Check vents and the filter
Make sure vents are open and unblocked and the filter is clean.
Rooms not getting air, or a duct damaged or disconnected?
Damaged, crushed or disconnected ducts dump heated or cooled air into the attic or crawl space, leaving rooms hot or cold. Call 833-877-1717. RepairNowUSA connects the request. An independent HVAC technician does the repair.
Am I in the right place?Yes for weak airflow to some rooms, a disconnected or torn duct, rattling, or dust and debris blowing from vents.
Is this urgent?More urgent when the system cannot keep the building safe in extreme heat or cold, or water is getting into ducts.
What do I do next?Call 833-877-1717 with the ZIP code and which rooms are affected.
No air from any vent: blower motor. Mold in ducts: mold remediation.
RepairNowUSA editorial review · Last substantively reviewed October 14, 2026 · Review standards
Check first
Listen and feel
Whistling, rattling or warm air in the attic or crawl space can point to a leak or disconnected duct.
Stay safe in attics and crawl spaces
Step only on framing, watch for wiring and nails, and avoid crawl spaces with standing water.
Attics and crawl spaces
Do not crawl through attics or crawl spaces to inspect ducts unless you can do it safely. Step only on framing, and watch for wiring and insulation.
Common duct problems
Disconnected duct
A duct that has fallen off dumps conditioned air into the attic or crawl space, leaving a room with almost no airflow.
Crushed or kinked flex duct
Flexible ducts crushed by storage or sagging restrict airflow to rooms.
Leaky ducts
Gaps at joints waste conditioned air. ENERGY STAR estimates a typical home loses 20 to 30 percent of the air moving through its ducts to leaks and poor connections.
Damaged by pests or water
Rodents and water can damage ducts and insulation. Wet duct insulation may need replacement.
What to have ready when you call
- Property ZIP code and whether it is a home, rental or business
- Which rooms get little or no air
- Where the ducts run: attic, crawl space or basement
- Any noises, smells or visible damage
- System age, if known
How air duct repair usually works
- Inspection. The technician checks airflow at vents and inspects accessible ducts.
- Reconnect and support. Disconnected ducts are reattached and sagging runs are supported.
- Seal. Leaky joints are sealed with mastic or approved tape.
- Replace damaged sections. Crushed, torn or wet ducts are replaced and reinsulated.
Duct cleaning is a different service from duct repair. Repair fixes leaks and disconnections that waste air.
What happens when you call RepairNowUSA
- Describe what is happening in plain words and give the property ZIP code. You do not need to know which trade to ask for.
- RepairNowUSA checks for a participating independent provider who handles air duct repair in that area.
- If one is available, you are connected. The provider confirms timing, access, scope and price with you before any work.
- The provider, not RepairNowUSA, diagnoses and performs the repair.
RepairNowUSA is a referral and connection service. Provider availability and response times vary by location, time and demand, and are not guaranteed. Before you approve work, ask what was found, the price, the timing and what is not included.
Call 833-877-1717Air duct questions
Why does one room get no air?
A closed damper, a disconnected or crushed duct, or a blocked vent are common causes.
Is duct cleaning the same as duct repair?
No. Cleaning removes dust and debris. Repair fixes leaks, disconnections and damage.
Can leaky ducts raise energy bills?
Yes. Air lost through leaks makes the system run longer to reach the set temperature.
What is the best tape for ducts?
Mastic or tape listed for duct sealing. Ordinary cloth duct tape tends to fail over time.
Can I call at night?
Yes. You can call 833-877-1717 at any time, including nights, weekends and holidays. Whether an independent provider can come out right away depends on your ZIP code, the time and provider capacity, so availability is not guaranteed.
Authoritative references
These public sources give general safety context. They do not replace an on-site evaluation, and RepairNowUSA does not perform the work.