18x20x1 AIRx ALLERGY Air Filter - MERV 11

AIRx 18x20x1-ALLERGY | Our#: 109903
6 pack
 
 

18x20x1 AIRx ALLERGY Air Filter - MERV 11

  • MERV 11 Rated
  • Change Every 3 Months
  • 18x20x1" Nominal
  • 17½x19½x¾" Actual
As Low As $7.45 Per Filter
In Stock
Ships Today
Est. Delivery By Oct. 24th
Choose a quantity

If you want to promote superior air quality in your home, this is the air filter for you!   The specialized media in the filter attracts and captures small particles that can cause allergies.   We carry your size of air conditioner filter or furnace filter.  We offer convenient online ordering and quick shipping right to your door!

  • Pleated media provides extended surface area for filtration, and low resistance to airflow
  • MERV 11 rating means the filter attracts household allergens like dust, pollen, mold spores, dander, smoke and smog
  • Replace every 90 days under normal use
  • Made with pride in the USA
  • 100% free returns on all filters

REVIEW SNAPSHOT®

by PowerReviews
Koch Filter Corporation18" X 20" X 1" MERV 11 Pleated Filter
 
4.7

(based on 36 reviews)

92%

of respondents would recommend this to a friend.

Pros

  • Good size/fit (24)
  • Easy to install (20)
  • Good value (15)
  • Durable (11)
  • Quiet (6)

Cons

    Best Uses

    • Central AC (26)
    • Central heating (18)
    • Home (13)
      • Reviewer Profile:
      • Homeowner (33)

    Reviewed by 36 customers

    Sort by

    Displaying reviews 1-10

    Back to top

    Previous | Next »

     
    2.0

    Damaged during shipping

    By Merv99

    from Washington DC

    About Me Homeowner

    Verified Buyer

    Pros

    • Easy To Install
    • Good Fit

    Cons

      Best Uses

      • Central AC

      Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

      Filters work well. Will get 4 stars when I don't have to fix half the batch before using them.

       
      5.0

      Fast shipping

      By poor girl

      from Miami FL

      About Me Homeowner

      Verified Buyer

      Pros

      • Easy To Install
      • Good Fit
      • Good Value

      Cons

        Best Uses

        • Central AC

        Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

        Great product, fast service and shipping. I will definitely use your web site again.

         
        5.0

        quality filters

        By homestead

        from homestead,florida

        About Me Homeowner

        Verified Buyer

        Pros

        • Good Value

        Cons

        • Energy Inefficient

        Best Uses

        • Central AC

        Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

        It said good for 3 month but at 2 month is to clog.

         
        5.0

        very satisfied withthe filters.

        By no

        from clearwater,Fl.

        About Me Homeowner

        Verified Buyer

        Pros

        • Compact
        • Durable
        • Easy To Install
        • Good Fit
        • Good Value
        • Quiet

        Cons

          Best Uses

          • Central AC
          • Central Heating

          Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

          happy

           
          4.0

          Fit like it should

          By mike

          from ottawa, il

          About Me Homeowner

          Verified Buyer

          Pros

          • Fit Like It Should
          • Good Fit
          • Good Value

          Cons

            Best Uses

            • Central AC

            Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

            Seems that they work as stated. I will update after a filter change if needed. They look durable and sturdy. Dust and animal hair has been reduced in the house noticeably.

             
            5.0

            will recommend

            By ajc

            from homestead,florida

            About Me Homeowner

            Verified Buyer

            Pros

            • Good Fit

            Cons

              Best Uses

              • Central AC

              Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

              fast delivery

               
              2.0

              FILTER 18X20

              By Roger

              from Pompano Beach FL

              About Me Homeowner

              Verified Buyer

              Pros

              • Good Value

              Cons

              • Difficult To Install

              Best Uses

              • Home

              Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

              The problem is the size. Because it is not 20" inches wide so it keeps going out.

               
              5.0

              Just what I needed

              By Matt

              from Woodstock, GA

              About Me Homeowner

              Verified Buyer

              Pros

              • Easy To Install
              • Good Fit
              • Good Value

              Cons

                Best Uses

                • Central AC
                • Central Heating
                • Home

                Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

                Just as I ordered.

                 
                3.0

                Would buy again if packaging is enhanced

                By Bradley

                from Holiday, Florida

                About Me Homeowner

                Verified Buyer

                Pros

                • Easy To Install

                Cons

                  Best Uses

                  • Central AC
                  • Central Heating
                  • Home

                  Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

                  Packaging needs to be re-structured to keep filters from being flat and not fitting well. Filters are good quality .

                   
                  4.0

                  Nice product

                  By Mom of 3

                  from Gig Harbor, WA

                  About Me Homeowner

                  Verified Buyer

                  Pros

                  • Easy To Install
                  • Good Fit
                  • Good Value
                  • Quiet

                  Cons

                    Best Uses

                    • Central AC
                    • Central Heating

                    Comments about Koch Filter Corporation 18" X 20" X 1" MERV 11 Pleated Filter:

                    No comments

                    Displaying reviews 1-10

                    Back to top

                    Previous | Next »

                    Product Literature