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.
What This Involves
A manual duct damper is a simple butterfly-style plate mounted inside a branch duct, adjustable by hand through an external lever or wingnut, that lets you throttle airflow to a specific room or zone without any electronic controls. Manual dampers are the most cost-effective way to give a duct system some room-by-room adjustability when a full zoning system with motorized dampers and a control panel is not justified for the home's layout or budget. They are most useful in homes where a handful of rooms consistently need less airflow than others, a downstairs living room that gets more sun exposure, for example, and adjusting the damper once, seasonally if needed, solves the imbalance without ongoing control complexity.
Installation requires accessing the branch duct at a point with enough straight run to mount the damper properly, typically at least 12 inches from any elbow or takeoff to avoid turbulence interfering with damper operation. We cut into the duct, install the damper assembly with a sheet metal collar matched to the duct diameter, seal the connection with mastic, and route the external adjustment lever to an accessible location, usually just below the attic insulation line or at a point reachable without needing to crawl deep into the attic every time an adjustment is needed. For flex duct branches, we typically install the damper in a short rigid metal sleeve section spliced into the flex run, since dampers do not mount reliably directly in flexible duct material.
This installation comes up frequently in Georgetown homes going through a broader balancing project, where measurement shows a specific room needs less airflow than its takeoff currently provides, and a permanent adjustable damper is more practical than trying to solve the imbalance through duct resizing. It is also common in additions or converted spaces where a new branch was added without an adjustment point, making future balancing impossible without cutting into the duct again. A single damper installation typically takes 30 to 60 minutes once the branch is accessed and runs 150 to 350 dollars depending on how many dampers are needed and how accessible the branch ducts are.
Frequently Asked Questions, Manual Duct Damper Installation
Uneven Comfort or High Energy Bills?
Ductwork problems are often the hidden cause. We diagnose and fix them.