Filterbuy 14x18x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack
Filterbuy 14x18x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack
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Filterbuy 14x18x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 1-Pack

|11.8K ratings

Key item features

  • Universal Compatibility: This 14x18x1 replacement air filter (actual size: 13.50" x 17.50" x 0.75") is designed for furnaces, air conditioners, or heat pumps, enhancing HVAC system efficiency.
  • Superior Filtration: MERV 11 synthetic media, comparable to MPR 1200 & FPR 7, captures 95% of dust, smoke, smog, lint, pollen, mold, and dander without restricting airflow.
  • Extended Lifespan: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts three times longer than fiberglass models, requiring replacement every 90 days.
  • Durable Construction: Features industrial-grade beverage board frames with dual wire backing, outperforming cardboard by improving durability, preventing warping, and resisting temperatures up to 200°F.
  • Domestic Manufacturing: Built with recyclable materials and proudly manufactured 100% domestically for dependable indoor air quality.
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Customer ratings & reviews

4.7 out of 5 stars
stars
11.8K ratings3,949 reviews
How item rating is calculated
  1. 5 stars85% (10K)
  2. 4 stars8% (933)
  3. 3 stars3% (310)
  4. 2 stars1% (148)
  5. 1 star3% (402)
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Showing 1-3 of 3,949 reviews

Apr 23, 2026
Reviewer name: Yurimar
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great Airflow %26 Helps with Allergies

Really happy with this air filter. It fits perfectly and was easy to install. I've noticed the air in my home feels cleaner, and it definitely helps with dust and allergies. The airflow is still good (doesn't block the AC), which was something I was worried about with a higher MERV rating. It seems durable and well made for the price. Overall, great value and I will keep buying this brand

Helpful?4VWZKEILBHTX2622072963
Sep 16, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

My filters came nicely boxed

My filters came nicely boxed and they were in perfect condition. I replaced the same size that was in my air-conditioning vent area and I had a gentleman out to clean my vents and he told me my size is actually probably a 16. 5 so it would be a 16. 5 x 25 by one. Kind of crazy, but the product was perfect.

Review from Filterbuy
Helpful?4VWZKEILBHTX2622072963
Sep 3, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

The quality of the cardboard

The quality of the cardboard used to stabilize the filter is far above anything I have bought at the big box stores. . I used to be in the HVAC industry so believe me when I say the cost is very reasonable. I will definitely be a customer for life. Thanks for making such a quality product. .

Review from Filterbuy
Helpful?4VWZKEILBHTX2622072963
Current price is $32.99$32.99/in
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Sold and shipped by FilterbuyPro Seller
4.593830888697153 out of 5 stars
4.6 stars out of 5, based on 4636 seller reviews(4.6)
Extended holiday returns
Free Holiday returns until Jan 31