When Westwood residents need duct sealing, LC Heating & Air delivers same-day service backed by 20+ years of working in the LA market. Westwood encompasses the area surrounding UCLA, bounded roughly by Bel Air to the north, Brentwood to the west, and Century City to the south. The neighborhood has an unusually diverse mix of housing: single-family homes in the Westwood Hills area, large apartment and condominium buildings along Wilshire Boulevard, and student-oriented rental properties near the UCLA campus. That local knowledge means our technicians arrive knowing what equipment and access challenges to expect — cutting diagnostic time and getting repairs done faster.
### What Duct Sealing Accomplishes Duct sealing is one of the highest-ROI home energy improvements available to Los Angeles homeowners. When conditioned air leaks into attic or wall cavities before reaching the living space, you're paying to condition space you don't occupy. Studies of California homes consistently show 20–30% duct leakage in older homes — and every percentage point of leakage reduction shows up directly in your utility bill.
Overview
### Manual Sealing vs. Aeroseal LC Heating & Air offers two duct sealing approaches. Manual sealing uses mastic (a durable, flexible sealant applied by hand) and foil tape at accessible duct joints, take-offs, supply and return plenums, and connection points. This is the right approach when significant leakage locations are accessible and the duct system is in otherwise good structural condition. Aeroseal internal sealing is our solution for duct systems where significant leakage is distributed throughout the system in locations that aren't manually accessible — it seals from the inside out using a pressurized polymer aerosol that deposits on and seals leak sites as air passes through them.
### California Energy Code and Duct Sealing California Title 24 requires duct sealing testing (duct blaster test) as part of any HVAC replacement permit — and requires that systems failing the test be sealed to meet the leakage standard before permit signoff. If you've replaced HVAC equipment without a permit, or had a permitted replacement that failed to test the ducts, your system may have significant unsealed leakage.
### What You'll Notice After Duct Sealing Homeowners consistently report three immediate improvements after duct sealing: rooms that were previously hard to condition are now comfortable, the HVAC system runs for noticeably shorter cycles to reach the thermostat setpoint, and utility bills decrease. These improvements are permanent — properly applied mastic and Aeroseal are rated for the life of the duct system.
Local HVAC Challenges
Westwood's mix of single-family homes and high-rise condominiums means we work with both traditional split-system HVAC and commercial-grade building systems. Condo buildings along the Wilshire Corridor typically use centralized chiller plants with individual fan coil units — maintenance and repair on these systems requires different expertise than residential split systems. We service both types and can work with HOA maintenance schedules and building management companies.
Neighborhood Context
The UCLA student rental market means many Westwood properties have HVAC systems that see heavy use and may not receive the maintenance that owner-occupied homes get. We work with property managers throughout Westwood to establish preventive maintenance programs that reduce emergency calls and extend equipment life. For homeowners in the residential areas, we provide the same thorough service we deliver throughout our coverage area — honest diagnosis, fair pricing, and quality work.
Why Choose Us
Call (323) 970-3113 for same-day duct sealing in Westwood. We answer 24/7 — emergencies and scheduled appointments alike. Licensed, insured, CSLB #1073586.
Our duct sealing process in Westwood
What Westwood customers say about duct sealing
Verified reviews from homeowners in Westwood 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.”