Very High Efficiency Dedicated Outside Air Systems

It’s rare for a solution to reduce costs and improve quality, but the very high efficiency dedicated outside air system (DOAS) does both by separating heating and cooling from the ventilation system. The DOAS can reduce commercial building energy use by an average of 36%, and saves roof space and ductwork, all while delivering 100% filtered outside air for maximum tenant comfort.

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Dedicated Outdoor Air Systems (DOAS) Bring in Fresh Air and Energy Savings

A dedicated outdoor air system (DOAS) uses separate equipment to condition all of the outdoor air brought into a building for ventilation. Then, either directly or in conjunction with local or central HVAC units, DOAS delivers the air to each occupied space. Space temperatures are maintained by the local or central HVAC units. This approach not only improves ventilation and humidity control and significantly reduces energy use, it also enhances indoor environmental quality by delivering 100% fresh air throughout the building.

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4 Reasons to Upgrade Your HVAC Using a Very High Efficiency DOAS Approach

Looking to upgrade your HVAC? Learn more about very high efficiency DOAS and what you should consider when planning your upgrade.

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Video: How to Boost the Efficiency of Your HVAC

Breathing New Life Into Buildings: John Jennings, Senior Product Manager at NEEA, explains how having a high-efficient HVAC system will result in tenant comfort, improved health, and productivity. The why of energy efficiency is easy, we’ll show you how.

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Innovative HVAC Approach Helps Airport's Energy Savings Take Off

Although a two-story, 1930s airport terminal building in Seattle underwent a major renovation in 2002, the HVAC was largely untouched. The duo of large, multizone rooftop units (RTUs) were left in place, with a third unit of the same type added during the renovations. This inefficient HVAC system wasted energy and money, led to inconsistent temperatures, and caused severe occupant discomfort.

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High-Performance HVAC Gets to Work for Utility Office

Flathead Electric’s district office is a single-story 1960s-vintage building with offices at the front and a combination of storage space and garage bays for utility trucks in the back. Their former HVAC system had been pieced together from several years of changes and modifications and it was no longer providing indoor comfort or an adequate level of heating efficiency. Flathead Electric took advantage of an innovative approach to HVAC they knew all to well—a very high efficiency dedicated outside air system (also referred to as very high efficiency DOAS).

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Portland Restaurant Cooks Up Comfort and Energy Savings

When faced with an an older HVAC system that was causing tenant discomfort, Portland-based restaurant Verde Cocina turned to an innovative HVAC approach that would reduce their energy costs while improving their customer experience.

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Trapper Creek Dorm Snares Energy Savings for Good

The Trapper Creek Dormitory is a federal government work campus in rural Montana. When restricted airflow caused summertime overheating, ventilation issues, and unsafe C02 levels in their dormitories, the facility managers decided to partner with Ravalli Electric Co-op and Bonneville Power Administration to implement a high-performance HVAC conversion.

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