Leaky Filters, Dirty Air: What You Need to Know
Poorly fitting furnace air filters are a hidden but significant problem affecting indoor air quality and HVAC system performance. When a filter doesn’t fit securely within its housing, it leaves gaps that allow unfiltered air to bypass the filter entirely.
Instead of trapping dust, allergens, and other airborne contaminants, these pollutants flow freely around the filter and circulate throughout your home. This not only defeats the purpose of having a filter in the first place but also contributes to the buildup of dust and debris inside your HVAC system, leading to reduced efficiency and costly maintenance issues.



Additionally, air filters that are too small or incorrectly sized can cause uneven airflow, forcing your furnace or air conditioner to work harder to maintain a comfortable temperature. This added strain increases energy consumption and may shorten the lifespan of your equipment.
To ensure proper air filtration and system efficiency, it’s critical to use correctly sized filters that create a tight seal, preventing air leakage and ensuring that all air passes through the filtration media before being recirculated.


To ensure that all the air and pollutants go through your air filter and not around it, AIRTEVA Filters feature a patented Leak-Guard Seal. When your air conditioner or furnace turns on, the difference in pressure causes an airtight seal. No bypass means you're filtering 100% of the air. That means the harmful particles get trapped in the air filter, rather than in the lungs of you and your family.