Furnace Filters for HVAC Systems

The Honeywell Store offers a robust range of Honeywell Furnace Filters for HVAC Systems. Capable of improving the quality of air you breathe by capturing dust, allergens and more potentially hazardous contaminants, Honeywell Furnace HVAC Filters are available in a variety of sizes (1 in. filters are also now available!) and MERV types. A large selection of sizes ensures a wide compatibility range when selecting the appropriate air filter for your furnace. If you’re new to purchasing an HVAC filter, you’ll want to get the sizing just right to ensure the best performance possible. Here’s an easy step by step guide for doing just that:

Measuring Furnace Filters for HVAC Systems 

• Step 1: You’ll want to turn off your HVAC unit before removing the air filter.

• Step 2: Locate your home’s HVAC system and remove the air filter.

• Step 3: The measurements of the filter should be printed on its side. If they’re not, don’t worry! Simply grab a tape measure and do the following:

  • You’ll want to measure the filter’s length and width. This will provide you with the filter's (L x W).

  • You’ll then want to measure the filter’s thickness (or depth) from front to back (D). This will always be your smallest number.

Now gather all of the numbers together. The result should look like this (L x W x D). Congratulations! These are the measurements of your home’s HVAC Filter. Home HVAC Systems often vary in size. When you combine this with the large amount of Honeywell HVAC Filters readily available for online purchase at the Honeywell Store, it’s essential that you gather the correct measurements! Now that we’ve covered sizing, let’s take a look at MERV Rating.

Understanding an Air Filter’s MERV Rating

MERV or 'Minimum Efficiency Reporting Value' is used to rate the overall effectiveness of an air filter. Below you will find a table that measures the MERV strength and tells you the application of each HVAC filter’s effectiveness. In general, an air filter with a higher MERV Rating is more effective and has a broader application, but most residential homes will find the best use from an air filter that’s between the 5-13 MERV rating