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How does it Work?

Armstrong 'Pro Series' Replacement Air Filters

  1. Pick Your Filters
  2. Coose the Quality
  3. Tell Us How Often
  4. Start Service and Relax

When it comes to cooling and heating a home, Armstrong Air is the Professional’s choice. It’s the brand more dealers would choose for themselves. Since 1928 Armstrong has been the intelligent choice of homeowners who expect more from their HVAC equipment. Built from highly durable materials that last, and incorporating state-of-the-art technology in the design concepts, Armstrong Air is a brand you can trust because you are trusting the ‘Professional’s choice.’

Armstrong Air ‘Pro Series’ of air conditioners and heat pumps put you in total control of your indoor air quality with premium equipment that delivers higher energy efficiency and healthier air.

Inside all Armstrong Air heat pumps and air conditioners is a superb approach to cooling called MHT Technology. This proprietary heat transfer system features a specially designed fan shroud that pulls air more evenly, over and throughout the coil surface. The coil tubing is rifled to enhance refrigerant flow and lanced coil fins increase the surface contact between metal and air. These three features combine to maximize heat transfer and efficiency.

Armstrong Air’s most advanced furnaces with Variable Speed Blowers and Multi-Stage Performance are designed to deliver the most features, the highest level of comfort and the greatest efficiency of any brand you can buy.

At the center of every Armstrong Air gas furnace is a marvel of comfort and durability - the Armstrong Air heat exchanger with ‘EHX Technology.’ Heat exchangers with EHX Technology are not welded to hold them together, they are crimped. This reduces fatigue from heat strain and improves durability. Also, they are specially shaped to improve airflow and heat transfer for added warmth.

Take a closer look at the design of Armstrong Air products and you will see this is a respected manufacturer of HVAC equipment that’s serious about the quality and performance of every piece of equipment it builds. Equipment that is designed to do more for you.


Actual Size

Filter Part No.

Cleaner Model No.

Other Info

Armstrong 20 x 25 x 5 (repl. filter)

19 5/8 x 24 3/8 x 4 3/4   Fits Armstrong models AE20A-1, AMC20A-1, and ABS20A-1  

View all our brands of whole house air filters.