When Larchmont residents need duct repair, LC Heating & Air delivers same-day service backed by 20+ years of working in the LA market. Larchmont Village sits at the heart of the Hancock Park neighborhood, centered around the charming commercial strip on Larchmont Boulevard between Beverly and Third Street. The residential streets surrounding the village are lined with well-maintained period homes — Craftsman bungalows, Spanish Colonial Revival, and Tudor Revival — most built between 1920 and 1940. That local knowledge means our technicians arrive knowing what equipment and access challenges to expect — cutting diagnostic time and getting repairs done faster.
### The Hidden Cost of Leaky Ducts in LA Homes 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 Los Angeles homeowner can make — and it directly addresses the most common cause of comfort complaints (uneven temperatures, rooms that are always too hot or too cold).
Overview
### Signs Your Ducts Need Repair Most homeowners have no idea their ducts are leaking because the leaks are hidden in attics, crawl spaces, and wall cavities. We identify duct problems through a combination of airflow measurements (comparing what the equipment produces to what each room receives), duct pressurization testing, and visual inspection of accessible duct sections. Common damage we find: disconnected duct sections at joints and take-offs, torn flex duct inner liners, crushed flex duct from attic access foot traffic, failed mastic at supply plenums, and deteriorated tape joints on older sheet metal ductwork.
### Repair Methods Duct repair methods depend on the type of damage and duct material. Disconnected flex duct sections are reconnected and sealed with mastic and foil tape. Torn inner liners require section replacement. Sheet metal joints are sealed with mastic. For systems with widespread small leaks throughout the distribution system, Aeroseal duct sealing (an internal pressurized sealing process) can address leaks that aren't accessible for manual repair.
### Before and After Documentation We document duct leakage before and after repair using duct blaster testing — a pressurization test that quantifies total duct leakage as a percentage of system airflow. This gives you measurable proof that the work improved your system's performance.
Local HVAC Challenges
Larchmont's older homes share the challenges common to all pre-war Los Angeles construction: original ductwork that may be undersized, asbestos-wrapped ducts in some pre-1960 homes requiring professional remediation before any duct work, and electrical panels that may need upgrading to support modern HVAC equipment. We assess all of these factors before recommending equipment and include any required upgrades in our proposals so there are no surprises during installation.
Neighborhood Context
The Larchmont area's residential character and walkability have maintained strong property values, and homeowners here tend to invest in quality HVAC systems that will last. We recommend higher-efficiency equipment for Larchmont homes where the ductwork and insulation can support it, and we always provide honest analysis of when a premium system will actually pay for itself through energy savings versus when a standard-efficiency system is the smarter investment for the home's specific characteristics.
Why Choose Us
Call (323) 970-3113 for same-day duct repair in Larchmont. We answer 24/7 — emergencies and scheduled appointments alike. Licensed, insured, CSLB #1073586.
Our duct repair process in Larchmont
What Larchmont customers say about duct repair
Verified reviews from homeowners in Larchmont 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.”