18x18x1 Air Filters for Furnace & AC

Removing pollutants from your indoor air lets your family breathe cleaner. Your HVAC’s filter plays an important role in reducing your home’s allergens and keeping indoor quality dust-free. Merv Filters LLC recommends its clients to change the filter on a regular basis. We offer a variety of air filters in standard and custom sizes.

Pleated 18x18x1 air filters last longer than fiberglass filters, you can change every 90 days. But if you own pets or you are allergy sensitive, it’s recommended to change the air filter every 30-60 days.

Product Specifications

  • Nominal size: 18x18x1
  • Made in: USA
  • Actual Size: 17 1/2 x 17 1/2 x 3/4
  • Price: $30.00 – $129.60
  • Available in: 4, 6,12 Packs
  • Designed to last: 90 days
  • Pleats made of: Synthetic media
  • Frame made of: Beverage board
  • Delivery Time: Within 3-5 business days from the order date

Benefits of the Merv Filters LLC 18x18x1 Filter


The filters provided by Merv Filters LLC has an ability to last for 90 days, which is more than fiberglass filters. Since pleated 18x18x1 furnace filter holds smaller particulates such as pollen, dander, and other allergens; which in turn increases the lifespan of your furnace.

Made In The USA

Merv Filters LLC manufactures air filters in the USA. We also offer special discounts on bulk orders, so purchase directly from the manufacturer.

Ultra High Quality

The advanced pleat technology used in 18x18x1 filter protects your HVAC system from damage that leads to costly repairs and even replacement. Our filters are an ideal choice for people suffering from Asthma.


Ideal for basic and standard residential and commercial use.

MERV 11:

Ideal for standard and superior residential and commercial use.

MERV 13:

Ideal for superior residential and commercial use and smoking lounges.

Note: The ac filter 18x18x1 colour may vary from the actual product due to reflection during photography and differences in your screens.

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