Aprilaire 6997 Replacement Actuator 18 Inch 20 Inch Round Normally Open

Product Description

The Aprilaire 6997 is a replacement actuator designed for use with 18-inch and 20-inch round zone dampers in HVAC zoning systems. This actuator is normally open, meaning the damper stays open when the actuator is not receiving power. When power is applied, the actuator closes the damper to redirect or restrict airflow as directed by the zone controller. This fail-safe design helps protect conditioned spaces from total airflow loss during a power interruption. HVAC technicians rely on normally open actuators in multi-zone residential and light commercial systems where consistent baseline airflow is a priority. The Aprilaire 6997 is built as a direct replacement component, making it a reliable choice for service calls and system maintenance. Installing a fresh actuator restores precise damper control and helps the zoning system operate at full efficiency. Round dampers in the 18-inch and 20-inch size range are common in larger duct runs and trunk lines, and a properly functioning actuator is critical for accurate zone-by-zone temperature management. This actuator fits within the Aprilaire zoning product family, which is widely used by HVAC contractors across the country. The black finish and durable construction are consistent with Aprilaire quality standards. Whether you are replacing a failed actuator on an existing system or performing a preventive maintenance upgrade, the 6997 provides a straightforward, OEM-compatible solution. Keeping replacement actuators on the service truck reduces downtime and helps technicians complete jobs in a single visit. The normally open configuration is clearly identified, making it easy to match to the correct application during troubleshooting.

• Normally open actuator keeps damper open when unpowered, closing only when power is applied
• Compatible with 18-inch and 20-inch round HVAC zone dampers
• Direct replacement component for Aprilaire zoning systems, simplifying service and repair

Product Highlights

The Aprilaire 6997 replacement actuator restores accurate damper control in 18-inch and 20-inch round zoning applications. Its normally open design provides a reliable fail-safe for multi-zone HVAC systems.

Product Information

Standard Information

• Brand: APRILAIRE
• Manufacturer Part Number: 6997

Technical Specifications

• Color: Black
• Compatible Damper Size: 18 inches and 20 inches round
• Actuator Type: Normally Open
• Product Category: HVAC Zoning Controls
• UPC: 68672000348