The HEPA Filter Sales Knowledge Center contains product manuals as well as white papers on a wide variety of subjects related to indoor air and water quality. Most documents are available in pdf files. Choose your manufacturer below to locate your Air Cleaner or Humidifier’s Owner’s Manual for media replacement instructions and other important maintenance tips. We hope that the information provided will assist you in learning how to improve your homes environment for you and your family.
A Summary of UL 900 for HVAC Air Filters
The UL 900 requirements classify smoke and flammability standards for both washable and throwaway air filters used for removal of dust and other airborne particles from air circulated mechanically in HVAC equipment.
Guide to Air Cleaners in the Home
This white paper provides information on different types of air cleaning devices and how they work. There are a lot of different types of air cleaners; this document provides information to help you decide what type of air cleaner to purchase for your specific situation.
How big is a Micron?
This white paper illustrates the size of a 1 Micron particle in comparison to a human hair. It also contains a chart that shows the sizes of common particles found in indoor air and shows which air filter MERV ratings are effective against which types of particles.
How often do I need to wash EAC cells?
This white paper provides information on how often you should wash your electronic air cleaner cells. It also explains the efficiency difference between electronic air cleaners and standard media air cleaners.
Indoor Air Quality Information by State
This white paper provides links to offices or programs identified by each state as dealing with indoor air-related health inquiries. Some of these links may be to general air quality programs and others are actual state agencies.
Should You Have the Air Ducts In Your Home Cleaned?
This white paper provides a lot of information about all aspects of getting your homes air ducts cleaned. The document is to the point and clearly provides relevant information to help the home owner understand the duct cleaning process. It even gives advice on how to choose a contractor and has a checklist to help you ensure that your contractor completed the cleaning properly.
What is White Dust?
This white paper talks about White Dust and describes how particles of different sizes in the air affect surfaces in your home.
What does a MERV Rating mean to me?
This white paper explains what the acronym MERV and it ratings mean in easy to understand terms. It helps you better understand why you would choose one MERV rating over another. It gives you the information you need to make a more informed decision when deciding the right balance of cost and performance for your buildings environment.