Honeywell Home – Constant Pressure Regulating Bypass Damper, 14″ Round

The Honeywell CPRD14 Bypass Damper is a 14-inch round static pressure relief damper designed for forced-air HVAC zoning systems. When one or more zone dampers close, airflow is redirected through the bypass duct to help relieve excess static pressure. This supports balanced airflow, quieter system operation, and consistent performance across the zoning system.

Honeywell CPRD14 Bypass Damper Features

The Honeywell CPRD14 Bypass Damper combines a round damper body with a calibrated spring-tension regulator. Its straightforward design makes installation and adjustment easier while eliminating the need for electrical wiring or external weights.

Key features include:

• Fast and straightforward installation and setup
• Calibrated spring regulator with no weights to adjust
• Installation in horizontal, vertical, or other appropriate orientations
• No electrical wiring required
• Round 14-inch diameter design
• Quick-connect regulator mounting
• Automatic static pressure relief
• Designed to support consistent system pressure
• Suitable for forced-air HVAC zoning applications

How the Honeywell CPRD14 Bypass Damper Works

In a zoned HVAC system, individual zone dampers open and close according to the demand from each thermostat. When several zones are closed, the available airflow is directed through fewer ducts. This can increase static pressure and may place additional stress on the blower, ductwork, and other system components.

The Honeywell CPRD14 Bypass Damper provides an alternate path for excess airflow. As static pressure increases, the calibrated regulator allows the bypass damper to open and redirect air through the bypass duct. When pressure decreases, the damper returns toward its normal position. This automatic response helps the zoning system adapt as zone damper positions and blower speeds change.

Product Specifications

• Brand: Honeywell Home
• Manufacturer: Resideo
• Model: CPRD14/U
• Product type: Constant-pressure regulating bypass damper
• Application: Forced-air HVAC zoning systems
• Damper type: Bypass
• Shape: Round
• Diameter: 14 inches
• Metric diameter: 356 mm
• Regulator: Calibrated spring-tension regulator
• Regulator mounting: Quick connect
• Electrical wiring: Not required
• Installation orientation: Multiple orientations

Always confirm the required bypass size and static pressure settings for the specific HVAC system before installation.

Installation and Application

The Honeywell CPRD14 Bypass Damper is intended for use between the supply and return sides of an appropriate forced-air zoning system. Proper sizing and adjustment are important for maintaining suitable airflow and preventing unnecessary recirculation.

The calibrated regulator should be configured according to the requirements of the HVAC equipment, duct system, blower, and zoning design. The correct setting may vary depending on available airflow, the number of zones, duct dimensions, and equipment specifications.

Installation should be completed by a qualified HVAC professional familiar with zoning systems and static pressure measurement. The technician should verify airflow and system pressure after installation and test the system under different zoning conditions.

Why Choose the Honeywell CPRD14?

The Honeywell CPRD14 Bypass Damper offers a practical solution for managing changing static pressure in a forced-air zoning system. Its mechanical operation eliminates the need for electrical connections, and its adjustable spring regulator simplifies system setup.

The 14-inch round design is suitable for applications requiring a larger bypass duct. Its ability to respond automatically to pressure changes helps the HVAC system manage airflow when different combinations of zones are open or closed.

For additional components, browse our HVAC installation supplies. For manufacturer specifications and technical documents, review the official Honeywell Home CPRD14 product information from Resideo.

Professional installation is recommended. Always verify equipment compatibility, local codes, manufacturer instructions, duct sizing, and static pressure requirements before purchasing or installing the product.