Fix leaky and damaged ducts — better comfort, lower energy bills.
Duct Cleaning & Air Duct Service in Chatsworth
LC Heating & Air provides duct cleaning in Chatsworth — including air duct cleaning, duct repair service, duct sealing, HVAC ductwork. Whether you need same-day service, a written estimate, or help deciding between repair and replacement, our licensed technicians handle every make and model.
We repair and service all major HVAC brands in Chatsworth, including Carrier, Trane, and Goodman, and older or discontinued units. No matter the manufacturer, we diagnose the problem accurately and give you an upfront price before any work begins.
I'm Leo, owner of LC Heating & Air. If you're living in a Chatsworth home and find that some rooms never seem to get comfortable, or your energy bills are climbing without a clear reason, the problem often isn't the AC unit itself—it's the ductwork. Most homeowners don't realize that their HVAC system is pushing air through a network of ducts that are often hidden in attics or crawl spaces, where leaks go unnoticed for years.
The Department of Energy estimates that typical residential duct systems lose 20–30% of conditioned air through leaks before it reaches the living space. In Los Angeles, where AC runs heavily from May through October, that means you're paying to cool your attic rather than your living room every summer. Duct repair is one of the highest-return HVAC improvements a homeowner can make, and it directly addresses the most common cause of comfort complaints.
Call LC Heating & Air at (323) 970-3113 for scheduling and estimates.
Local HVAC considerations
Chatsworth, CA 91311
CSLB #1073586
Common Duct Issues in Chatsworth Homes
Chatsworth has a mix of housing stock, from older homes with original sheet metal ductwork to newer remodels that might have had additions or modifications over the years. We frequently find disconnected duct sections at joints and take-offs, torn flex duct inner liners, and crushed flex duct caused by attic foot traffic. These issues prevent air from reaching the rooms that need it most.
Another issue we see is failed mastic at supply plenums and deteriorated tape joints on older systems. When these seals fail, your system is essentially pumping air into your attic. We identify these problems through a combination of airflow measurements, comparing what the equipment produces to what each room receives, and performing duct pressurization testing to quantify exactly how much leakage exists.
Understanding Your Home's Ductwork
Whether you are in a single-family home or a duplex, the layout of your ductwork is critical. In many Chatsworth properties, we see duct runs that were poorly designed during renovations or simply haven't been maintained in decades. When we inspect your system, we look at the duct condition, airflow, and equipment placement to determine if a repair will solve your comfort issues or if the ductwork is too far gone.
We don't just look at the visible parts. We check the return sizing and register balance to ensure the system is breathing properly. If your ducts are crushed or leaking, your equipment has to work much harder to meet the thermostat setpoint, which leads to premature wear on your blower motor and compressor.
Our Diagnostic Process
We don't guess. We start by measuring airflow at your registers and inspecting accessible ductwork. We use duct pressurization testing (duct blaster testing) to quantify total duct leakage as a percentage of your system's airflow. This gives you measurable proof of the problem before we ever suggest a repair.
Once we have the data, we identify the specific leaks and damage. We then present a clear repair scope with written pricing. You'll know exactly what we are going to do and why it matters before any work begins. After the repair is complete, we re-test the system to confirm the improvement in airflow.
Repair vs. Replacement: Making the Right Choice
A common question I get is whether to repair existing ducts or replace them entirely. If the ductwork is structurally sound but has leaks at the joints or minor tears in the flex duct, a repair is usually the right path. We can seal these leaks with mastic or replace small sections to restore performance.
However, if the ductwork is undersized, severely crushed, or made of outdated materials that are falling apart, replacement might be the more practical long-term decision. If the system is worth repairing, I will tell you. If the pattern points to replacement, I will explain why. My goal is to ensure the solution fits your property, not to sell you work you don't need.
What to Expect Regarding Costs
Duct repair costs vary based on the extent of the damage and accessibility. Targeted repairs to specific disconnected sections or obvious damage typically range from $200–$600. For comprehensive sealing of a full system, costs can range from $800–$2,000. If we use Aeroseal for hard-to-reach leaks, the cost is typically $1,500–$3,000.
We provide a written estimate after our diagnostic so you know exactly what you are paying for. We focus on the most cost-effective repairs that provide the biggest impact on your comfort and energy bills.
Access and Scheduling
We understand that your time is valuable. When we schedule a visit, we account for the specific layout of your home. Whether your ducts are in a tight attic or a crawl space, we come prepared to inspect and diagnose the system properly. We offer same-day service options when possible and always prioritize clear communication regarding our arrival and the scope of work.
Because we are a local contractor, we are familiar with the common building patterns in Chatsworth. We check electrical, duct condition, and equipment placement before finalizing any plan, which helps us avoid surprises and keeps the project on track.
Common Mistakes to Avoid
The biggest mistake I see is homeowners trying to fix leaks with standard duct tape. Duct tape—despite the name—is not designed for HVAC ducts and will fail quickly in the heat of an attic. We use professional-grade mastic and foil tape designed to hold up under pressure and temperature changes.
Another mistake is ignoring the root cause of poor airflow. Sometimes a room is uncomfortable because of a supply register issue, but often it's a return air problem. If you only fix the supply side but ignore the return, you won't get the comfort improvement you're looking for. We look at the whole system to ensure the fix actually works.
Health and Safety Considerations
Duct leaks aren't just an efficiency problem; they are an indoor air quality issue. Return duct leaks in attics draw unconditioned air—loaded with insulation fibers, dust, and potential mold spores—directly into your living space. Supply leaks can introduce attic air into your home through register backdrafts.
By sealing these leaks, we stop the system from pulling in dirty attic air. This is especially important in areas like ours where dust and wildfire smoke events can impact air quality. A sealed duct system helps ensure that the air coming out of your registers is the air you want to breathe.
Is Your System Worth Repairing?
If you're unsure whether to repair or replace, the best first step is a professional diagnostic. We don't push for replacement unless the equipment or ductwork is truly failing or undersized to the point where repairs won't help. We look at the age of the system, the extent of the damage, and your long-term goals for the home.
If you're ready to get a clear answer, give LC Heating & Air a call at (323) 970-3113. We'll come out, inspect your system, and give you an honest assessment of what's going on.
How the visit works
We measure airflow at registers, inspect accessible ductwork, and perform duct pressurization testing to quantify leakage.
We identify the specific leaks and damage and present a repair scope with written pricing before any work begins.
We access damaged sections and seal with mastic, reconnect disconnected flex duct, and repair torn inner liners.
We re-test duct leakage after repair and measure airflow at registers to confirm improvement.
Cost factors we review before quoting
- • Accessibility of ductwork in attics or crawl spaces
- • Total linear footage of ductwork requiring repair
- • Type of duct material (flex vs. sheet metal)
- • Severity of leaks and need for specialized sealing like Aeroseal
Useful next steps
Duct Repair in Chatsworth at a glance
- • Duct Repair provider: LC Heating & Air
- • Location served: Chatsworth, CA 91311
- • License: CSLB C-20 #1073586
- • Phone: (323) 970-3113
- • Estimate: written estimate before approved work
- • Emergency calls answered within 30 minutes (24/7)
Our duct repair process in Chatsworth
Reviewed by Leo, Owner & Lead Technician
This duct repair guide for Chatsworth is reviewed for practical HVAC accuracy by Leo at LC Heating & Air. LC Heating & Air holds California CSLB C-20 HVAC license #1073586 and provides written estimates before approved work.
What Chatsworth customers say about duct repair
Verified reviews from homeowners in Chatsworth and nearby neighborhoods who used our duct repair service.
“Our AC stopped working during a heat wave and LC had a technician here within two hours. He diagnosed a bad capacitor, had the part on his truck, and fixed it on the spot. Fair price, no upsell. Will use again.”
“Called on a Saturday because AC was blowing warm air. LC answered, sent someone the same afternoon. They found and fixed a refrigerant leak. Professional and reasonably priced.”
“Woke up to no AC at 6am. LC was at my door by 9am. Frozen evaporator coil — they explained exactly why it happened (dirty filter + low airflow) and fixed it same visit. Very professional.”
