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Dedicated Outdoor Air Systems
for Iowa, Nebraska & Western Illinois

High-Performance Ventilation for Healthier, More Efficient Buildings

Modern commercial buildings require more than heating and cooling. They need a reliable source of fresh outdoor air to maintain indoor air quality, control humidity, and meet today's ventilation standards. A Dedicated Outdoor Air System (DOAS) provides conditioned outdoor air independently from the primary HVAC system, improving comfort, reducing energy consumption, and helping buildings operate more efficiently.

VHF Sales proudly represents NexGen Dedicated Outdoor Air Systems, delivering energy-efficient ventilation solutions for commercial and industrial facilities throughout Iowa, Nebraska, Western Illinois, South Dakota, and Wisconsin.

NexGen DOAS

What Is a DOAS?

A Dedicated Outdoor Air System is designed to condition and deliver 100% outdoor air to a building while handling the ventilation load separately from the heating and cooling system.

By treating ventilation independently, the primary HVAC equipment can focus on maintaining space temperature, resulting in improved efficiency, better humidity control, and enhanced indoor air quality.

Separating ventilation from space conditioning offers significant advantages over traditional HVAC designs.

Benefits Include:

  • Improved indoor air quality (IAQ)

  • Better humidity control

  • Reduced energy consumption

  • Lower operating costs

  • Increased occupant comfort

  • Smaller loads on primary HVAC equipment

  • Supports modern ventilation standards

  • Easy integration with building automation systems (BAS)

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NexGen DOAS

NexGen manufactures high-performance DOAS units engineered to deliver reliable ventilation while maximizing energy efficiency. Their systems are designed for flexibility, allowing engineers to configure equipment for a wide variety of commercial applications.

Available Configurations

  • 100% Outdoor Air Systems

  • Energy Recovery Ventilation

  • Heat Recovery Options

  • Electric Heating

  • Hot Water Heating

  • Steam Heating

  • Gas Heating

  • DX Cooling

  • Chilled Water Cooling

  • Heat Pump Configurations

Every unit is built to meet the specific needs of the project, ensuring optimal performance and long-term reliability.​

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