Top 7 Air Filter Myths [Don’t Make These Mistakes]


Chances are you’ve heard some of these air filter myths floating around.  Here we filter out truth from myth. You don’t want to fall into one of these costly or harmful traps.

There are many common myths surrounding your home air filter.  Some of the ones you’ve probably heard are “you don’t really have to change your filter that often”, “all filters are the same”, “you can run your AC system without a filter” etc.  However, choosing the right filter and changing it regularly can prevent costly repairs, provide healthy clean air for your and your family and save you money on your energy bill.


Fiberglass Filters Are Just as Good as Other Filters

Fiberglass filters are typically what you think about when someone says “furnace filter”.  These filters were originally designed to protect the moving parts inside of your HVAC unit.  However, they do little to actually filter any particles smaller than household dust and lint.  Disposable fiberglass filters are relatively cheap, usually just a few dollars at your local hardware store.  However, you get what you pay for. They need to be replaced often and can lead to costly repairs to your HVAC unit if they’re not changed regularly.  Not to mention, they let smaller particles like mold, mildew, bacteria, allergens and microorganisms pass right through and continue to circulate inside your house.  AIR FILTER MYTH #1…BUSTED

You Don’t Really Have to Change Your Air Filter Every 2-3 Months

This is one of the most common and costly air filters myths around.  It is generally recommended that you change your air filter about every 60 days.  There are several factors to consider though when determining how often to change your homes air filter.  Such as, do you suffer from allergies or asthma? Do you have pets in the house? How often do you use your heating and cooling system?  And what type of air filter do you have? Depending on how you answer these questions you may need to change your air filter even more frequently.  

Not changing your air filter regularly can result in costly repairs and damage your health.  When air filters get dirty and clogged they restrict air flow to your HVAC system. This makes your system work harder and run longer to cool or heat your home.  Leading to higher utility bills and costly repairs. All air filters have a maximum holding capacity. This is the amount of particles they can hold before they are full.  Once an air filter gets close to its holding capacity particles like dust, debris, bacteria, allergens, etc. start to pass through the filter and renter your homes air supply.  This can lead to respiratory issues such as asthma, allergies, coughing and sneezing especially in children and elderly. AIR FILTER MYTH #2…CRUSHED

Non MERV Rated Filters Are Just as Good as MERV Rated Filters

MERV stands for Minimum Efficiency Reporting Value.  This is a standard rating system that measures the ability of a filter to remove particles from the air.  MERV ratings can range all the way from 1-20. With 1 being least effective and 20 being most effective. It’s important to understand that not all air filters are MERV rated.  Some companies avoid having their air filters MERV rated so that they can make whatever claims they want without having to back it up. When you purchase a non MERV rated filter you are really taking a gamble as there’s no way to know how effective the filter actually is.  Some companies have even created their own rating system to try and get around the MERV rating. All our filters at Forget My Filer are MERV rated and certified to perform to the highest standards. Don’t take the risk when it comes to your families health and your HVAC unit.  AIR FILTER MYTH #3…SQUASHED

Home Conditions Don’t Matter When Choosing The Right Filter

Environmental factors in and outside of your home play a huge factor when choosing the right air filter.  As we know by now, not all air filters are created equally. It’s important to assess your specific needs to determine the right filter for you and your home.  For example, does anyone in your house suffer from asthma, allergies or other respiratory issues? Or do you have small children or seniors in your home? If so, you should consider a MERV 11 filter for your home.  These filters provide great protection against household dust and pollen in addition to mold, mold spores, bacteria, smoke and smog.  Another thing to consider is the climate you live in. If you live in a hot and humid climate you may be more susceptible to mold and mildew.  Our patented Spor-Ax technology actually captures and eliminates microorganisms and removing them from your homes air.  If you live in an area that has high pollen count you may need to change your filter more often during spring and fall seasons.  Finally consider the outdoor air quality around your home. If you live in an area that is known for poor air quality or if you live near a busy road you may need to consider a high quality air filter that is changed frequently.  Smog, smoke and other fine particles are the hardest to remove. However they can also be the most harmful. If you’re not sure you can always check your local air quality here.  AIR FILTER MYTH #4…DESTROYED.

Size Doesn’t Matter.  As Long as it Fits It’s Good Enough

Just like with almost any project around the house, choosing the right size is critical.  Your homes air filter is no different. The reason the size of your air filter is so important is because it needs a tight fit to prevent air getting around the filter.  If your filter is too small, air can go around the edges and bypass the filter all together. Installing a filter that is too small could also result in the filter being sucked into your HVAC duct system.  This can lead to costly repairs and damage to your home’s heating and cooling systems. That’s one thing that make Forget My Filter different. All our filters come with a custom fit steel frame thats guaranteed to fit correctly.  AIR FILTER MYTH#5…BLASTED.

Pleated Filters Are The Best Filters For Allergies

Contrary to what you may have been told, pleated filters are not the best for allergy sufferers.  Pleated filters that are MERV10 or higher (Allergen Filters) are quick to clog up. To filter out the finest micro allergen particles the filter material is very dense and doesn’t have much holding capacity.  When this happens, all the dust, pet dander, bacteria, mold spores, mildew etc collects in the filter. Pleated filters are typically made from paper, cotton, cardboard and other organic materials all of which are a food source for these harmful particles.  So imagine this, all the things you are trying to remove from your homes air are multiplying and growing right inside your air filter and being re-circulated throughout your home! Gross! That’s why at FMF all our filters have 3 distinct advantages over pleated filters.  

  1. All our filters are antimicrobial and made from synthetic materials.  No organic materials for the nasty germs and bacteria to feed on.
  2. All our filters are coated with Spor-Ax.  An antimicrobial coating that actually captures and eliminates harmful micro allergens, mold, mold spores, bacteria and other harmful particles.
  3. All our air filters have a 3 stage filtration design.  This means our filters can capture and remove more harmful particles from your homes air without clogging and reducing air flow to your system.



I Can Run My AC Unit Without A Filter

Can you run your AC unit without a filter?  Sure. Does that mean it’s a good idea? No!  That would be like running your car without an oil filter.  You can do it for a while, but you will pay for it eventually.  Clean air is critical to the operation of your HVAC system. As dust and other debris collects inside your system it wears out the internal moving parts.  Just like if you were to run your car without oil. Not to mention, you would be recirculating the same dirty air over and over again without filtering out any harmful particles.  It’s imperative to always have a filter in your homes AC system and to change it regularly. Doing so will provide you with clean air, keep your system running longer, prevent costly repairs and reduce your energy bill.  That’s like a win, win, win, win situation! Sign up now with Forget My Filter and never forget to change your air filter again.

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