Separating Fact from Fiction: The Truth About HVAC Filters
One of the most persistent myths in home comfort is that the more expensive an HVAC filter is, the better it must be for your system. This misconception leads many homeowners to waste money and potentially harm their heating and cooling equipment.
Let’s break down some common filter myths:
Myth #1: The Thicker the Filter, the Better
Actually, using a filter that’s too thick can restrict airflow through your system, forcing it to work harder and increasing energy costs. Your HVAC system is designed to work with a specific level of air resistance.
Myth #2: You Only Need to Change Filters Once a Year
This dangerous myth can lead to:
• Reduced system efficiency
• Higher energy bills
• Premature system wear
• Poor indoor air quality
Most filters should be changed every 1-3 months, depending on usage and household conditions.
Myth #3: All MERV Ratings Are Suitable for Every System
MERV (Minimum Efficiency Reporting Value) ratings aren’t one-size-fits-all. Using a filter with too high a MERV rating can actually damage your system if it’s not designed for that level of filtration.
The Bottom Line
Regular maintenance with the correct filter type is key to system longevity and efficiency. When in doubt, consult with a professional HVAC technician who can recommend the right filter for your specific system and needs.
Remember to check your filter monthly and replace it when it appears dirty, regardless of how much time has passed. This simple practice can save you money and extend the life of your heating and cooling system.
