make custom air filters and can give you a quote if we do not stock your item. We usually have approximately 48 hour(business days) turn around time on custom filters.

Best Deals on Lennox and Carrier Furnace Filters

Atomic Filters offers for sale an Extensive selection of OEM Original Lennox Furnace Filters at discount prices with fast free shipping including the PureAir Air Purification System Maintenance Kits, the Healthy Climate Carbon Clean 16 Media Air Cleaner, and Healthy Climate 11 Media Air Cleaner. 

The Atomic selection of Bryant Carrier Infinity filters includes the popular EZFlex expandable filter media and the  GAPA PERFECT AIR PURIFIER MERV 15 Filters.

Honeywell Filters and HEPA Air Purifiers

The Honeywell Filter Collection includes the Popular Honeywell Return Grill Media Filters and Air Purifier replacement filters for model 50250. The replacement for the Honeywell 24000 Hepa air filter is an exceptional value by Atomic and we also offer the carbon pre-filters. Other replacement Honeywell air purifier filters include the 21500, 22500, 23500, and the 29500 Models. 

Geothermal Air Filters

Atomic make an extensive selection of quality geothermal air filters for geothermal heating and cooling systems that work by geoexchange.

Recent Customer Reviews

Way better in quality and value!

So nice to find a company that still believes in service at a fair price!

Clean Air

THEY WORK GREAT .I HAVE COPD AND THESES FILTERS ARE VERY GOOD ,AND THE PRICE IS REASONABLE

News

Insider Secrets to Buying Furnace Filters and Saving Big Bucks

by Kevin King December 05, 2018

Protect Your Family's Health and Your Wallet

Getting the right filter for your furnace is not as easy as it used to be as new and old homes alike are switching to more sophisticated systems to protect the air quality in our homes. Originally HVAC filters were designed to protect the expensive equipment from dust and debris that could damage the systems and reduce performance. As indoor air quality in our homes has become a greater concern Companies like Lennox and Carrier have designed highly efficient systems to purify the air in your home. The more sophisticated Lennox PureAir systems, for instance, require replacement of both high-efficiency furnace filters and ultraviolet bulbs and catalytic filters. The fact is these new HVAC systems are providing ultra high-quality air in our homes to help protect the health of families, but often replacement parts and filters can seem to be costly if you do not know insider secrets.

Buy Your Filters Like A Pro 

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TopTech Furnace Filters

by Kevin King October 24, 2018

Why TopTech whole house air cleaners

  • Toptech Air cleaner attaches to any forced air heating or cooling system
  • Incredible standard MERV 11* filtration rate
  • Maintain high-efficiency levels of your HVAC Equipment
  • Help protect your family and home from airborne particulates, allergens, dust, and dander
  • Cleans the air in your entire home every time your heating or cooling system is on
  • Easy filter cartridge replacement
Why TechPure Air Cleaners from Toptech
  • Specifically Sized for the correct air handlers and furnaces
  • Reflectix® R-4.2 insulated cabinet and door
  • Low pressure drop (0.181" @ 492 FPM)
  • Utilizes standard size media
  • Includes duct/equipment mounting gasket and door cleaner
  • Easy filter size identifier printed on the door label
  • Solid 22 gauge galvanized steel cabinet

The TopTech brand

Toptech represents the finest quality HVAC parts, supplies, and accessories which are consistently made at the highest levels above the competition with quality control measures and feature sets. 

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Nominal Vs. Actual Sizes: Finding the Right Air Filter Size

Buying the Correct Size Air Filter- The Most Important Thing to Know 

When you are buying your air filter online most important thing to know is Air Filters have two sizes that you need to understand the Nominal size and the Actual Size. Not understanding these numbers often leads to consumers purchasing a filter that does not fit their Furnace or HVAC system.

Nominal vs Actual air filter size by Atomic

 

Understanding Nominal Filters Size Could Save You Time and Money

Not understanding the Nominal Filter Size is the primary culprit for incorrectly purchased filters.The Nominal Size is the usually the dimensions used to Label the filter. For instance 16x20x1. These dimensions are a rounded value on the filters actual measurements. The actual measurements on this filter may be 15.5x19.5x.75, but that could vary by brand and manufacturer. So in order to make sure you have the correct size filter, especially if you are replacing with a different brand it is important to confirm the actual size on the filter. When purchasing filters on the internet the Nominal size is usually found in the product title.

Actual Filter Size- The Key to Making the Right Replacement Filter Purchase

The actual size as you might have guessed are the actual dimensions of the filter by length, width and thickness. This size is often on the filter right below the Nominal size and is usually labeled as the actual size. When you are buying a filter online the actual size is sometime in the product bullet point or the product description. If your filter does not have actual dimensions on the outside of the filter, you can measure you filter to get the correct dimensions. Some brands have a foam gasket on the outside of the filter, in this case, you will want to make sure you have a compatible actual size and that it also has the foam to ensure a snug fit. 

Lennox Air Filter X0851 with Foam strips

Examples of Nominal and Actual Sizes

 Size  Example 1  Example 2
Nominal Size 20x20x1 16x20x1
Actual Size 19.5x19.5x.75 15.75x19.75x.75

 

 Furnace filters should fit securely but should not have to be forced into position. If you have to force the filter into its slot, then it is probably too big. Forcing an improper filter size in a filter can cause it to buckle, damaging the filter or reducing its ability to function properly. Filters are a smaller than their slot to allow for easy replacement. Some HVAC units may need a filter with dimensions that are unique or uncommon. In these cases, a custom filter needs to be ordered.

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