I'm Leo from LC Heating & Air. If your Century City home has rooms that never seem to get comfortable, your ductwork is likely the culprit. I help homeowners stop paying to cool their attics and start getting the airflow they actually paid for.
The Department of Energy estimates that typical residential duct systems lose 20–30% of conditioned air through leaks before it ever reaches your living space. In a place like Century City, where our AC systems run hard from May through October, that means you are paying to cool your attic or wall cavities rather than your home. Duct repair is one of the highest-return HVAC improvements you can make, directly addressing the most common cause of comfort complaints like uneven temperatures and rooms that are always too hot or too cold.
At LC Heating & Air, I don't believe in guessing. I use duct pressurization testing to measure exactly how much air you are losing. Whether you have disconnected flex ducts, crushed runs in a tight mechanical closet, or leaks in a hard-to-reach attic, I provide a clear, written estimate so you know exactly what is being fixed and why before we start.
Local HVAC considerations
Century City (90067)
CSLB #1073586
(323) 970-3113
Duct Issues Unique to Century City
Century City presents unique challenges for HVAC systems. Between our high-density housing stock, which includes many older multifamily properties and condos, and the heat-island effect from our local business hubs, your equipment is under constant pressure. I frequently see ductwork that was poorly installed in cramped mechanical closets or routed through areas with limited ventilation. When ducts are crushed or improperly sealed in these tight spaces, the system has to work twice as hard to push air through.
Because of our local climate, rooftop package units and attic-mounted systems are common. These units are exposed to extreme heat, which makes the integrity of your ductwork even more critical. If your supply ducts are leaking in a hot attic, you are essentially pumping 130-degree air into your home. I focus on identifying these specific leaks, repairing disconnected runs, and ensuring your system is properly balanced for the layout of your building.
Understanding Your Home's Ductwork
Whether you live in a high-rise condo or a single-family home in the area, your duct system is the 'lungs' of your HVAC. In many of our local buildings, I find that ducts have been damaged by previous maintenance work, foot traffic in attics, or simply the natural degradation of tape and mastic over time. A common issue I see is 'return leakage,' where the system pulls in dirty, unconditioned air from your attic or wall cavities instead of pulling air from inside your home.
If your home has rooms that are consistently harder to heat or cool than others, it is rarely the fault of the equipment itself. It is usually a distribution problem. My goal is to get your system back to its original design capacity so your equipment doesn't have to run as long to keep you comfortable.
My Diagnostic Process
I don't walk in and start selling parts. I start by listening to your concerns and inspecting the system. I measure airflow at your registers to see which rooms are underperforming. I also perform a duct pressurization test (duct blaster test) to quantify the total leakage in your system. This gives us a baseline number so we can prove the repair actually worked.
Once I have the data, I show you exactly where the leaks are. If it is a simple reconnection or a patch, we handle it. If the damage is widespread or in an inaccessible area, we discuss options like Aeroseal or targeted repairs. You will have a written estimate in hand before I pick up a tool.
Repair vs. Replacement: The Honest Truth
A lot of companies will tell you that any duct issue requires a full system replacement. That is rarely the case. If your ducts are fundamentally sound but have a few leaks at the joints or a disconnected run, a repair is the most practical and cost-effective solution. I will always tell you if a repair is enough to get your system running efficiently.
However, if I find that your ductwork is undersized for your equipment, or if the material is so degraded that it is literally falling apart, I will be honest with you about the limitations of a repair. My job is to give you the information you need to make a decision that makes sense for your home and your budget, not to push for a replacement you don't need.
What Affects the Cost?
Duct repair costs vary based on accessibility and the extent of the damage. Accessing ducts in a tight attic or a cramped mechanical closet takes more time than working in an open space. The type of repair also matters—sealing a few joints with mastic is a different project than performing an Aeroseal treatment or replacing a crushed section of flex duct.
I provide transparent pricing for all of our services. A basic inspection starts at $125–$200, while comprehensive sealing can range from $1,000 to $3,000. We will walk through the scope of work together so there are no surprises on your final bill.
Scheduling and Access in Century City
Working in Century City means navigating specific logistical challenges. Whether your building requires coordination with an HOA, has limited parking, or requires access through shared walls or rooftops, I have the experience to handle it. I make sure we have the right access windows and permissions before we start, so we aren't wasting your time or causing disruptions to your neighbors.
If you are a tenant or a property manager, I am happy to coordinate directly with the necessary parties to ensure the job gets done smoothly. Just give us a call at (323) 970-3113 to discuss your building's specific requirements.
Health, Safety, and Air Quality
Duct leaks aren't just an efficiency problem; they are an indoor air quality problem. When your return ducts leak, they pull in dust, insulation fibers, and potential mold spores from your attic or wall cavities and distribute them throughout your home. Sealing these leaks is one of the best ways to improve the air you breathe every day.
I take safety seriously. We ensure that all repairs are done to code, and we check that your system is operating safely after the work is complete. You shouldn't have to worry about what's coming out of your vents.
Common Mistakes to Avoid
The biggest mistake I see is homeowners trying to 'fix' ducts with standard duct tape. It doesn't last. The heat in our attics causes the adhesive to fail within weeks, leaving you with the same problem you started with. Proper duct repair requires specialized mastic or foil tape designed for HVAC systems.
Another mistake is assuming that a 'duct cleaning' will fix a comfort problem. Cleaning removes dust, but it doesn't seal leaks. If your ducts are leaking, you need a repair, not just a cleaning. I am happy to help you distinguish between the two so you don't spend money on the wrong service.
Next Steps for Your Home
If you are ready to address your duct issues, the first step is a professional diagnostic. I will come out, inspect your system, and give you a clear, honest assessment of what is going on. We will look at your airflow, check for leaks, and discuss the best path forward.
Give LC Heating & Air a call at (323) 970-3113. We are licensed (CSLB #1073586) and ready to help you get your home back to a comfortable temperature. Let’s get your system running the way it was designed to.
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 (attics, crawl spaces, or mechanical closets)
- • Total amount of leakage identified during testing
- • Type of repair method required (manual sealing vs. Aeroseal)
- • Condition of existing duct materials
Useful next steps
Our duct repair process in Century City
Reviewed by Leo, Owner & Lead Technician
This duct repair guide for Century City 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 Century City customers say about duct repair
Verified reviews from homeowners in Century City and nearby neighborhoods who used our duct repair service.
“Had LC install a Daikin mini split in our 1940s bungalow that never had AC. The work was clean, the unit is incredibly quiet, and our bedroom finally stays cool in summer. Highly recommend.”
“We converted our garage into an ADU and needed HVAC. LC installed a Mitsubishi single-zone mini split — permits, electrical, everything. The unit is so quiet you can barely hear it running. Our tenant loves it.”
“Got a 3-zone Daikin system for our craftsman home — bedrooms upstairs, living room downstairs. Each room has its own temperature control and the monthly electric bill is actually lower than our old window units combined.”
