Duct Repair and Replacement in Altadena, CA
Weak airflow, rooms that never get comfortable, dust that keeps coming back: the cause is usually the ductwork itself. We find what is wrong, then repair the damaged runs or replace the ducts, and test the result.
- Upfront, Written Pricing
- Static Pressure and Airflow Measured
- Duct Leakage TestHERS verified
- Licensed & insuredCSLB #1131338 · C-20 & C-38
Why we replace ducts instead of cleaning them
We do not offer air duct cleaning. Most ductwork in Los Angeles homes is flexible duct, and running brushes and vacuums through it can tear the inner lining and loosen the connections. Ducts dirty enough to need cleaning are usually old ducts, and old flex duct is also where the leaks, crushed runs and sagging sections are. Replacing it fixes the airflow and the dust at the source.
In Altadena, many homes have older flexible duct in the attic, and after the 2025 Eaton Fire some systems pulled smoke and ash into the ductwork.
After smoke or ash
Flexible duct has a porous inner layer. Once smoke and fine ash get into it, cleaning cannot make it reliably safe to breathe through again, so we replace it. See how we rebuilt one Altadena home’s ductwork after the Eaton Fire.
Signs your ducts need work
- Weak airflow in some rooms while others are fine
- Rooms that stay too hot or too cold no matter where the thermostat is set
- Dust that comes back soon after cleaning the house
- Crushed, torn or disconnected duct in the attic or crawlspace
- A noisy system or one that runs long cycles to hold temperature
- Rising energy bills without a change in how you use the system
Duct repair or duct replacement
We start by measuring static pressure and airflow, then inspect the ducts in the attic or crawlspace. You get a written recommendation and price before any work begins.
Duct repair
When the ductwork is in reasonable shape, we fix what is failing: reconnect and seal loose joints, replace crushed or torn sections, and correct a return that is too small for the system.
Duct replacement
When the ducts are old, damaged or sized for a different system, we replace them. The new layout follows a Manual D duct design, so every room gets the airflow it needs. Runs are supported off the attic floor, pulled straight, sealed and insulated, and the system is tested for duct leakage by an independent HERS rater as Title 24 requires. Duct replacement needs a mechanical permit, which we handle.
Duct repair and replacement in Altadena: questions
Do you clean air ducts in Altadena?
No. Most ducts here are flexible duct, and cleaning can damage them. Ducts dirty enough to need cleaning are usually old, so we repair or replace them instead.
How do I know if my ducts should be repaired or replaced?
We measure static pressure and airflow and inspect the ducts. If the problems are limited to a few joints or sections, a repair makes sense. If the ducts are old, damaged in many places or sized for a different system, replacement is the better fix.
Do I need a permit to replace ductwork in Altadena?
Yes. Duct replacement needs a mechanical permit and a HERS duct leakage test. We handle both.
Can you replace the ducts together with a new system?
Yes. When we install a new heat pump or AC, we check the ducts at the same assessment and include any repair or replacement in the written estimate.
Talk to an HVAC Pro Today
Tell us what you are noticing in your rooms. We will measure the airflow, look at the ducts and give you a clear, written recommendation.
(747) 298-8580
Mon–Fri 8:00 am – 8:00 pm · Sat–Sun 9:00 am – 6:00 pm
Our services in Altadena
- HVAC services in Altadena
- Heat pump installation
- AC installation
- HVAC repair
- Furnace installation
- Heater repair
C-20, C-38
dealer
technicians
