What Are MERV Ratings and Why Should You Care?
When it comes to maintaining optimal indoor air quality, one of the most critical factors to understand is the MERV rating system for air filters. At Heating & Cooling Two Inc., we regularly educate our customers about these essential measurements that determine filter effectiveness.
Breaking Down MERV Ratings
MERV (Minimum Efficiency Reporting Value) ratings range from 1 to 20, with higher numbers indicating better filtration. Here’s what you need to know about common MERV ratings:
- MERV 1-4: Basic filtration for large particles
- MERV 5-8: Medium filtration, good for residential use
- MERV 9-12: Superior residential filtration
- MERV 13-16: Hospital-grade filtration
- MERV 17-20: Clean room and surgical facility grade
Choosing the Right MERV Rating
Most residential HVAC systems work best with filters rated between MERV 8 and MERV 13. Going too high can actually restrict airflow and strain your system, while too low might not provide adequate filtration for your needs.
Impact on Energy Efficiency
The right filter rating doesn’t just affect air quality – it directly impacts your system’s energy efficiency. A properly rated filter helps maintain optimal airflow while keeping your system clean, potentially reducing energy costs by up to 15%.
Maintenance Considerations
Remember that higher MERV ratings typically mean more frequent filter changes. We recommend checking your filter monthly and replacing it at least every three months, depending on your specific rating and household conditions.
Regular maintenance and proper filter selection are essential for optimal HVAC performance. Contact Heating & Cooling Two Inc. for professional guidance on selecting the right MERV rating for your specific system and needs.