Air Filter

There are many aspects of your HVAC system that need to be handled by a professional, but filters are part of any self-maintenance program. With so many filters, brands, and systems out there, myths about filters have spread and many of our clients don’t know what to believe. We will help debunk some of these myths, so you can be confident when changing your own filter.

Myth 1: You don’t need to change your filter as often as the packaging says. It’s just a ploy for you to buy more filters.

This one is a biggie! The average time between filter changes is three months. In those 90 days, there is a lot of dirt, particles, pollen, and pet dander that is collected. If you don’t replace your filter, all of the collected debris will continue to circulate as well as make the system work harder to push air through the filter. Fact 1: Change your filter every 3 months.

Myth 2: Air filters just keep out dust.

Years ago, this myth was true. Today’s filters are smarter and better developed to filter out dust, allergens, bacteria, viruses, and other particles that can cause allergies, coughing, sneezing, and watery eyes. Fact 2: Filters keep out many different types of debris.

Myth 3: All air filters are the same. The more expensive ones are just there for you to spend more.

There are many different ratings of air filters using the MERV scale (Maximum Efficiency Reporting Value). Starting at 6 and going up to 13, the higher the number, the more particles the filter will pull out of the air. Depending on your preference, you can choose which filter suits your needs best. Fact 3: Filters come in many different levels, so you can choose your preference.

hvac filter myths

Myth 4: Air filters can be inserted facing any direction.

Following the flow of air is essential to the proper catching of debris and dust. Ensure you are paying attention to the arrows on the filter so it can work properly. Fact 4: Arrows on air filters need to be heeded.

Myth 5: Air filters are all the same size.

If you’ve shopped for any air filters, you know this is a myth. There is a wide range of sizes that fit specific HVAC units and air intake openings. To ensure the proper fit, measure your old air filter before ordering or purchasing a new one. If your filter isn’t snug, unfiltered air will seep in around the edges which defeats its intended purpose. Fact 5: Air filters come in many sizes so make sure you purchase the correct size for your unit.