For more than 40 years, our HEE-Duall brand has been a leading global supplier of custom-designed systems and solutions for the collection, handling, ventilation and control of corrosive air streams, including corrosive gases, mists, vapors and particulates.

We provide innovative solutions and a diverse line of products and technologies for the purification of air, and the destruction of volatile organic compounds (VOCs), hazardous air pollutants (HAPs), water contaminates, and process odors in both industrial and municipal applications.

Our major products scrubbers, mist eliminators, aeration towers and degasifiers, and corrosion resistant duct, exhaust fans, and hoods. We offer the expertise, customer service, and proven technologies to meet a wide variety of unique air pollution control and handling requirements. 

Primary Products and Solutions

Scrubbers:

• Eductor Venturi Scrubbers
• Hydro-Lance Wet Particulate Scrubbers
• Fume and Gas Wet Scrubbers
• High-Efficiency Dry Scrubber
• NOx Control Wet Scrubbers
• Packed Bed Scrubbers for Municipal and Industrial Odor Control
• Quencher Scrubber
• Wet Packed Bed Scrubber System, Horizontal
• Wet Packed Bed Scrubber System, Vertical

Exhaust Fans:

• Centrifugal Exhaust Fans
• Inline Centrifugal Exhaust Fans
• Radial Exhaust Fans
• Tubeaxial & Vaneaxial Exhaust Fans

Other Products and Solutions:

• Aerators & Degasifiers
• Air Stripper Tower Systems
• Bio-Reaction Biogas Oxidizers
• Duct, Hoods and Stacks
• FRP Storage Tanks
• Mist Eliminator Model HPE