Modular retrofit damper system

A modular damper system configured for installation in ductwork of a building, wherein the ductwork includes a duct that supplies conditioned air through a register boot to a register vent, the modular damper system comprising:

• a damper unit including:
• a damper frame;
• a damper blade operatively coupled to the damper frame and configured to be movable between a closed end position in which the damper blade is at least substantially coplanar with the damper frame and an open end position in which the damper blade is substantially perpendicular to the damper frame;
• a damper blade motor configured to rotate the damper blade, relative to the damper frame, between the closed end position and the open end position;
• a control module configured to be operably coupled to the damper unit and including a controller that regulates operation of the damper blade motor;
• and
• a power module configured to be operably coupled to the control module.

An HVAC control system for use in a building having forced air ducts providing conditioned air to a plurality of vents, each of the plurality of vents coupled to corresponding register boots disposed between the forced air ducts and the plurality of vents, the HVAC control system comprising:

• a damper unit including:
• a damper frame;
• a deployment strap mechanically coupled to the damper frame and configured to permit deployment of the damper frame within a forced air duct, upstream of a corresponding register boot;
• a damper blade disposed relative to the damper frame and configured to be movable between a closed end position and an open end position;
• a damper blade motor configured to rotate the damper blade, relative to the damper frame, between the closed end position and the open end position;
• a control module including a controller that regulates operation of the damper blade motor, the control module configured to be disposed within the corresponding register boot;
• and
• a power module configured to be operably coupled to the control module, the power module configured to be disposed within the corresponding register boot.