How to Choose the Right Furnace Filter

Choosing the right furnace filter for your home is an important decision. It's essential to select the correct size and type of filter to ensure your HVAC system and home are properly protected. To make the right choice, you'll need to understand the basics of filter dimensions, MERV ratings, and airflow restriction. When selecting a furnace filter, it's important to refer to the oven manual or existing filter to determine the correct size.

The dimensions of a filter are typically listed as length x width x depth. For example, an oven filter measuring 18 x 16 x 1 is 18 inches long, 16 inches wide, and 1 inch deep. The type of filter you choose is also important. Cheap woven fiberglass filters can remove dirt and debris that could damage your oven blower motor, while removing some of the pollen and mold spores.

However, filters with high MERV ratings can restrict airflow and cause system malfunctions. We recommend that you select a filter with a MERV rating between 9 and 12 to properly protect your HVAC system and home. If you're not sure which filter is right for your system, consult an HVAC contractor who specializes in furnace repair in St. Paul to help you determine your specific needs. The Minimum Efficiency Report Value (MERV) measures the effectiveness of an oven air filter in capturing particulate matter.

A higher MERV rating indicates that the filter is more effective at capturing smaller particles such as dust mites, pet dander, smoke, and smog. Being able to choose the best air filter requires a basic understanding of MERV ratings and how they reflect filter quality. Another important aspect to consider when choosing a filter is airflow restriction or static pressure drop across the filter. A clogged filter can cause both the oven and the air conditioner to work harder and less efficiently. Choosing a filter with too much airflow restriction will cause your oven to work harder and could increase your energy bills and lead to increased equipment failure. How often you need to replace your oven filter will depend on the type you purchased and the air quality in your home.

You might wonder why oven filter prices range so wide and if you'll get your money's worth with an expensive one. The answer is yes - investing in a quality furnace filter will help protect your HVAC system from dirt and debris while also improving air quality in your home.

Mary Swopshire
Mary Swopshire

Friendly beer aficionado. Tv nerd. Hipster-friendly writer. Friendly internet specialist. Professional beer maven. Extreme twitter guru.

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