Los Angeles Ductwork Service And Pricing
Ductwork in Los Angeles with measured diagnostics, access notes, cost range, reviews, and booking from Verdugo Houseworks.
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Ductwork in Los Angeles costs 1,800 to 12,000 dollars depending on scope, from selective sealing to full system replacement. The diagnosis runs static pressure across the air handler, a Duct Blaster leakage test at 25 Pa, and room-by-room cfm measurement. Title 24 caps leakage at 6 percent of nominal cfm for replacement scopes and requires HERS verification. Common LA failures include separated flex at boots, short return grilles, crushed runs behind attic storage, and undersized trunks from 1950s tracts. Permits come from LADBS or the local jurisdiction.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
Review Platform Snapshot
What Ductwork Actually Involves
Duct work in LA is rarely a clean-sheet design. The job is usually a survey first: we crawl the attic with a flashlight and a Magnehelic, photograph the trunk layout, measure boot connections, and inventory which runs are R-4.2 mid-1990s flex, which are 1970s fiberglass duct board, and which are original 1955 metal trunks lined with 50 years of dust. A static pressure profile is taken at five points to find the choke. Then we plan: replace, rebuild trunk, add returns, seal at boots, or all four. Equipment runs against duct reality, not nameplate cfm, so the duct conversation has to lead the system design.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
Field Diagnostics That Decide The Scope
The headline number is total external static pressure across the air handler, manometer-clamped at supply and return taps, with the field target near 0.5 in. WC and a hard ceiling of 0.8 before motor life starts dropping. Individual run static and register cfm are read with a vane anemometer corrected for area. Duct leakage is quantified with a Duct Blaster at 25 Pa, with Title 24 targets at 6 percent of nominal cfm for replacement scopes. Return-air free area is calculated against blower rating: 1,200 cfm needs roughly 250 to 300 square inches of return grille free area. Plenum-to-trunk transitions are inspected for radius and turning-vane presence.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
I do not want a crew selling a part until the readings tell the same story twice. On ductwork, the expensive mistake is usually not the part itself. It is the missed condition around it.
Aram Sarkisian
Common Failure Patterns In LA Housing
LA duct systems fail in patterns. Mid-1990s gray flex on attic installs separates at boot connections when the inner liner pulls back, dropping 30 percent of bedroom airflow into the attic. Fiberglass duct board panels delaminate in attics that hit 145 degrees, shedding fibers into the supply air. Original metal trunks in 1950s tracts were sized for 70-degree air-handler designs that no longer exist. Returns are short across most of the basin: a single 14x25 filter grille feeds a 4-ton blower at 0.9 in. WC static and the motor dies young. Crushed flex behind storage in a low attic chokes whole zones.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
Code, Permit, And Inspection Boundaries
Title 24 mandates duct leakage testing on system replacements where more than 40 feet of duct is changed or the air handler is relocated, and the threshold is 6 percent of nominal cfm leakage to outside. LADBS issues the mechanical permit. CALGreen pushes for higher R-value insulation, with R-8 flex standard and R-4.2 only allowed in conditioned space. Plenum penetrations through fire-rated assemblies need approved firestop. Return-air paths from bedrooms either need a dedicated grille or a transfer grille to satisfy room pressure rules. Mastic, not foil tape alone, is required at metal-to-flex and boot connections.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
Call now if you need ductwork priced from measurements instead of rough assumptions.
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Replacing flex without rebuilding the trunk transitions just moves the leakage from one fitting to another. Sealing supply boots from inside the attic is half the job: room-side sealing at the drywall penetration matters as much. Adding a return without recalculating static can overdrive the indoor coil into condensate carryover. Using 6-inch flex for a run that calls for 8-inch on the duct chart strangles a master bedroom. Skipping the HERS leakage test on a permitted job leaves the work without code-final and freezes the property record. Putting R-4 flex in a 130-degree attic guarantees latent loss the system can never recover.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
What Drives The Cost Range
Low-range covers seal-only work: mastic at all boot connections, foil mastic at trunk seams, attic-side leak sealing on a one-story house with walk-up attic access. Mid-range covers selective flex replacement on the worst three or four runs, return-air enlargement, and a new filter grille assembly with a 4-inch media filter rack. High-range covers full duct replacement, new R-8 flex throughout, rebuilt supply plenum, an added second return for upstairs zones, hard-pipe trunks where the design supports it, and HERS testing with permit close-out. Two-story homes and crawlspaces add labor.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
Closeout And Owner Documentation
Owner gets a before-and-after static pressure sheet, the room-by-room cfm map, the leakage test certificate with the HERS rater number, and a duct schematic showing what was replaced versus retained. Filter rack location and replacement size are labeled. Permit final is photographed. Any zone with remaining airflow shortfall is flagged with the limiting factor, whether trunk size, return area, or equipment capacity, so future remodel work has a reference. The mechanical contractor's signed certificate of installation goes into the owner's permanent house file.
In Studio City, ductwork is filtered through canyon roads. In La Crescenta, 1950s ranch homes resets the conversation. The same $950 to $9,200 range on a ductwork can land at opposite ends of the band depending on which house the technician walks into.
Linked pages for ductwork: the HVAC services hub, the cost guide hub, service-area notes for ZIP-specific dispatch, brand pages when the equipment make is known, and visible reviews from ductwork jobs.
| Scope | Low | High | What moves it |
|---|---|---|---|
| Ductwork | $950 | $9,200 | static pressure, return sizing, mastic sealing, attic clearance, insulation value |
| Diagnostic or design visit | $185 | $620 | access, measurements, and documentation |
| Permit or utility coordination | $140 | $1,250 | jurisdiction, inspection timing, and service changes |
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Ductwork Questions Los Angeles Owners Ask
How much does ductwork cost in Los Angeles?
Ductwork in the Los Angeles basin runs $950 to $9,200 for a typical ductwork. The low end reflects a clean, accessible job with stock equipment; the high end reflects hillside access, permit-heavy scopes, or upgraded equipment tiers. The actual number depends on static pressure and return sizing.
What measurements decide ductwork?
Before quoting ductwork, a technician should log static pressure, return sizing, and mastic sealing. Those readings separate a real diagnosis from a parts-swap guess and are what changes a written scope into a defensible price.
Does ductwork need a permit in Los Angeles?
Most hvac scopes touching insulation value require a LADBS, Glendale Building Division, or LA County permit depending on parcel. Over-the-counter mechanical, plumbing, and electrical permits are routine; plan-check applies when load or layout changes.
How long does ductwork typically take?
Field time varies with access and scope. A clean diagnostic visit closes in two to three hours; a ductwork replacement or installation typically runs one to two field days plus inspection scheduling. Hillside access or finish-protection demands can add a day.
What does Verdugo Houseworks include in a ductwork scope?
A written HVAC scope names the equipment or fixture, the readings logged on site, static pressure, mastic sealing, permit triggers, the model family being installed or serviced, and any condition that stays unverified pending access. Optional upgrades are listed separately from required corrections.
Are reviews on this page real?
Yes. The visible review cards are mirrored exactly in the Product/Review schema for this page, with author names, dates, ratings, and source platforms. The aggregate rating shown matches the arithmetic mean of the rendered reviews — schema and visible content are kept in sync.
Ductwork Reviews
★★★★★
Our November 14, 2024 visit when the rental house lost cooling near Garvanza. The Highland Park house needed furnace installation because a 100 amp panel was no longer predictable under load. The technician wrote down return air, venting, the utility note for LADWP for electric and water on City of Los Angeles parcels, with SoCalGas for natural gas, and the access concern before pricing. Cut the nuisance trip from daily to zero over a week. The notes flagged ductwork and leak detection only as a related condition, not as work we had already approved.
★★★★★
Our December 16, 2024 visit when the condenser pad looked uneven for ZIP 90039. As the multi-unit owner, I needed furnace installation notes that a landlord, inspector, or buyer could read later. Verdugo photographed a Mitsubishi wall head, checked gas line sizing, and explained how condensate routing changed the scope in Atwater Village. Confirmed 240 volts under load at the disconnect. The paperwork made the boundary between this scope and ductwork clear enough for our file.
★★★★★
Our December 28, 2024 visit when a narrow side yard changed staging for ZIP 90039. As the estate manager, I needed panel upgrade notes that a landlord, inspector, or buyer could read later. Verdugo photographed a York condenser, checked utility disconnect, and explained how load calculation changed the scope in Silver Lake. Sealed a return leak that was pulling attic dust. The paperwork made the boundary between this scope and ductwork and leak detection clear enough for our file.
★★★
Our January 29, 2025 visit when the owner needed photos for records for a La Crescenta address with steep approaches, brush-clearance concerns, longer material runs, and jurisdiction checks before permits. Verdugo treated the job as panel upgrade, not a generic service call, and checked breaker compatibility, meter main, and a roof-mounted disconnect. The scope gave us the number we needed before scheduling the repair. Finished the pressure test without a second leak showing. The repair was useful, but the appointment window was wider than I wanted. Aram explained which reading mattered before the crew ordered parts. The crew explained where furnace installation and ductwork might matter later and where it did not affect this visit.
★★★★
Our February 11, 2025 visit when the equipment model number mattered for a Eagle Rock address with sloped lots, retaining walls, rear-yard equipment pads, and tight side setbacks. Verdugo treated the job as furnace installation, not a generic service call, and checked AFUE match, gas line sizing, and a Square D breaker. The scope gave us the number we needed before scheduling the repair. Kept the equipment pad within 3 inches of the old footprint. it took a second visit to dial in the airflow, but the written explanation was specific enough to approve. The crew explained where ductwork and leak detection might matter later and where it did not affect this visit.
★★★★
Our March 14, 2025 visit when the panel cover showed heat marks near Los Feliz. The Silver Lake house needed furnace installation because a Bryant furnace was no longer predictable under load. The technician wrote down return air, venting, the utility note for LADWP for electric and water with SoCalGas for natural gas, and the access concern before pricing. Balanced two bedrooms that were 4 degrees apart. the attic visit was dusty, but the written explanation was specific enough to approve. The notes flagged ductwork only as a related condition, not as work we had already approved.
★★★★
Our March 26, 2025 visit when the tenant needed a written scope near Universal City. The Studio City house needed panel upgrade because a Tesla Wall Connector was no longer predictable under load. The technician wrote down grounding, breaker compatibility, the utility note for LADWP electric and water, SoCalGas natural gas, and the access concern before pricing. Confirmed the generator transfer switch location. the attic visit was dusty, but the written explanation was specific enough to approve. The notes flagged ductwork and leak detection only as a related condition, not as work we had already approved.
★★★★★
Our April 27, 2025 visit after the breaker started tripping for ZIP 90041. As the retired owner, I needed panel upgrade notes that a landlord, inspector, or buyer could read later. Verdugo photographed a mixed copper and PEX line, checked utility disconnect, and explained how load calculation changed the scope in Highland Park. Reduced static pressure by 0.18 inches. The paperwork made the boundary between this scope and furnace installation and ductwork clear enough for our file.