Dedicated Outdoor Air Systems (DOAS)
Bolster Energy Efficiency via Innovative Addison, Petra and RenewAire DOAS Units
DOAS Boosts Energy Efficiency
Commercial buildings require outside air whenever a space is occupied to meet ventilation standards and maintain indoor air quality. Incoming ventilation and make-up air typically account for more than 80% of a building’s dehumidification load. Hence, decoupling outdoor air demand and interior load demand via Dedicated Outdoor Air Systems (DOAS) allows systems to operate independently to optimize operational efficiency.
Benefits of DOAS for All Building Types
There are many reasons to use DOAS. Some of the most common drivers are:
- Improved humidity control
- Ability to use heating and cooling systems that don’t provide ventilation and/or dehumidification (e.g., radiant panels, chilled beams, VRF)
- Reduced installation costs
- Decreased energy consumption
- Simplified ventilation design and control
ADDISON DOAS PRODUCTS
Founded in 1949, Addison continues to lead the industry in product development with over eight generations of DOAS products. From their highly configurable PR Series, modular split MA/MC series and the compact AK Series, Addison offers ultimate performance configured for customer applications.
The Addison name has become synonymous with innovative design, quality manufacturing and dependable service. That’s their heritage at Addison Products Company. It’s what they call “The Addison Advantage.”
The Addison AK Series delivers exceptional performance and versatility over its standard 10-90 ton range. Featuring a compact footprint with either vertical or horizontal discharge, it’s a perfect match for every application requiring dedicated outdoor air. Additionally, the footprint matches many legacy Addison products and, as an added advantage, is smaller than many competitor footprints. From Retail, Offices, Hospitality and more, the AK Series is perfect fit for your next project.
Standard and optional features:
- Capacity from 10 – 90 Tons
- Airflow from 2,500 – 19,000 CFM
- Hinged, Double-Walled Access Doors
- 6-Row Intertwined Air Coils
- Modulating Reheat Circuit
- Switchable SubCooling Circuit
- Scroll Compressors (Optional Lead VFD)
- All-Digital Controls with BAS Integration
- Direct Drive EC Plenum Supply Blowers
- Modulating Electric or Gas Heat
- 2500 Hour Salt-Spray Rated Cabinet
- MicroChannel Condenser Coils
- Up to 6” of Media Filtration
- Multiple Service Access Points
- Reduced Cabinet Weight
- Compact Footprint
- Optional 10,000 Hour Corrosion Protection
- 2” Foam-Injected Double-Wall Construction (R-13)
The Addison PR Series delivers exceptional performance and versatility over its standard 3 – 140 Ton range. Featuring the widest range of size and option combinations available today, it’s a perfect match for every application requiring dedicated outdoor air, mixed air and dehumidification. From Retail, Offices, Hospitality and more, the PR Series is perfect fit for your next project.
Standard and optional features:
- Capacity from 3 – 140 Tons
- Airflow from 500 – 22,000 CFM
- Hinged, Double-Walled Access Doors
- 6-Row Intertwined Air Coils
- Scroll Compressors (Optional Lead VFD)
- All-Digital Controls with BAS Integration
- Direct Drive Plenum Supply Blowers
- Staged or Modulating Electric or Gas Heat
- 2500 Hour Salt-Spray Rated Cabinet
- MicroChannel Condenser Coils
- Up to 6” of Media Filtration
- Multiple Service Access Points
- Optional 10,000 Hour Corrosion Protection
- Optional Modulating Reheat Circuit
- Optional Switchable SubCooling Circuit
- Optional Exhaust with Energy Wheel
- 2” Double-Wall Foam Insulated Construction (R-13)
The Addison LC Series delivers industry-leading performance and versatility over its 10 – 45 Ton range. Utilizing their patented Active Coil Exposure® technology, the LC Series can modulate between 20%-100% of rated CFM without compromising moisture removal performance. The active coil array, matched with the latest in variable speed compressors, delivers industry-leading EER, MRE and ISMRE. The LC Series shines in applications where demand controlled ventilation is desirable, and is a snap to setup and control. From Retail, Offices, Hospitality and more, the new LC Series is perfect fit for your next project.
Standard and optional features:
- Capacity from 10 – 45 Tons
- Nominal Airflow from 1,500 – 6,800 CFM
- 2” Double-Wall Foam Insulated Construction (R-13)
- Hinged, Double-Walled Access Doors
- 6-Row Intertwined Air Coils
- Active Coil Exposure System
- Switchable SubCooling Circuit
- Variable Speed Scroll Compressors
- All-Digital Controls with BAS Integration
- Direct Drive EC Plenum Supply Blowers
- Direct Drive EC Condenser Fans
- Modulating Electric or Gas Heat
- 2500 Hour Salt-Spray Rated Cabinet
- MicroChannel Condenser Coils
- Up to 6” of Media Filtration
- Multiple Service Access Points
- Stainless Steel Condensate Drain Pans
- Optional 10,000 Hour Corrosion Protection
The Addison MC\MA Series delivers exceptional performance and versatility over its standard 3.5 – 80 Ton range. Featuring a modular design, the MA air handler can be field converted to either vertical or horizontal discharge. It’s a perfect match for every application requiring split systems for ventilation or dehumidification. Additionally, the modular design allows it to be installed in exceptionally tight spaces. From Retail, Offices, Hospitality and more, the new MC\MA Series is a perfect fit for your next project.
Standard and optional features:
- Capacity from 3.5 – 80 Tons
- Optional Heat Pump Operation
- Airflow from 500 – 15,000 CFM (Outdoor Air)
- Hinged, Double-Walled Access Doors
- 6-Row Intertwined Air Coils
- Modulating Reheat Circuit
- Switchable SubCooling Circuit
- Scroll Compressors (Optional Lead VFD)
- All-Digital Controls with BAS Integration
- Direct Drive EC Plenum Supply Blowers
- Aluminum and Galvanized Steel Cabinet
- MicroChannel Condenser Coils
- Direct Drive EC Condenser Fans
- Multiple Service Access Points
- Optional 10,000 Hour Corrosion Protection
- Dedicated Outdoor Air or Recirculating Comfort Cooling Operation
- 2” Double-Wall Foam Insulated Construction (R-13)
The Addison MI Series delivers exceptional performance and versatility over its standard 10 – 45 Ton range. Featuring a compact design, the MI can be installed into confined spaces. It’s a perfect match for every application requiring split systems for ventilation or dehumidification. Additionally, its versatile range of options – from remote condenser air source or water cooled operation – make it the best option for any installation. From Retail, Offices, Hospitality and more, the new MI Series is a perfect fit for your next project.
Standard and optional features:
- Capacity from 10 – 45 Tons
- Paired with MC Series Condenser Units
- Optional Water-Source Heat Pump Operation
- Airflow from 1,500 – 7,000 CFM Outdoor Air
- 6-Row Intertwined Air Coils
- Modulating Reheat Circuit
- Switchable SubCooling Circuit
- Scroll Compressors (Optional Lead VFD)
- All-Digital Controls with BAS Integration
- Direct Drive EC Plenum Supply Blowers
- Aluminum and Galvanized Steel Cabinet
- Multiple Service Access Points
- Dedicated Outdoor Air or Recirculating Dehumidification Operation
- Hinged, Removable Double-Walled Access Doors
- 2” Double-Wall Foam Insulated Construction (R-13)
- Optional 10,000 Hour Corrosion Protection
Petra was founded in 1987 with a broad vision to produce a wide variety of HVAC equipment for the global market. By 1994, Petra expanded its line of HVAC equipment utilizing some of the industries most advanced machinery, components and raw materials to achieve the highest quality and efficiency standards.
Petra offers a wide range of products, such as DOAS Units, Custom & Semicustom AHUs, Energy Recovery Units, Custom Chillers, CRAH/CRAC Units and more. Consequently, Petra established itself as a trusted manufacturer with an impressive list of clients worldwide, including within the U.S.
Standard features:
- 3,000 to 20,000 CFM
- Dedicated outdoor air
- Delivers neutral air to space for ventilation year-round
- Cooling efficiency up to 19 EER
- Heating efficiency up to 6.5 COP
- Outdoor or indoor installation
- Integrated microprocessor controller for stand-alone or BMS operation
- Capacities ranging from 7.5-50 tons
- Refrigeration cycle changes direction depending on heating or cooling mode
- Able to accommodate unbalanced airflows
RenewAire has been a pioneer in Energy Recovery Ventilation technologies for over 35 years. Their Energy Recovery Ventilators (ERVs) improve people’s health, cognitive function, productivity and wellbeing by enhancing indoor air quality (IAQ) in homes and buildings of every type. This is done energy-efficiently, cost-effectively and sustainably via fifth-generation, static-plate, enthalpy-core ERVs and Dedicated Outdoor Air Systems (DOAS) that reuse otherwise-wasted energy to condition incoming outdoor air.
- Available in 500 to 4,250 CFM
- Enhanced indoor air quality (IAQ)
- High sensible and latent energy recovery
- Internal enthalpy-based bypass for 100% outdoor air (OA) economizer operation
- 0% cross-contamination from exhaust airstream
- No freezing concerns for the energy recovery core
Available options:
- Indoor or outdoor construction
- 1” or 2” double-wall panel construction
- Factory-mounted controls
- Cooling options: split DX, chilled water, heat pump
- Heating options: electric with SCR control, gas-fired with electronic modulation, hot water, steam and heat pump
- Hot gas reheat
- 2” or 4” MERV 8, 13 or 14 pleated media filters
- Split DOAS units with static-plate, total energy recovery
- 375-4,950 CFM
- Single-point connection, direct-drive EC fans, injected foam panels
- Modular design
- Split DOAS units with static-plate, total energy recovery
- Integrated refrigeration
- 375-4,950 CFM
- Brushless DC compressors
- EC motors on all fans
- Modular design
- Commercial DOAS units with static-plate, total energy recovery
- Bypass
- Optional coils
- 500-4,250 CFM
Let’s create a more sustainable world.
Our team partners with engineers, contractors, owners and operators across all commercial and high-rise residential building types. We customize our building efficiency technologies for every job to meet the specific needs of the most demanding structures.
