Finding the Right Air Filter

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Air Filters and what’s right for you

Air filters not only allow you to have a healthy home, they also protect your heating and air condition system from breaking. When the air from your home is sucked into the system to heat or cool the air, your filter is what keeps the bacteria from clogging the coils that create your air temperature. Regularly changing your filter allows for less particles to hit your system and instead get trapped in your filter.

The air we breathe is an important part of our health. Though we may not be able to smell bacteria, our bodies can feel it and it can cause long term affects.


Where is my system located?

Wherever your heating and air conditioning resides is where you want to pull your air filter from. This is typically located in a mechanical room. Places like a closet, basement or even an attic are all places you could find your system. Filters can also be found in the ceiling or in the wall. This location is more common in 1” filters. Often, turning on the fan of your system and listening, can help you determine the location of your system.

Most in-home air filters are 1”, however if yours is not, then you have a “media” filter which is a thicker version. “Media” filters, or box filters, are around 4 to 6” in thickness and are considered whole house filters found in a cabinet-like setting.


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1″ Air Filter Example

What size filter should I buy?

The correct size is important for your air filter. Your filter should have a label on the frame with a given size. The make, model number or serial number are not important numbers for your filter. You can also determine the size by using a tape measure to get the exact dimensions.

Width x Height x Depth – Typically the longer measurement is taken for the height. An example would be 16 x 24 x 1. The width is 16 inches, height is 24 inches and the depth is 1 inch.


What is Merv and MPR?

The Merv of a filter is stated to help you determine how much bacteria and particles you want to keep out of your system. A Merv rating of 6 tells you that about half of your particles will be trapped. An 8 Merv rating traps 70 to 85 percent of particles in the air. An 11 rating or higher says that about 95 percent of your air will be cleaner exiting than it was entering the filter. MPR is also an indication of the level of filtration your filter provides. The higher the number, the more particles being filtered.

A higher merv or MPR rating is not always a better filter for your system. If a filter has too high of a rating it can mean less air flow and less recirculation. This could actually harm the air quality of your home. Verifying that you have the correct filter size and rating is very important before purchasing a filter.

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How do I install my air filter?

When installing your new filter, make sure to turn the fan off as dust can get lodged in your HVAC system. If your filter does not look dirty after 3 months, you should check that you have the correct filter and that it was installed correctly. Filters should not be loose and often arrows will be located on the frame of the filter to give the indication of the direction to install the filter. The downstream side of the filter should face the blower of your HVAC system. Most filters can only be inserted one way.


Need more help? Visit our Air Filters Buying Guide.


How Clean is the Air in Your Home?

Close up of a welcome mat in front of an inviting houseHave you ever wondered what is really in the air around us? Often our perception is that the air inside our homes and offices are clean, and we give little thought to what we breathe in every day. Most of the time the outside air is actually safer, even if it contains smog or other particles.

An average person spends about 90 percent of their time indoors, which could be harmful if the air isn’t clean. Using your air filter for too long allows chemicals and unwanted particles to get inside your home creating not only an increase in heating and air conditioning bills, but could also cause wheezing, coughing and sickness.

How did this happen?

There are many ways your air can be polluted within your home. Anything from the outside air getting trapped within your home to bringing a mattress home for the first time. If you have new furniture, you may want to check what you’re bringing with it. Carpet cleaners or in home cleaning supplies could also cause chemicals to pollute the air in the home. Things such as painting the walls or new comforters can cause the air to pollute.

How often should I change my air filter?

  • Do you feel sick often? You can’t always tell air quality based on cleanliness or how the air feels to you. However, if the air in your home doesn’t seem as clean and dust is appearing quickly or you’re getting sick, look into getting a new air filter.
  • Do you have pets?  We recommend changing your filter more often as your pet can carry a lot of particles and dander into the home.
  • Do you have a big family? If so, you’ll want to change your filter more often and while your family grows, check your filter regularly to determine how long you can use a filter for. The time between filter changes should lessen as your family grows.
  • Do you live on a gravel road or currently have construction going on outside? Something as simple as changing your air filter could allow your home to seem more pleasant.
  • Have you painted recently or moved new furniture in? Take a look at your filter and make sure that the added pollutants didn’t clog your filter
  • When was the last time you bought an air filter? Every air filter is different so check the filter itself and depending on the type of filter, you may have to buy more frequently.

How to solve it.

The only way to limit the chemicals, dust, formaldehyde, fragrances or other air pollutants, is to change your air filter regularly. By doing so, you allow the air to get trapped in a filter rather than breathing in harmful chemicals. If you’re getting watery eyes or are coughing when inside your home, it’s likely time to change your filter.

Any time you bring something new into your home, whether a new mattress, pet or family member, you’ll want to check your air filter to make sure you’re keeping the air clean and you haven’t added extra pollutants.

Finding an inexpensive way to keep your home clean isn’t always easy, but at we offer the lowest prices for products that keep your home and family safe. Learn more about Discount Filter Store’s advanced air filters.

We invite you to like us on Facebook, follow us on Twitter or +1 us on Google+ to be the first to learn about exclusive deals and new products.

Are you a veteran, currently serving in the Armed Forces, or are you buying a gift for a veteran or soldier?  Use the discount code ‘VETERAN’ at checkout to take 5% off your entire order!

Celebrating 10,000 Live Online Chats With Our Air & Water Filter Customers! Customer Service Rep Helps 10,000 CustomersThis week marked a huge milestone for one of our Customer Service team members, in addition to our air and water filter customers, that I just have to share with you.

At about the mid-week point, Heidi, pictured to the left – hit the mark for 10,000 live online chats with our customers!

Obviously, this is a huge personal accomplishment for a very dedicated team member, but it’s truly something much more.  It’s a sign of our commitment to providing you with easy access to air and water quality experts, when you need them.  It’s proof positive that when you enter your question into that live chat box at our online store, your question isn’t being routed to goodness-knows-where, or simply getting lost in no man’s land.  And finally, it’s a symbol that we’re never too busy to help walk customers like you through questions either large or small.

When congratulating Heidi yesterday, she shared that not only did she hit her 10,000 mark, but she also successfully completed 60 live online chats with our customers in under two hours!

10,000 Online Customer Chats At DiscountFilterStore.comEverything about today’s announcement makes me well up with pride, both in our team and in the loyalty of thousands of customers who trust us to be their air and water filters provider.  And, of course, to answer their questions quickly whenever an issue arises.

I thank you on behalf of everyone on our team for allowing us the opportunity to serve you, and I hope that if you do find yourself on the phone or in a live chat with Heidi, you’ll join me in extending a heartfelt congratulations!

To stay up to date on the latest water quality information, or our latest filters sales on discounts, like us on Facebook, follow us on Twitter or +1 us on Google+.

Are you a veteran, currently serving in the Armed Forces, or buying a gift for a veteran or soldier?  Use the discount code ‘VETERAN’ at checkout to take 5% off your entire order!

American-Made Tier1 Air Filters Are A Breath of Fresh Air!

Tier1 Air Filters - American Made[Find the air filter you need, and take 20% off, through Monday, July 7th, by using the discount code Air21 at checkout.

For help finding the air filter you need, visit our Air Filter Finder, read our Air Filters Buying Guide, or call our customer service team at 1-800-277-3458.]

Buying American can be easier said than done.  Despite our best efforts to keep money close, sometimes, we just can’t find a domestically made version of that product we most desperately need. Continue reading

Free New eBook – Air Filter Buying Guide: Find The Right Filter For Any Season or Reason

Unless you know exactly what you are looking for, buying a new air conditioner or furnace air filter can leave you feeling as though you are swimming upstream in alphabet soup.  As this Monday marked the beginning of Air Quality Awareness Week, a time set aside to learn how air quality affects our health, many of you are likely finding yourselves swimming in this soup as we speak.

Acronyms like MERV, MPR, HEPA and FPR surround you, while dozens of brands vie for your dollars and devotion.   And this all happens after you find your existing air filter, which may or may not include the sizing details and model number you need to buy a comparable replacement.

With our free new eBook, buying replacement air filters for your furnace or air conditioner will rarely – if ever – cause the types of headaches you may have forced yourself to become accustomed to.

Presented by, our Air Filter Buying Guide: Find The Right Filter For Your Furnace, AC or Purifier For Any Season or Reason, includes:

  • Insight on the quality of the air we breathe, courtesy of the State of the Air Report, by the American Lung Association
  • Answers to frequently asked questions, including ‘What is a MERV rating?’ and ‘What is the difference between air filter brands?’
  • A ‘5-Point Air Filter Buying Guide Checklist,’ designed as a quick reference you can use to help make more informed and healthier air filter purchases for years to come

Eliminate the confusion, questions and headaches that can surround air filter purchases by reading our free new eBook above.

If you have any additional questions, please feel free to leave a comment below or by calling our customer service team at 1-800-277-3458.

We invite you to like us on Facebook, follow us on Twitter or +1 us on Google+ to be the first to learn about exclusive new deals and products.

Are you a veteran, currently serving in the Armed Forces, or are you buying a gift for a veteran or soldier?  Use the discount code ‘VETERAN’ at checkout to take 5% off your entire order!