When Reseda residents need duct sealing, LC Heating & Air delivers same-day service backed by 20+ years of working in the LA market. Reseda occupies the central-western San Fernando Valley, a residential neighborhood characterized by its 1950s-1960s post-war housing stock and its family-oriented community. The area shares the Valley's challenging climate — intense summer heat requiring reliable air conditioning and cool enough winter mornings to make heating necessary from November through March. 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
Reseda's mid-century housing stock typically has HVAC systems that have been replaced at least once since original construction, but the ductwork is often original. Decades-old flex duct in Valley attics deteriorates from sustained heat exposure — connections loosen, insulation compresses, and air leakage increases over time. We evaluate ductwork condition on every service call and provide honest guidance on when duct replacement or sealing will meaningfully improve comfort and efficiency.
Neighborhood Context
Reseda represents the accessible, working-family neighborhoods of the Valley where HVAC investment decisions are practical rather than luxury-oriented. We respect that and always present repair-vs-replace options with clear cost analysis. When a $400 repair can extend a system's useful life by three to five years, we recommend the repair. When throwing money at an aging system is no longer economical, we say so directly and present replacement options at multiple price points.
Why Choose Us
Call (323) 970-3113 for same-day duct sealing in Reseda. We answer 24/7 — emergencies and scheduled appointments alike. Licensed, insured, CSLB #1073586.
Our duct sealing process in Reseda
What Reseda customers say about duct sealing
Verified reviews from homeowners in Reseda and nearby neighborhoods who used our duct sealing service.
“LC did a full duct inspection and found we were losing 35% of our conditioned air through disconnected joints in the attic. After sealing and repairing, the difference was immediate — better airflow, lower bills, no more hot spots.”
“Called LC after another company told me I needed a $12,000 system replacement. LC diagnosed a bad TXV valve and fixed it for $380. Honest company — they saved me from an unnecessary replacement.”
“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.”