In this series, we address the top 3 maintenance tasks a homeowner can do to help increase the efficiency and longevity of their HVAC system.


When it comes to HVAC maintenance, changing your air filters is, by far, the best and easiest way to help with system performance.


Air filters primarily capture dust, pet hair, and other large debris circulating throughout your home. Without them, or with “cheap” filters, these particles pass into your coil, hinder the air conditioner’s performance, raise your electric bill, and ultimately cause the unit to fail. Alternatively, a filter that is in-place, but overdue for replacement, will become clogged with debris.

High Quality Air Filter - Front Side

Front side of high quality air filter – dust, dander, debris clearly visible

This obstruction can cause the unit to freeze up due to lack of airflow, at worst; at best, the system will operate harder and less efficiently, which may be reflected as a pricier electric bill. Our technician’s are happy to remedy either problem for you, but they likely could have been prevented by a simple investment of time and money in quality filters.


How do I change my filters?

Air filters are typically located under the air handler or furnace, and also found in filter-back grills throughout the home. They are usually easily accessible, possibly requiring a step-ladder to reach; tools are generally not required. Simply open the access door or panel, remove the dirty filter, set the new one in place, and secure the door/panel.

Air Filter Located in Ceiling

Example of air filter in grill located in hall ceiling


How often should I change my filters?

Depends. Ideally, you should visually inspect your filters once per month. High quality filters should be replaced approximately every 3 months, but circumstances can influence this frequency. For example, remodeling your home? Pets shedding hair in the summer? Consider that your filters have been working double-time to eliminate this excess debris, and replace them earlier than scheduled.


How do I know if I’m using quality filters?

Assurance Aire recommends air filters with a MERV (Minimum Efficiency Reporting Value) rating of 8 or higher. Many options can be found at

High Quality Air Filter - Back Side

Back side of high quality air filter – dust, dander, debris does not pass through


If you have questions regarding your air filters, or suspect your air conditioner may be running harder than it should, comment below or give us a call at 321-289-1660.