The Truth About HVAC Air Filters
One of the most persistent myths in home comfort is that you should always opt for the highest-rated HVAC filter available. This widespread misconception actually could be causing more harm than good to your heating and cooling system.
Let’s break down three common filter myths:
Myth #1: The Higher the MERV Rating, the Better
While MERV ratings indicate filtration effectiveness, using a filter with too high a rating can restrict airflow, forcing your system to work harder. This leads to increased energy consumption and potential system damage. Most residential systems work best with MERV ratings between 8-11.
Myth #2: Change Filters Every 90 Days, No Matter What
The reality is that filter replacement timing depends on several factors:
• Pet ownership
• Number of occupants
• Local air quality
• Season (especially during Arizona summers)
• Home location
Myth #3: Any Filter Size Will Work Fine
Using the wrong size filter can create gaps allowing dust to bypass the filter entirely. Always use the exact size recommended for your system.
The Bottom Line
Proper filter selection and maintenance are crucial for system efficiency in our unique desert climate. Regular professional maintenance ensures your system operates at peak performance while maintaining optimal indoor air quality.
Remember, what works in humid climates may not be ideal for our dry, dusty Arizona conditions. Consulting with HVAC professionals who understand local conditions will help you make the best choices for your system’s longevity and your home’s comfort.
