Ductwork & Airflow Services, Georgetown TX
Duct Repair & Construction
Repair disconnected, damaged, or collapsed duct sections. Restore airflow to rooms losing conditioned air.
Professional duct sealing with mastic or foil tape, eliminate air leaks that waste conditioned air in attic and crawlspace.
New duct system design and installation for additions, renovations, or full system replacement.
Custom fabrication of sheet metal trunk lines, branches, and fittings for high-performance duct systems.
Splice and reconnect flex duct sections, replace damaged sections, and correct improper flex duct installations.
Custom supply plenum fabrication for equipment replacements where the new unit requires a different plenum configuration.
Repair leaking or damaged return air plenums that allow unconditioned attic air to enter the system.
Applied mastic sealing for all duct joints and connections, the most durable sealing method for Georgetown's attic conditions.
Seal duct boots at registers where leakage directly into walls or ceilings causes significant energy loss.
Airflow Balancing
Measure and balance air distribution across all supply and return vents for even comfort throughout the home.
Comprehensive whole-house airflow evaluation and adjustment, dampers, registers, and duct sizing evaluated.
Balance airflow to specific problem rooms that receive too much or too little conditioned air.
Adjust zone dampers and control settings for homes with zoning systems to improve comfort and efficiency.
Full optimization of multi-zone airflow systems, control logic, damper travel, and zone sizing.
Optimize how conditioned air is distributed throughout the duct system for efficiency and comfort.
Improve overall air movement in the home through duct, register, and equipment adjustments.
Undersized return air is the most overlooked duct problem, we measure and correct return air flow.
Expand or add return air drops to improve system static pressure and airflow in homes with insufficient return capacity.
Dampers & Registers
Install manual balancing dampers in branch ducts to control airflow to specific zones or rooms.
Repair or replace motorized zone dampers that are stuck open, stuck closed, or not responding to controls.
Replace damaged, rusted, or improperly sized floor registers and diffusers.
Replace ceiling supply and return grilles with correct sizing and airflow direction for your room layout.
Install transfer grilles to improve pressure equalization and airflow between rooms with closed doors.
Install jump ducts above doorways or through walls to allow air pressure equalization between zones.
Redirect or baffle supply vents that blow directly on occupants or create drafty areas.
Measure and calibrate airflow from each vent against design specifications.
Ventilation & Testing
Repair ERVs, HRVs, exhaust fans, and dedicated ventilation systems.
Improve fresh air exchange and indoor air quality through targeted ventilation upgrades.
Measure system static pressure to identify duct restrictions causing equipment stress and efficiency loss.
Isolate duct sections from structure to eliminate vibration noise that transmits through walls and ceilings.
Install internal duct lining to absorb noise from high-velocity air movement in ducts near occupied spaces.
Duct Insulation & Protection
Install or replace duct insulation in Georgetown attics where heat gain from uninsulated ducts wastes significant energy.
Install vapor barriers to prevent condensation on cold supply ducts in Georgetown's humid summers.
Support or repair duct systems during crawlspace encapsulation projects.
Repair small-diameter high-velocity duct systems found in older homes and historic properties.
Diagnosing Stuck or Unresponsive Zone Dampers
Motorized zone dampers are electrically actuated valves inside the ductwork, controlled by a zone panel that opens or closes them based on which thermostats are calling for heating or cooling. When a damper fails, it typically gets stuck in one position, either fully open, fully closed, or partway, and the symptoms depend on which failure mode occurred. A damper stuck closed leaves that zone with no airflow at all even though the zone panel shows it should be calling, while a damper stuck open means that zone receives airflow constantly regardless of whether it is calling, which can overcool or overheat that area and rob pressure from other zones that are actually calling for conditioning.
Diagnosis starts at the zone panel, checking whether it is sending the correct signal to the damper actuator for the current call. If the signal is correct but the damper does not respond, the actuator motor itself has typically failed, which is the most common failure point since these motors cycle open and closed thousands of times over a system's life and eventually wear out. We also check for mechanical binding, where debris, a bent duct section, or a damper blade that has come loose from its shaft prevents smooth movement even when the actuator itself still functions. A multimeter check at the actuator terminals during a call cycle quickly tells us whether the problem is electrical, in the actuator motor, or mechanical, in the damper assembly itself.
Repair typically means replacing the actuator motor, which mounts externally to the damper housing and can usually be swapped without removing the duct section itself, restoring proper function without needing to access the ductwork's interior. In cases where the damper blade or shaft has failed mechanically, the damper assembly itself needs replacement, which requires cutting into the duct similarly to a new installation. We test the repaired zone through a full call cycle from the thermostat before finishing, confirming the damper opens and closes correctly and that airflow at the registers in that zone matches expectations. Motorized damper repair typically runs 200 to 450 dollars for an actuator replacement and more for a full damper assembly replacement.
Frequently Asked Questions, Motorized Zone Damper Repair
Uneven Comfort or High Energy Bills?
Ductwork problems are often the hidden cause. We diagnose and fix them.