How Much Does It Cost to Replace Ductwork in Palmdale, CA?
If you're asking how much does it cost to replace ductwork, here's the straight answer: national cost guides put a typical single-family home at $1,400–$5,600 installed — roughly $25–$55 per linear foot. Larger or hard-to-access Antelope Valley homes can reach $7,500–$10,000+.
This guide covers what drives pricing, when repair is enough, and why ductwork matters more in Palmdale, CA — where ducts often live in a 150°F attic.
How Much Does It Cost to Replace Ductwork?
For a typical 1,200–2,000 sq ft home, national cost guides (including Angi's 2026 data) put full ductwork replacement at $1,400–$5,600 installed: old ducts out, new insulated runs in, joints sealed, airflow tested. The $25–$55 per-linear-foot pricing reflects the biggest cost driver — footage. In the Antelope Valley, expect the upper half: long attic runs, R-8 insulation, and Title 24 compliance add cost. These are national estimates, not a quote.
Ductwork Cost Breakdown
Cost per linear foot and per duct run
Per-foot pricing bundles material, labor, and insulation into the $25–$55 national range. Branch runs feeding each room typically work out to $250–$500 each with fittings, boots, and registers — so 8–12 runs plus returns land in the thousands fast.
Flexible vs. sheet metal duct costs
Flexible insulated duct dominates Antelope Valley retrofits — cheaper to buy, faster to snake through tight attics. Rigid sheet metal costs more in material and labor but resists crushing and pests. Most Palmdale jobs use flexible branches with a sheet-metal or duct-board trunk.
Attic vs. crawlspace accessibility
Labor is the swing factor. Most Antelope Valley homes are slab-on-grade, so ducts run through 150°F attics — crews work in short, careful shifts. Tight trusses and buried old ducts add hours. When a contractor prices your job, they're pricing the working conditions.
6 Factors That Move the Price
- Total linear footage — the single biggest driver.
- Duct material — flexible vs. sheet metal vs. duct board.
- Attic access — heat, headroom, and obstructions set labor hours.
- Insulation rating — R-8 costs more, saves more.
- Design changes — resizing trunks, adding returns, moving registers.
- Permits and code — Title 24 compliance and HERS testing.
Repair vs. Replace: When Duct Sealing Is Enough
Not every leaky system needs full replacement. National guides put typical duct repairs at $200–$1,000: mastic on the joints, reconnected runs, patched insulation, a replaced crushed branch. Replacement earns its price when problems are systemic — widespread leakage, undersized trunks, or a layout never designed for the home's load.
Why Ductwork Matters More in the Antelope Valley
Desert conditions punish ductwork. In the Antelope Valley, supply ducts often run through 150°F attics — and cooled air in poorly insulated ducts arrives at upstairs rooms already warmed, a top reason your upstairs stays hotter than your downstairs. With cooling season running May into October, every leak taxes your electric bill for six months. New R-8 insulated, sealed ductwork is the difference between rooms that cool and rooms that never do.
The Payback: Energy Savings From New Ducts
Leaky ducts waste 20–30% of the air your system conditions — you're cooling your attic. Sealed, insulated ductwork lets a right-sized system hit its rated SEER2 efficiency, cycle less, and hold even temperatures. With the DOE finding up to 30% bill cuts from new sealed ducts, a mid-range duct job can pay back in a few cooling seasons on a high-use desert home.
Ductwork Replacement Estimates in Palmdale, CA — Kings Comfort & Climate Solutions
Out-of-sight ductwork is easy to ignore — until the upstairs won't cool and the bill climbs. Kings Comfort & Climate Solutions inspects, seals, and replaces ductwork and AC systems in Palmdale, CA and across the Antelope Valley. These are national estimates — your actual cost depends on your home's size, access, and duct condition. Call Kings Comfort & Climate Solutions at (661) 519-4974 for an on-site estimate in Palmdale, CA.
Frequently Asked Questions
How much does ductwork cost per foot?
Roughly $25–$55 per linear foot installed — material and accessibility set where you land. Short, easy attic runs with flexible duct sit near the low end; long runs, tight attics, or sheet-metal work push high. Per-foot is only part of the quote: design changes, registers, insulation upgrades, and permits ride along. For a Palmdale home, the number that matters is an on-site measurement — call (661) 519-4974.
Is it worth replacing 20-year-old ductwork?
Age alone doesn't condemn ductwork — leakage, damage, design, and insulation condition matter more than the install date. But two decades in a desert attic is a hard life: insulation compresses and tears, seals dry and crack, flex runs kink. If inspection finds major leakage — leaky ducts can waste 20–30% of conditioned air — replacement usually pays for itself. If the ducts test tight and intact, resealing buys more years.
Should I replace ducts when I replace my AC?
Often, yes. New high-efficiency equipment needs specific airflow, and old, leaky, or undersized ducts frequently can't deliver it — starving the system of return air or dumping cooled air into a 150°F attic. Then the expensive new unit runs longer, cools unevenly, and never hits its rated efficiency. Many Palmdale homeowners discover the ducts were the real problem during an AC quote. Evaluate both together.
Can ductwork be repaired instead of replaced?
When damage is localized, yes. Disconnected runs, crushed sections, leaky joints, and torn insulation can usually be repaired or resealed for roughly $200–$1,000 nationally. Mastic on every joint plus fresh insulation restores ducts that are structurally sound. Repair stops making sense with systemic problems: widespread leakage, undersized trunks, poor original design. A duct leakage test tells you which side you're on.
How long does duct replacement take?
Most single-family duct replacements take 1–3 days. A straightforward attic swap can finish in a day; larger homes, tough attic access, or layout redesigns — new trunks, added returns, moved registers — stretch toward three. The crew removes old ductwork, installs and seals new runs, insulates to code, and tests airflow. You'll be without heating and cooling during the work, so many Palmdale homeowners schedule it in spring or fall.
Get an On-Site Ductwork Estimate
Kings Comfort & Climate Solutions — Lancaster, CA. Call (661) 519-4974 for same-day service.
Request My Free Estimate