Ductwork Services That Fix Airflow
Duct leaks, crushed runs, and unbalanced returns waste 20-40% of the energy your system makes. HVACZILLA connects you with local ductwork pros for sealing, repairs, rebalancing, and airflow correction across every room.
What Ductwork Services Actually Covers
Duct leaks, crushed runs, and unbalanced returns waste 20-40% of the energy your system makes. HVACZILLA connects you with local ductwork pros for sealing, repairs, rebalancing, and airflow correction across every room.
Leak Sealing
Mastic and aeroseal repair for the 20-40% of conditioned air most systems leak into attics and crawlspaces.
Airflow Balancing
Room-by-room pressure balancing so the bedrooms actually get airflow and the return path isn't choking the system.
Full Replacement
When the ducts are the bottleneck, rebuilt trunk lines and runs solve more problems than a new furnace ever will.
What Ductwork Services Actually Cover
Ductwork is the most overlooked part of residential HVAC and often the cause of problems that look like equipment failures. A real ductwork service addresses the full system, not just the piece the homeowner pointed at.
Duct leakage sealing
Mastic at accessible joints, Aeroseal for buried runs. Target: <10% leakage of total airflow. Most homes start at 20–40%.
Airflow balancing
Room-by-room CFM measurement against design flow. Damper adjustments, grille replacement, supply/return correction.
Static pressure correction
High static pressure wrecks equipment. Fix with larger returns, straighter runs, proper filter racks, or a new blower map.
Flex replacement
Crushed, disconnected, or degraded flex ducts get replaced run-by-run. Metal trunks are more durable but flex has its place.
Return-path improvements
Single-return homes are airflow-starved. Transfer grilles, jumper ducts, or added returns often fix comfort complaints outright.
Duct insulation
Uninsulated ducts in unconditioned space bleed energy and cause condensation. R-6 or R-8 wrap depending on location.
Full redesign & replacement
Sometimes the ductwork is past fixing. A proper Manual-D redesign + replacement handles it.
Zoning & dampers
Adding motorized dampers with a zoning panel for per-area temperature control. Requires a good design to avoid static pressure problems.
Ventilation & IAQ additions
Fresh-air intakes, HRV/ERV installs, high-MERV filter rack retrofits — often done alongside duct work.
Why Duct Leakage Is the Silent Energy Killer
Every cubic foot of conditioned air that escapes into an attic or crawlspace is energy you paid to produce, thrown away. Standard residential ductwork loses 20–40% — a number most homeowners would never tolerate if they saw it on the utility bill line item.
What leakage does
What sealing fixes
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Explore Furnace Repair →Ductwork Services Questions
How do I know if my ducts are the problem?
Uneven room temperatures, dusty return air, whistling noise at registers, or a utility bill that climbs despite a newer AC — all classic duct-system symptoms.
How much does duct sealing cost?
Mastic and foil-tape sealing runs $500-$1,500 for an average home. Aeroseal (internal aerosolized sealant) typically runs $1,500-$3,500 and can cut leakage 80-90%.
Is Aeroseal worth it?
Yes, if your ducts are buried in walls, attics, or crawlspaces where manual sealing is impossible. It's a one-shot internal seal that cuts energy loss and improves airflow.
Do I need new ducts or just repairs?
Most homes benefit more from sealing and rebalancing than full replacement. If trunk lines are crushed, rusted, or undersized, replacement makes sense.
Can bad ductwork make a new AC underperform?
Absolutely. Leaky or undersized ducts can erase 20-40% of a new system's capacity. Always evaluate ductwork before or during an AC replacement.
Will sealing ducts help with allergies?
Yes — sealed return ducts pull less attic/crawlspace air, filter dust load drops, and indoor air quality improves. Pair with a quality filter for the biggest effect.
Need Ductwork Services Today?
Call HVACZILLA to describe your situation and get connected with a local pro in your city. No forms, no games — just a phone call.