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. This misconception costs homeowners hundreds of unnecessary dollars each year while potentially causing more problems than they solve.

The Truth About Filter Ratings

Many homeowners believe that purchasing the highest MERV (Minimum Efficiency Reporting Value) rated filter will provide the best indoor air quality and protection for their heating system. However, this isn’t always the case.

Here’s what you need to know:

• High MERV filters can restrict airflow if your system isn’t designed for them
• Basic filters (MERV 8-11) are usually sufficient for most residential systems
• Changing filters regularly is more important than buying expensive ones
• Over-filtration can strain your furnace’s blower motor

What Actually Works

Instead of focusing solely on filter ratings, consider these practical steps:

1. Regular filter changes (every 1-3 months)
2. Professional maintenance twice yearly
3. Using the filter type recommended by your system’s manufacturer
4. Keeping return air vents clean and unobstructed

The Bottom Line

While maintaining good air quality is important, don’t fall for marketing hype about premium filters. Most residential HVAC systems work best with medium-efficiency filters that are changed regularly. Save money by focusing on consistent maintenance rather than overspending on unnecessary filtration.

Remember, when in doubt about which filter type is best for your specific system, consult with a professional HVAC technician who can evaluate your unique needs and system specifications.