Common Furnace Filter Myths That Cost You Money

The Truth About Furnace Filters That Everyone Should Know

One of the most persistent myths in home heating maintenance is that expensive, high-MERV rated filters are always the best choice for your HVAC system. As heating professionals serving the western Chicago suburbs, we regularly encounter homeowners who’ve been misled by marketing claims about filtration.

Let’s break down three common filter myths:

Myth #1: The Higher the MERV Rating, the Better

Actually, using a filter with too high a MERV rating can restrict airflow and force your furnace to work harder than necessary. This can lead to:
• Increased energy costs
• Reduced heating efficiency
• Potential system damage
• Shorter equipment lifespan

Myth #2: Change Filters Every Three Months, No Matter What

The reality is that filter replacement frequency depends on several factors:
• Number of occupants
• Presence of pets
• Local air quality
• Season of the year

Myth #3: Basic Filters Don’t Protect Your System

Standard filters, when changed regularly, can effectively protect your heating system’s components while maintaining proper airflow. Many households don’t need premium filters unless there are specific health concerns or unusual air quality issues.

The Bottom Line

For most homes in Naperville, Plainfield, Warrenville, and Wheaton, a middle-range filter changed according to actual use patterns provides the best balance of protection and performance. Regular maintenance and proper filter selection will keep your system running efficiently and save you money in the long run.

Remember, the best filter choice depends on your specific situation. When in doubt, consult with a professional who can evaluate your system’s needs and recommend the most appropriate option for your home.