If you're looking to replace the air filter in your heating, ventilation and air conditioning (HVAC) system, you'll need to know the size of the filter you need. Fortunately, it's easy to determine what size air filter is best for your AC. Start by examining your current air filter. Most filters have the measurements listed on the side, including the length, width, and depth in inches.
These measurements usually appear in that order. If you don't have an existing filter, you can check the user's manual or the manufacturer's website for the size of the filter. Once you know the size of your air filter, you can start searching for a replacement. There are thousands of air filters available, so it can be difficult to find the right one for your HVAC system. To narrow down your choices, consider limiting yourself to filters with a specific depth.
Standard air filters come in depths of 1 (0.75 inches), 2 (1.75 inches) and 4 (3.75 inches).When selecting an air filter, it's important to consider not only its size but also its power. The industry standard is to use the Minimum Efficiency Reporting Value (MERV) classification system to determine a filter's power. The MERV rating indicates what type of airborne contaminants are ideal for capturing each filter. Finally, make sure to check the replacement schedule for your air filter. This information is usually listed in the user's manual or on the manufacturer's website.
Replacing your air filter regularly is essential for keeping your HVAC system running efficiently and ensuring that unwanted contaminants don't enter your home's air.
