Can duct leaks cause poor airflow?

Yes! Duct leaks let conditioned air escape before reaching your rooms. Up to 30% of airflow can be lost to duct leaks in some homes.

Why do some vents have less airflow than others?

Distance from the blower, duct sizing, and damper settings all affect individual vent airflow. Balancing dampers can help equalize flow.

Can Wait

Poor Airflow from Vents

Weak or reduced air coming from your HVAC vents

Call (650) 396-3290 Book Service

Signs You Have This Problem

Weak air coming from vents

Some vents have no air at all

System runs but house doesn't heat/cool

Airflow decreased over time

Whistling sounds from vents

What Causes This Problem

Clogged air filter

Blocked or closed vents

Ductwork problems (leaks, disconnections, blockages)

Blower motor issues

Dirty evaporator or condenser coils

Damper problems in zoned systems

What You Can Check First

Before calling for service, try these simple troubleshooting steps:

Replace air filter

Ensure all vents are open and unblocked

Check accessible ductwork for obvious problems

Feel if blower is running when system is on

When to Call a Professional

If filter replacement doesn't improve airflow, ductwork or blower problems likely need professional attention.

Services That Can Help

HVAC Maintenance

Preventive maintenance to keep your HVAC running efficiently

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Air Duct Cleaning

Professional duct cleaning for better air quality

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Ductwork Services

Duct repair, replacement, and installation

Learn More