LC Heating & Air provides professional duct sealing services to help Beverly Glen homeowners stop energy loss, improve indoor comfort, and lower utility bills. We use duct blaster testing to quantify leaks and apply permanent sealing solutions.
I’m Leo, owner of LC Heating & Air. If your HVAC system is running constantly but your rooms still feel uneven, or if your energy bills seem high for the size of your home, the problem often isn't the furnace or the AC unit itself—it's the ductwork. In a canyon community like Beverly Glen, where homes often have older duct systems or complex layouts, conditioned air frequently leaks into attics or wall cavities before it ever reaches your living space.
At LC Heating & Air, we don't just guess where the leaks are. We use professional duct blaster testing to measure exactly how much air you're losing. Whether we use manual mastic sealing for accessible joints or Aeroseal for internal, hard-to-reach leaks, our goal is to make sure the air you pay to heat or cool actually ends up in your rooms. We are a locally owned contractor, and we believe in providing honest, written estimates so you know exactly what you're paying for before we start.
Local HVAC considerations
Marine-layer moisture and salt-air exposure can affect duct integrity over time.
We account for roof access and attic crawl space constraints common in canyon homes.
We ensure all work meets California Title 24 standards for duct leakage testing.
Why Duct Sealing Matters in Beverly Glen
Beverly Glen homes often face specific challenges with ductwork. Because of our marine-layer humidity and the way homes are tucked into the Santa Monica Mountains, duct systems can be exposed to damp conditions that degrade older materials. When ducts leak, you aren't just losing money; you're often pulling air from attics or crawl spaces into your home, which can affect your indoor air quality.
We frequently see systems where flex ducts have been crushed or sheet metal joints have separated over time. In this climate, that leakage is a major efficiency killer. If your system is leaking 20–30% of its air—which is common in older homes—you are essentially throwing away a significant portion of your energy budget every month. Sealing those leaks is one of the most effective ways to improve your home's comfort without replacing the entire HVAC system.
Repair vs. Replacement: Making the Right Call
I get asked all the time if a system needs to be replaced or just repaired. If your ductwork is structurally sound but just has leaky joints, sealing is almost always the right move. It’s a permanent fix that pays for itself through energy savings, often in under two years.
However, if the ducts are severely damaged, collapsed, or made of outdated materials that are falling apart, sealing might be a temporary band-aid. In those cases, I’ll be upfront with you about whether replacement makes more sense. My job is to give you the facts so you can make a decision that fits your home and your budget, not to push for a replacement if a repair will get the job done.
How the visit works
We perform a duct blaster test to quantify existing leakage as a percentage of system airflow.
Based on leakage quantity, duct type, and accessibility, we recommend manual sealing, Aeroseal, or a combination.
We apply mastic to all accessible joints and plenums, or set up and run the Aeroseal process for internal sealing.
We re-run the duct blaster test and provide you with before/after leakage numbers as written documentation.
Cost factors we review before quoting
- • Total square footage of the duct system
- • Accessibility of the ductwork (attic vs. crawl space)
- • Method of sealing (manual mastic vs. Aeroseal)
- • Severity of existing leaks requiring repair
Useful next steps
Our duct sealing process in Beverly Glen
Reviewed by Leo, Owner & Lead Technician
This duct sealing guide for Beverly Glen 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 Beverly Glen customers say about duct sealing
Verified reviews from homeowners in Beverly Glen and nearby neighborhoods who used our duct sealing 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.”
