Air Filters for HVAC Systems

Installing new house air filters, or furnace filters, regularly is an important part of heating, ventilating and air conditioning (HVAC) maintenance. These filters help remove many contaminants and allergens from the air and protect your HVAC system from damaging debris as the system circulates cool or warm air. Choose from a variety of filters, including pet dander air filters, dust air filters and smoke air filters, which capture particles ranging from large to invisible to create a cleaner, healthier home. Learn about how filters work and their benefits by reading Reduce Allergens in Your Home.

While some air conditioners have reusable filters, others use disposable filters that you can simply replace with no cleaning. With these, you’ll need to make sure you adhere to a regular air filter replacement schedule. Plan on changing pleated HVAC filters every 90 days and basic, spun-fiberglass filters about once a month. Depending on the conditions in your home, such as dust levels or the presence of pets, or if you notice the filters seem particularly dirty when you change them, you may need to change your filters more often. For more information, read our comprehensive guide on filters, Change Your Home Air Filters for Better Air Quality.

Filters come in different sizes to fit different air conditioner (A/C) units. Filter sizes specify filter dimensions in inches — such as 20 by 25 by 1 — with the numbers referring to width, height and thickness. You’ll also observe that some filters are pleated, and some are flat. The best in-home air filters are pleated with a minimum efficiency reporting value (MERV) rating of 8 to 13. Pleats catch more particles and allow better airflow. A higher MERV rating indicates that a filter traps more particles. However, a filter with a MERV rating that’s too high can restrict airflow too much and cause excess wear on your HVAC equipment.

Find the right air filters for your home at Lowe’s. Our range of HVAC solutions includes everything from air filters for specific rooms to whole home air filters that are designed to trap dust, allergens and other airborne irritants — delivering better air quality for you and your family.

K&N 14 x 30 x 1 Air Filters

K&N 14 x 30 x 1 Washable MERV 11 Pleated Air Filter

3.8

K&N 14 x 30 x 1 Washable MERV 8 Pleated Air Filter

3.0

K&N
14 x 30 x 1 Washable MERV 11 Pleated Air Filter

K&N
14 x 30 x 1 Washable MERV 8 Pleated Air Filter