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Makeup Air Units
for Iowa, Nebraska & Western Illinois

Reliable Fresh Air Solutions for Commercial & Industrial Buildings

Make-up air units replace air that has been exhausted from a building, helping maintain proper building pressure while supplying tempered outdoor air. They are essential in facilities with large exhaust systems, including commercial kitchens, manufacturing plants, warehouses, and industrial processes.

VHF Sales proudly represents Sterling HVAC, ICE Western, and Systemair, offering make-up air solutions for commercial and industrial applications throughout Iowa, Nebraska, Western Illinois, South Dakota, and Wisconsin.

Sterling
ICE Western
SystemAir

What Is a Make-Up Air Unit?

A make-up air unit (MAU) supplies outdoor air to replace air removed by exhaust fans. Depending on the application, the incoming air can be heated, cooled, filtered, or dehumidified before being delivered into the building.

Proper make-up air helps:

  • Maintain balanced building pressure

  • Improve occupant comfort

  • Support ventilation requirements

  • Prevent drafts and infiltration

  • Improve HVAC system performance

  • Protect equipment affected by negative building pressure

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Sterling HVAC

Sterling HVAC manufactures a complete line of indoor and rooftop make-up air units designed for commercial and industrial applications. Their systems are available with indirect-fired heating and optional cooling packages to meet a wide range of ventilation requirements.

Available Equipment

  • Indoor Make-Up Air Units

  • Rooftop Make-Up Air Units

  • Indirect-Fired Make-Up Air Systems

  • Separated Combustion Make-Up Air Units

Why Choose Sterling HVAC?

  • Indoor and outdoor configurations

  • Heating capacities from 100 to 1,200 MBH

  • Airflows from approximately 800 to 14,000 CFM

  • Factory-installed heating and cooling coil options

  • Evaporative cooling options

  • Multiple factory gas and air control packages

  • Heavy-duty corrosion-resistant cabinet construction

  • Dedicated control cabinet isolated from the airstream

ICE Western

ICE Western manufactures custom direct-fired and indirect-fired make-up air units with integrated packaged DX cooling for demanding commercial and industrial environments. Their systems are designed in a variety of configurations to meet project-specific requirements.

Available Equipment

  • Direct-Fired Make-Up Air Units

  • Indirect-Fired Make-Up Air Units

  • Integral Packaged DX Cooling

  • Custom Rooftop Make-Up Air Systems

Why Choose ICE Western?

  • Airflow capacities from 600 to 170,000 CFM (direct-fired models)

  • Indirect-fired units available with packaged DX cooling

  • Multiple equipment configurations for rooftop and indoor installations

  • Available with digital scroll compressors, electronic expansion valves, and variable-speed condenser fans on applicable cooling packages

  • Custom-engineered to project specifications

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Systemair

Systemair provides energy-efficient ventilation and air handling solutions that can be configured for dedicated outdoor air and make-up air applications. Their modular air handling platforms offer flexible configurations, integrated controls, and energy recovery options to support a wide variety of commercial projects.

Available Equipment

  • Modular Air Handling Units

  • Dedicated Outdoor Air Solutions

  • Ventilation Units for Fresh Air Applications

Why Choose Systemair?

  • Modular designs for project flexibility

  • Airflow capacities up to 65,000 CFM on Geniox units

  • Energy-efficient EC fan technology

  • Multiple heating, cooling, filtration, and energy recovery options

  • Factory-integrated controls available

© 2026 by VHF Sales, Inc. All Rights Reserved.

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