18x25x1 Air Filters for Furnace & AC

The pleated 18x25x1 air filter is the best choice for long-term residents for maintaining extra pollutant and allergen protection since they are better at catching allergens. If the residence includes pets, their shedding produces pet dander, therefore can trigger allergic reactions.

Merv Filters LLC specializes in providing high-quality air filters for residential and commercial use. Not only we do offer standard air filter sizes, but we also offer custom sizing on ALL of our air filters.

Product Specifications

  • Nominal size: 18x25x1
  • Made in: USA
  • Actual Size: 17 1/2 x 24 1/2 x 3/4
  • Price: $30.00 – $97.20
  • 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 18x25x1 Filter


Our 18x25x1 furnace filter has a lifetime of 90 days. But we recommend to residences where young children, the elderly, and someone with lung disease, should change air filters of their HVAC system every 30-60 days.

Made In The USA

Our 18x25x1 air filters are “Made in the USA”. We offer deals on bulk commercial orders.

Ultra High Quality

When it comes to quality of 18x25x1 furnace filter, Merv Filters LLC delivers high-quality custom furnace and air conditioning filters to your door. Pleated air filters are more efficient and have a larger dust holding capacity.


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 colour of ac filter 18x25x1 may differ from the colour of the actual product due to lighting sources during photography and variations in your monitors.

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