Common Furnace Filter Myths That Could Cost You Money


Let’s Clear the Air About Furnace Filters

One of the most persistent myths in home heating maintenance is that expensive furnace filters are always better than basic ones. As HVAC professionals serving Chicago and the North Shore, we regularly encounter homeowners who’ve been misled by this common misconception.

Here are the top filter myths we need to debunk:

Myth #1: The More Expensive, The Better

Higher-priced filters aren’t necessarily the best choice for every home heating system. In fact, filters that are too dense can restrict airflow and force your furnace to work harder, potentially leading to increased energy costs and system strain.

Myth #2: Change Filters Every 90 Days, No Matter What

While this is a good general guideline, filter replacement frequency should depend on:
• Pet ownership
• Number of occupants
• Local air quality
• Season of the year
• Type of filter used

Myth #3: MERV Ratings Don’t Matter

MERV (Minimum Efficiency Reporting Value) ratings are crucial, but higher isn’t always better. Most residential systems work best with filters rated between MERV 8-11. Anything higher could restrict airflow too much.

The Truth About Furnace Filters

The best filter for your system is one that:
• Matches your furnace’s specifications
• Provides adequate air filtration
• Allows proper airflow
• Gets changed regularly

Remember, proper filter maintenance is just one aspect of keeping your heating system running efficiently. Regular professional maintenance ensures optimal performance and longevity of your furnace.

By understanding these facts about furnace filters, you can make informed decisions that will help maintain your system’s efficiency while keeping your home comfortable throughout Chicago’s cold winters.