iO HVAC Controls MD Series Round 3-Wire Zone Damper

The iO HVAC Controls MD Series round zone damper delivers precise, energy-efficient airflow control for modern multi-zone heating and cooling systems. Engineered for residential and light-commercial HVAC zoning, it sends conditioned air exactly where it's needed for true room-by-room comfort — eliminating the hot and cold spots that waste energy and raise utility bills.

Why Choose the MD Series

• Precise zoning control — sends conditioned air exactly where it's needed for even, comfortable temperatures.
• Built to last — durable galvanized-steel housing for quiet, dependable performance season after season.
• Easy, proven install — straightforward wiring with direct iO zone-panel compatibility.

Specifications

• Actuator Type: Modulating
• Actuator Voltage: 24V
• Wiring: 3-Wire
• Max Static Pressure: 1.0" WC
• Blade Design: Single-Blade
• Compatible Panels: ESP-400, ESP, Saturn UCC

Ideal For

Residential and light-commercial HVAC zoning systems that demand precise, energy-efficient airflow and even temperatures in every room.