SDR Single-Duct VAV Terminal Units

Precise heating and cooling

A variable air volume (VAV) terminal heats and cools spaces by using varying airflow at a constant temperature. With a single-duct VAV, the air stays comfortable with little maintenance and easy installation.

  • AHRI 880 and ETL-certified and labeled to meet industry performance and safety standards
  • FlowStar™ air measuring probe reduces energy costs and noise while maintaining comfort in the zone
  • Piping packages with 2-way on/off, modulating, or proportional control valves, and fixed or adjustable PICV flow control devices.
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Product Overview

Our single-duct VAV terminals are designed for precise air delivery, compatible with a variety of HVAC systems, and operate very quietly. The SDR is equipped with a FlowStar™ sensor that ensures the air is kept at the right volume for maximum comfort.
Product Overview



ENVIRO-TEC VAV units maximize building air quality, comfort, and airflow with improved spacing and design flexibility.


Manage air volume efficiently with a VAV terminal unit that offers a range of configurations and heating control options.


Our VAV terminals deliver long-lasting performance through quiet, precise airflow to the occupied space.

Genuine Performance
Genuine Performance

ENVIRO-TEC VAV terminals offer genuine performance advantages through unique configurations, control options, and industry-leading sound data.


  • CFM: 100 to 8,000 CFM
  • An integrated VAV box with direct digital controls allows for a bundled offering with lower total installation costs.
  • Superior FlowStar air measuring probe provides for lower minimum cubic feet per minute (CFM) values, which reduces energy costs and noise while maintaining comfort in the zone.
  • 18 month Limited Warranty

Technical Resources

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