Multi-Story Demand-Controlled Ventilation (DCV) Systems
Intelligent multi-zone DCV for shared vertical risers handling kitchen, bath, and dryer exhaust in residential and commercial towers.

Overview
Intelligent, multi-zone demand-controlled ventilation platforms engineered to regulate shared vertical exhaust risers in multi-story residential and commercial buildings. Designed to handle mixed-use source points including commercial / residential kitchen hoods, continuous bathroom exhaust, and clothes dryer connections across multiple floors. Localized pressure, air-quality, or current-sensing logic monitors real-time demand. By replacing outdated single-speed 24/7 exhaust fans with dynamic modulation, the system automatically drops to an ultra-low code-compliant standby speed when source zones are idle, slashing fan electrical consumption and eliminating continuous loss of conditioned building air.
Listings · ASHRAE 90.1 · Title 24
Specification Highlights
What this system delivers.
- +01
Vertical Riser Pressure Stabilization
Maintains balanced static pressure across complex multi-story shafts to prevent cross-contamination and backdrafts.
- +02
Mixed-Source Exhaust Integration
Simultaneously manages bathroom, lint-laden, and high-temperature appliance discharge.
- +03
Dual-Fold Thermal & Electrical Savings
Cuts motor energy and conditioned-air loss during off-peak hours.
- +04
Proportional Speed Modulation
Closed-loop digital controls scale from design loads down to fractional standby ventilation rates.
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