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Atomic 30925 Compatible Filter For Hunter Air Purifier

Atomic Filters 30925 Compatible Hepa Filter replacement for Hunter Air Purifier is a compatible version of the Hunter 30925 HEPAtech Purifier Filter. This HEPA Filter captures airborne allergens such as dust, mold spores, pet dander, pollen, and smoke. HEPA filters capture approximately 99.97% of airborne pollutants as small as 0.3 microns.

The Atomic 30925 HEPAtech Filter replacement is a compatible version of the Hunter 30925 HEPAtech Air Filter Replacement. Air filter features a 4-stage air purification process. Stage 1: pre-filter removes large airborne dust particles, hair and lint. Stage 2: sub-micron second stage filter captures 99.97% of airborne particles as small as 0.1 microns. Stage 3: activated charcoal filter freshens the air by absorbing and eliminating stale air, unpleasant odors and pet related odors. Fits Hunter HEPAtech purifier models HEPAtech 100 - 30100 HEPAtech 110 - 30110 HEPAtech 125 - 30125 HEPAtech 37125 - 37125 HEPAtech 140 - 30140 HEPAtech 150 - 30150 HEPAtech 165 - 30165 Dimensions: 13 1/2" x 11 1/2" x 1 1/4"

30917 Hunter Air Purifier Compatible Filter by Atomic Filters is the correct replacement filter for the following air cleaner models:

  • Fits Hunter HEPAtech purifier models 30027, 30028, 30700, 30701
  • Captures Smoke, Pollen, Dust, Mold Spores, Pet Dander, and other irritating Allergens
  • Lasts Up To 6 months Under Continous Use
  • Easy use and installation
  • 30925 dimensions: 13 1/2" x 11 1/2" x 1 1/4"
  • Recommended for the peak performance, replace your Atomic Filters Air Filter every 6 months. This package contains 1 HEPA filter.

Customer Reviews

Based on 1 review

looks like a quality unit. good fit. will not really know until fall when house gets ready for winter

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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.

Find Your Filter Sizes Easy in 1" Deep Filters , 2" Deep Filters, 4" Deep Filters