Air Filtration Products
Class 1 Air is your single source company for air filtration products and services.
We work with a variety of industries to ensure that their people, products and environment are all protected from airborne contamination.
Pleated Air Filters
Pleated panel filters play an important role in helping improve indoor air quality but also extend the life of the final filters in your HVAC system.
Bag Filters
Air filters are the first line of defense to protect people, products and processes. Bag filters can remove contaminants including fumes smoke bacteria and other atomospheric impurities. Low pressure drop and low energy consumption bag and compact filters come in many efficiencies and sizes to fit your hvac system and satify your needs.
V-Style Filters
These high volume, low pressure drop filters will save energy and last longer in your system allowing for fewer change-outs, less labor, freight, disposal and energy costs.
HEPA/ULPA Filters
Sensitive manufactureing, like semiconductors and pharmacutecuals, require the consideration of filtering every particle size. Different processes require different levels of air cleaning. It is crucial to our business concept to help you meet your requirements and find solutions to all your manufacturing and cleanroom needs.
Box Style
Filters
Box Style filters are robust, high-efficiency air filters engineered for consistent performance in commercial and industrial HVAC systems. Designed with a rigid frame and deep pleats, these filters provide reliable filtration while maintaining structural integrity, even under high airflow and varying humidity conditions.
Carbon/Molecular Filters
Molecular filtration can remove odors, fumes and harmful vapors. Used for air intakes and havc systems for nuisance odors as well as hazardous applications. We can select the appropriate filter for your specific application.
Cleanroom Terminal Air Filters
Pharmaseal and related products have raised the standard in roomside replacement terminal air filtration. Recommended in biotech, life sciences, medical device, sterile compounding pharmacies and biopharma facilities providing the necessary filtering with customizable features, including capabilities to isolate the room during a filter replacement.
HEPA Filter Housing
Designed for modern air handling equipment, housing arrangement is very flexible for many configurations of air handling equipment. Sidelock or boltstyle retainers allow for filter installation guaranteeing a leak-free seal. Containment bag in bag out technology provides safety to the operator when filter replacement is necessary.
UV Germicidal Lighting
UV/C lighting is ideal to control growth in cooling coils and air ducts. Effective UV/C germicidal fixtures for healthcare, industrial, commercial, and residential applications, including hvac, hospital, pharmaceutical, laboratory, food and beverage manufacturing and processing, among others. Hospitals can avoid significant monetary waste by investing in proven UV/C technology that plays an important role in reducing hospital acquired infections.

Our Locations
We are a regional service provider
We have offices in Milwaukee, Madison, and Chicago to serve your needs across the midwest. Class 1 Air is your single source company for air filtration products and critical environment compliance testing. We proudly serve the upper Midwest. Our company is committed to leadership throughout Wisconsin and the Midwest in biological safety.
We primarily service the below states: