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Atomic Customer Reviews

Based on 713 reviews
Good service

Ordered product and was delivered on time. Will buy again!

Terrific service.

Ordered my special filters and they were here on exactly the day I was told to expect. Also in the future they will automatically deliver them biannually to coincide with my furnace and AC cleaning This is such a convenient service. Very happy I found this company. Would recommend whole heartedly without reservation.

Fast Service, Best Price

The price on Atomic Filters was lower than any where else. My normal HVAC company couldn't get them at this price. They were fast to fullfill and ship my order. Excellent service and great value. I'll be a repeat customer!

Smooth Transaction

I needed a replacement filter and stumbled upon the one I needed on the Atomic Filters website when searching online. Retail stores like Home Depot don't sell this. I previously ordered one via Amazon. It arrived unassembled and the price was higher than what I paid for this one. My new filter arrived on time, assembled, and undamaged. And the price was reasonable. Nothing more I could ask for. I will continue to buy these filters through Atomic.

Great Service

I signed up with a new AC contractor and they did not have a filter to fit my system and put in a substitute that was a BIG MESS. All I had to do was google the product I needed and place the order. The price was fair, the filters were packed very well, and they arrived fast. This was great customer service. I will continue to buy from here and replace the filters on my own.

Wrong size

Atomic Filters shipped the incorrect size. I am not sure if I somehow ordered the incorrect size or if the order got mixed up but Atomic Filters reshipped the correct size very quickly and with absolutely no hassle on my end. I really appreciate their great customer service!

Great value

Purchased Carrier A/C Filter gapcccar20/ 20 (duel pack) ! Well packed arrived in 3 days ,how can you go wrong !! PLEASED!!! T.Y. Best price on internet -no tax ,free shipping!

RGF REME HVAC HALO 24V Air Purification System Light

I purchased four RGF REME HVAC HALO 24V Air Purification System Lights and truly feel is was money well spent for an excellent product. I would recommend this product to those who want clean air in their home.

Good & Prompt Service

The filters were the ones I needed.

Received my filter on time and in good condition.fits perfect thank you.

Product is great and fits perfect

A penny saved is.........

Very pleased with this purchase, this website, and the fast delivery.

Perfect fit

Expensive but perfect



Refrigerator filters

Great procuct, great price, a small blip in shipping, but great customer service fixed it quickly. Thumbs up for Atomic Filters.

Shuttle Filter

Found this company on line and the price was very competitive. Quick shipment and fit perfectly. will order replacements in the future.

Very Satisfied

Order received promptly price was good

Genuine Product

Ordering easy & shipping was fast. Thanks

Great product so far

The filter was the correct fit and went in easily. So far it allows for a good flow of water and appears the filter the water well. The purchase was easy and the shipping was as promised.

Worth the price

I have been using the Whirlpool air purifiers for many years. Yes same machines have been in operation for about 9 years,running constantly. In my opinion only the original Whirlpool filters are the most effective replacements. They are quieter and seem to be more efficient than knock-offs. I have only tried two "compatible" filters during those years, and found both to be louder due to the air flow passing through the cells, and the looser fit. I stay with the original Whirlpool filters. More expensive, but it's only a yearly purchase. Definitely recommend the true Whirlpool filter for the Whirlpool air purifier.

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