Common Misconceptions About Air Filtration

One of the most persistent myths in home comfort systems is that the most expensive, highest-rated HVAC air filters are always the best choice for your home. At MASI Plumbing, Heating & AC, we regularly encounter homeowners who believe this misconception, and it’s time to set the record straight.

The truth is that choosing the right filter depends on several factors specific to your home and system. Here’s why:

Understanding MERV Ratings

MERV (Minimum Efficiency Reporting Value) ratings range from 1-20, with higher numbers indicating finer filtration. However, using a filter with too high a MERV rating can actually:

• Restrict airflow to your HVAC system
• Make your system work harder than necessary
• Increase energy costs
• Potentially damage your equipment

For most residential systems, a MERV rating between 8-13 provides excellent filtration without compromising system performance. These mid-range filters effectively capture:

• Dust and pollen
• Pet dander
• Most airborne particles

The Bottom Line

While premium filters have their place, particularly in homes with specific health concerns or medical needs, the average household doesn’t require the highest-rated filtration available. Regular maintenance and proper filter selection based on your system’s specifications will ensure optimal performance and air quality.

Remember to consult with qualified HVAC professionals who can recommend the most appropriate filtration solution for your specific system and needs. Your wallet – and your HVAC system – will thank you.