How to Choose the Right Air Filter for Your HVAC System

How to Choose the Right Air Filter for Your HVAC System

With so many air filter options on the market, it can be overwhelming to know which filter is best for your home. The first step is to pick a filter that’s sized correctly for your system, which you can find in your HVAC unit owner’s manual. Read on for other important considerations when selecting an air filter for your HVAC system.

Understanding MERV Ratings

The Minimum Efficiency Reporting Value (MERV) rating measures an air filter’s efficiency in trapping airborne particles. Filters typically range from MERV 1 to MERV 16, with higher numbers capturing smaller particles. For most homes, a filter with a MERV rating between 8 and 13 is ideal. These filters capture common household pollutants, like dust, pollen, and pet dander, without restricting airflow. Higher-rated filters trap finer particles, but they may reduce airflow in certain systems, so check your owner’s manual to be sure.

Types of Air Filters

Fiberglass Filters

Basic and affordable, fiberglass filters trap larger particles like dust and lint. However, they don’t capture smaller pollutants, so they’re best for homes with minimal allergy concerns.

Pleated Filters

Pleated filters capture smaller particles than fiberglass and have a higher MERV rating, making them ideal for homes with pets or allergy sufferers.

HEPA Filters

Known for their high efficiency, HEPA filters can trap up to 99.97% of airborne particles. However, too dense for some HVAC systems, so check with a professional before upgrading.

How Often Should You Replace Your Filter?

Air filters should be replaced every 1-3 months, depending on the type and conditions in your home. Homes with pets, smokers, or residents with allergies may benefit from more frequent changes to maintain good air quality. Some filters are also reusable, but they need to be cleaned thoroughly between each use, and may not capture particles as well as others. Also remember that while filter changes are important, you also need annual cooling and heating system maintenance from a professional to tune the unit itself and preserve the manufacturer’s warranty.

When it’s time to replace your filter, or if you need advice on selecting the best one, our team at McFarland Indoor Comfort Services in Granite City, IL, is here to help. Reach out today to ensure your HVAC system runs smoothly with an HVAC maintenance plan, system upgrades, and more.