The Truth About Filtrete™ Filters and Airflow

Our comprehensive approach to air filter design means that efficient particle capture and optimal airflow can coexist.

When it comes to maintaining the air quality in your home, choosing the right air filter can feel like navigating a maze of information and misinformation. One common point of contention revolves around high-efficiency air filters, like those from Filtrete™ Brand, and the myth that they restrict airflow in your HVAC system.

The myth stems from a misunderstanding of how air filters and HVAC systems function together. Let’s dive into the proof points and uncover the truth.

Proof point 1: We design our filters from scratch.

Unlike other manufacturers that may purchase filter media from third parties, Filtrete™ Brand owns the entire process — from creating the filter fibers to producing the final air filter. “It allows us to innovate and develop every step of the way,” explained Kelsey Hei, 3M senior application engineer. “We can really make sure that we balance the properties of efficiency and airflow.”

The secret behind Filtrete™ Filters’ effectiveness without compromising airflow is their electrostatic charge. This charge acts like a magnet, attracting and capturing microscopic allergens — such as pollen, pet dander and dust mite debris — that could easily pass through less sophisticated filters.

Proof point 2: The real cause of HVAC issues is rarely related to MPR.

A misconception exists that high-efficiency air filters are a common cause of HVAC breakdowns due to restricted airflow. However, HVAC issues frequently arise from a lack of regular filter changes, not the MPR level of the filters themselves.

When an air filter is left unchanged, it can lead to inadequate airflow, causing problems like frozen coils or overheated and overworked motors. Newer HVAC systems have protections like automatic shut-offs to mitigate some of these issues. Proactively replacing your air filter helps ensure optimal airflow and system performance.

Proof point 3: Some higher MPR filters allow more airflow.

Contrary to popular belief, some higher MPR Filtrete™ Filters allow even more airflow than their lower-rated counterparts. “A lot of HVAC pros have the mindset that low-end filters have better airflow [and] high-end filters have less airflow,” Hei said. “In the Filtrete™ Brand, it’s not the case … our best airflow filters are actually some of our higher MPR-rated filters.”

The innovative design and materials used in Filtrete™ Filters ensure that while they are effective at trapping particles, they do not restrict the air passing through your HVAC system. This means that you can achieve superior air quality without sacrificing your comfort or the efficiency of your home’s heating and cooling system.

The takeaway.

The evidence is clear: The notion that Filtrete™ Filters significantly restrict airflow within an HVAC system is nothing more than a myth. Thanks to our dedicated innovation process, intentional focus on balancing efficiency with airflow, and design choices that enhance overall system performance, Filtrete™ Filters are a smart choice for homeowners concerned with both air quality and HVAC efficiency.

Reminder: Ensuring that you change your air filter regularly is one of the most straightforward actions you can take to maintain your system’s performance and indoor air quality.