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Air Filtration System Services in Birmingham, AL

Did you know that there are about 40 million people in US suffering from allergies? If you are one of these people, you know how challenging this can be, especially if you have a secondary issue like asthma. Keeping your home as clear of allergens as possible can be difficult, but an air filtration system can put you ahead of the curve. One of the great advantages of having a centralized HVAC system is that it can be easily upgraded to help you improve your indoor air quality. This is because components like air filters integrate seamlessly with your existing system. Why choose a whole home air filter rather than room-by-room? Simply put, a whole home air filtration system is going to provide far more benefits because it can handle your whole house; room air filters clean only a small amount of square feet, leaving plenty of latitude for allergens to keep swirling in your home. Our experts can help you choose the right air filter for your home and install it correctly so that you can enjoy fresh, clean air.


Need help with an air filtration system in Birmingham? Call the experts you can count on: Air Conditioning Experts!

How Does an Air Filter Work?

You’ve probably seen an air filter, but if you haven’t, it is typically a square frame that contains filter media stretched to each side of the frame. It is the filter media that actually captures contaminants, and there are two ways in which this is accomplished. First, many contaminants are attracted to the material of the filter media; as such, they a drawn to it, then become stuck. The second way has to do with the fold of the media. Many filters have v–shaped folds throughout the material. As air passes through the filter media, contaminants come into contact with fold after fold, eventually getting caught in the material. The amount of contaminants a particular filter can capture will depend highly on its MERV rating.

What Is MERV and Why Does It Matter?

The acronym MERV stands for minimum efficiency reporting value, and what it tells you, on a scale of 1 to 20 (with 1 being the lowest), is how effective a particular air filter will be. The air filter that comes standard with your HVAC system typically has a MERV rating between 1–4; this is why a standard air filter is not a good choice for improving your indoor air quality. For an air filter to improve the quality of your indoor air, you should be looking at air filters that range between MERV 5–12. Here is a general overview of what kinds of particles are captured by filters in this MERV range:

  • 5–8 – this MERV range is able to capture smaller particles of dust and dirt, pet dander and many types of pollen, making these air filters very helpful for those with mild to moderate allergies.
  • 9–12 – filters in this MERV range capture all of the above, but also capture some quite small particles, including some mold and mildew spores and larger viruses and bacteria. As such, these types of filters can be of great assistance to those with both allergies and chronic problems like asthma.

You may be wondering what the MERV range of 13–20 is for. HEPA air filters start at MERV 13, and while this initially may seem like a great idea for your home, it actually may not be the best choice for you. This is because HEPA filters can restrict the air flow in your HVAC system too much. If you are interested in a HEPA air filter for your system, consult with one of our indoor air quality specialists first.