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75F has reinvented economizer HVAC to improve the occupant experience and increase operational efficiency. Equipped with cloud computing data storage and processing power, Outside Air Optimization™ (OAO) is much more efficient than the standard economizer controller found in existing units, such as rooftop units (RTUs), make-up air (MUA) systems and dedicated outside air systems (DOAS). Retrofit your economizers with Outside Air Optimization™ demand controlled ventilation and save up to 50% on your utility costs and receive an install payback in as little as one year! 

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Key Benefits of Outside Air Optimization

Energy Savings with Outside Air Optimization

 Energy Savings

Save up to 50% on utility costs by optimizing the amount of outside air allowed into HVAC package units while maintaining high comfort standards.

Fast Payback with Outside Air Optimization

Fast Payback

Energy savings and utility rebates typically pay back the cost of installation in one year. Simple, wireless installation can be done with little disruption.

Comfort with Outside Air Optimization


Cutting edge technology optimizes outside air to achieve an ideal level of Indoor Air Quality (IAQ) and mixed air temperatures, allowing for maximum occupant comfort.


Hover over an element to explore how Outside Air Optimization works

Outside Air Optimization™ Product Features

Our Outside Air Optimization™ system is not only compatible with most units and actuators, home-run wiring and enthalpy modules are not even necessary. The default settings also work with most units for simple installation and includes:
Predictive analytics for improved comfort and efficiency
Online data portal with remote access to system performance
• Enclosure mounts for the RTU, DOAS, or MUA System
• Demand Controlled Ventilation (DCV) and Enthalpy Economizer functions
Optional actuator adder, differential pressure sensors and CO and NO2 gas detectors are also available. 

Looking for specs? Download our Outside Air Optimization™ Spec Sheet!

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Watch the video to learn more

Watch our explainer video and discover how our Outside Air Optimization™ solution can be installed in nearly any building and improves the occupant experience and increases operational efficiency!




Demand Controlled Ventilation (DCV)

DCV optimizes the outside air damper position based on Indoor Air Quality needs and CO2 levels in the return air system. Outside air is then admitted to improve the IAQ and save energy, thus reducing utility costs. DCV also improves fan efficiency via interval modulation for step speed drives and Variable Frequency Drives (VFD). 

Outside Air Optimization™ can also be used to add DCV and IAQ features to makeup air units (MAUs), air handling units (AHUs) and dedicated outdoor air systems (DOAS), although OAO does not control these systems directly.

Demand Controlled Ventillation
Comparative Enthalpy Economy and HVAC Control

Comparative Enthalpy HVAC Control

Comparative Enthalpy HVAC control optimizes the outside air damper position based on outside air enthalpy compared with calculated indoor enthalpy. Cloud computing maximizes free cooling by predicting needs via live weather data and doppler radar instead of failure-prone hardware on the roof. 75F does not modulate to a fixed Mixed Air Temperature (MAT) such as 55º, but instead calculates the ideal MAT based on the real load of the indoor zones. This strategy significantly improves comfort by optimizing diffuser discharge air temperatures and reducing room temperature by zone.



Remote Management & Control

Increase efficiency with the ability to manage your entire system from our suite of web and mobile apps, 75F® Facilisight®. Not only can you make scheduling changes remotely, you can manage the scheduling of hundreds of buildings and monitor them on a single pane of glass wherever you are!


Learn More About Facilisight

Download the Outside Air Optimization Spec Sheet


Download the Outside Air

Optimization Spec Sheet

The spec sheet outlines:

  • Product overviews on all of the OAO package components
  • Product dimensions and specifications
  • A sample equipment line drawing
  • And more!


Download Now

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