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  3. Dedicated Outdoor Air Systems (DOAS)
  4. Dedicated Outdoor Air Systems (DOAS)

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DOAS Systems

DOAS, or Dedicated Outdoor Air Systems, exist for the purpose of conditioning code ventilation prior to delivery into commercial buildings. DOAS are primarily selected for their ability to remove moisture from the outdoor air and secondarily for their ability to heat and cool that air. Desert Aire's DOAS solutions help overcome the moisture load challenges posed by outdoor ventilation air more effectively than others. Our superior refrigeration designs allow us to provide the desired humidity level and temperature regardless of the current conditions of the great outdoors. Hot and humid, cool and rainy our units don’t care….we provide the desired output that you are expecting from a DOAS. Design day conditions and part load days...no excuses.

Why DOAS?

Several HVAC trade and professional organizations, including ASHRAE, have documented the need for suitable indoor air quality (IAQ). A primary requirement for maintaining proper indoor air quality (IAQ) is through the introduction of outdoor air. In fact, ASHRAE 62.1 establishes the code ventilation rates for commercial buildings. The down side of adding outdoor air to your building is that it may increase the moisture content in the facility. If this added moisture is not controlled, it can create an environment for mold, mildew, viruses and other potentially hazardous organisms to flourish. The key to preventing mold formation and growth is to control the moisture content within the building. A standard air conditioner may be inadequate at handling this added moisture content as air conditioners are developed with temperature change in mind. Yes, an air conditioner does remove some humidity from the air but most units are operating based on temperature control only and are not designed for efficient moisture removal. Instead, a system must be implemented that can provide full control of both temperature and humidity.

The most energy efficient method to remove moisture is through the use of a dedicated outdoor air system (DOAS) that lowers the dew point temperature of supply air to below 55°F (Note: dewpoint is a measurement of absolute moisture in the air). Delivering this dry air also helps absorb existing moisture inside a facility that may come from people, infiltration, or other factors. Desert Aire DOAS options allow you to design the highest energy saving solution for your compliance to ASHRAE 62.1 code ventilation requirements for new construction and renovation projects. These design options let you custom tailor a DOAS solution to fit your facility’s needs, including:

  • Brute force or Energy Recovery of exhaust air
  • Control Strategies to provide better energy efficiency
  • Choice of Condensers
    • Air cooled
    • Water cooled
    • Water Source Heat Pump including Geothermal
  • Heating options include:
    • Gas heaters
    • Electric resistance
    • Hot water or Steam Coils
    • Heat Pump Mode on Water Source Heat Pump models

Check out our product offerings below! Desert Aire DOAS for design day and part load days...no excuses.

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Related Products

Desert Aire Aura Dedicated Outdoor Air System
Details

Aura™ Series

Aura™ Series DOAS systems give you the flexibility to design energy saving solutions for meeting IAQ codes during both full and part-load conditions.

View Details
Details

TotalAire™ Series

TotalAire™ Series DOAS systems offer our widest range of performance options including energy recovery wheels and secondary condensers for integration with any building type or location.

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VerticalAire™ Series

VerticalAire™ Series DOAS systems address all critical IAQ issues for those projects and buildings with limited available footprints and tight mechanical rooms.

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Related Case Studies

Related Testimonials

Dehumidifier Location

  • Indoor (2) Apply Indoor filter
  • Outdoor on Roof (2) Apply Outdoor on Roof filter
  • Outdoor (1) Apply Outdoor filter

Does the mechanical room have floor space limitations that require a vertical unit orientation?

  • No (2) Apply No filter
  • Yes (1) Apply Yes filter

Type of Auxillary Heat

  • By Others (3) Apply By Others filter
  • Electric (3) Apply Electric filter
  • Geothermal or Water Source (3) Apply Geothermal or Water Source filter
  • Gas (2) Apply Gas filter
  • Hot Water (2) Apply Hot Water filter
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