Stay on Top of Allergy Season by Upgrading Your Furnace Filter

best furnace filters
When you buy something through our retail links, we may earn commission and the retailer may receive certain auditable data for accounting purposes.

When was the last time you changed your home’s air filters? Most pros recommend changing HVAC filters at least every three months. But you might want to do so about once per month if you have allergies.

And while the frequency of changing your furnace filters matters, so does the quality of the filter itself.

Quality air filters eliminate allergens like dust, dirt, pet dander and mold from the air. And upgrading the filters in your home might keep your sneezing in check. However, it’s important to do your research before committing to a product.

When looking at potential air filters, one of the most important details to check is the Minimum Efficiency Reporting Value (MERV), which represents the overall effectiveness of the filter on a scale of one to 16. Most household filters have a MERV between one and 13.

You should also check the micro-particle performing rating (MPR), which can range from 300 to 1,900 in most households. A filter with a higher MPR will capture more particles like dust and dander.

Now that you know the technical specs to look for, here are some of the best furnace air filters to consider for your home.


1. 3M Filtrete AC Furnace Filter

This disposable air filter has a 300 MPRS and MERV 5, which filters out particles without restricting air flow. You can select between two sizes to fit your furnace or air conditioning unit. The electrostatic filter material traps dirt, smoke, dust and pet dander, preventing these particles from circulating in your home. After buying, you can join the Filtrete 365 Program and receive reminders to change the filter every 90 days.

Pros: You receive six filters with your purchase, so the pack may last over a year. The filter is easy to install.

Con: The filter might not fit every system perfectly. This product isn’t reusable.

furnace filter Amazon


2. Nordic Pure Pleated Furnace Filter

This filter includes a antimicrobial and hypoallergenic electrostatic material. You can select from several MERV ratings, as the filter is available up to MERV 13. At MERV 12, the filter can trap particles as small as 0.3 microns. The frame is easy to install and made of recycled beverage board paper. For optimal filtration, be sure to change the filter every 30 to 90 days.

Pros: The high MERV is great for keeping your air clean. You can purchase up to 12 filters in one pack.

Cons: The higher MERV can cause restricted air flow, especially in lower power units.

furnace filter Amazon


3. FilterBuy Pleated Air Filter

FilterBuy’s produce is compatible with both furnaces and air conditioning units. The MERV 8 technology traps 90% of particles, while keeping air flow steady. This product is made of beverage board, which can withstand temperatures up to 200 degree Fahrenheit and high humidity. You will need to change this filter about every three months. The product is available in a wide variety of sizes, which are rounded to the nearest inch.

Pros: These filters keep air flowing smoothly. You can select three-month auto delivery when buying.

Cons: The filter sizes run small. A poor fit might cause a rattling sound.

furnace filter Amazon


4. K&N HVAC Air Filter

K&N’s MERV 11 air filters are available in a selection of sizes, and you can easily install this product in your furnace or air conditioning unit. This product is reusable, and the synthetic filter material is easy to wash. The company has a special cleaning spray available as well.

Pros: According to K&N, the filter can last a lifetime when washed regularly. Reusing the filter will save you money over time.

Cons: Some sizes might be at least a quarter inch too small, requiring an insert to fill the gap.

furnace filter Amazon


5. Honeywell Home MicroDefense Filter

This product includes a cardboard frame and polypropylene filter. The electrostatic fibers capture most household particles without restricting air flow. This filter is 16 x 25 x 4 inches, so check the measurements of your unit before purchasing. In normal household conditions, this product can last up to a year.

Pros: MERV 8 filters are a solid option for most homes. The product comes in a pack of two.

Cons: The cardboard frame isn’t the most durable. This can cause it to become damaged during shipping.

furnace filter Amazon