South Pasadena homes were built across a century of styles, and their duct systems range from original metal in older neighborhoods to flex in attic retrofits. Our negative-air machine seals onto the main trunk and puts the whole system under suction first, then every run is scrubbed individually.
Your information is kept private and used only for your air duct service request.
The six services South Pasadena homeowners call us for most - from clearing smoke residue out of a trunk to sealing an attic system end to end. Everything on this page is air duct in South Pasadena, CA — the work, the local conditions and the coverage.
Cleaning & Care
Air Duct Cleaning
Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each run is scrubbed individually, so years of dust and debris travel one way only — out of the ducts and into the machine. The visit also covers the returns, where a year of rotating pollen seasons mats together. It is why air duct cleaning in South Pasadena, CA keeps getting recommended to neighbors.
Get a free estimate
Cleaning & Care
Air Duct Inspection
In Los Angeles County, an inspection after smoke season shows how much residue the system stored. A camera goes inside your ductwork so you can see exactly what's in there — buildup, damage or blockages — before we recommend anything. Inspections are free. Booking air duct inspection in South Pasadena, CA takes one call, and the tech arrives with everything the job needs.
Get a free estimate
Repair
Air Duct Repair
Crushed, torn or disconnected ducts leak the air you pay to heat and cool. Around South Pasadena, we repair original metal systems and modern flex retrofits alike. We repair and rebuild damaged sections so airflow is strong and even again. Air Duct Repair in South Pasadena, CA starts with a real look at the problem — never a guess over the phone.
Get a free estimate
Install & Replace
Air Duct Installation
New duct runs for additions, remodels and system upgrades — sized, sealed and balanced so every room gets its share of heating and cooling. In Los Angeles County, attic installs are routed and strapped to avoid the sags and kinks that choke older systems here. The crews behind air duct installation in South Pasadena, CA are the same ones who cover the ZIP codes listed below.
Get a free estimate
Repair
Air Duct Sealing
Leaky joints quietly waste a big share of your airflow. We seal seams and connections with professional mastic for a tighter, more efficient system. In Los Angeles County, a sealed system also keeps smoke-season air where it belongs - inside, filtered, instead of leaking at every joint. That is air duct sealing in South Pasadena, CA, done the way it should be.
Get a free estimate
Cleaning & Care
Commercial Air Duct Cleaning
Offices, restaurants, retail and multi-unit buildings across South Pasadena — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. Offices across California often book after fire season, clearing the stored residue before staff complaints start. When neighbors talk about commercial air duct cleaning in South Pasadena, CA, this is the visit they mean.
Get a free estimateNeed something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 air duct specialties. Call (888) 258-5005 and describe it.
A duct system in South Pasadena may face wildfire smoke, valley heat, coastal moisture or all three across the year. This is what we actually find here, and what we check on every visit.
Smoke is the finest dust there is, and during fire season it penetrates homes across South Pasadena even with windows shut. The duct system collects it in the trunk and returns, and after the skies clear the house keeps recirculating that residue - and its smell - until the system is cleaned from the trunk out.
Closer to the coast, the pattern flips: mild temperatures, marine-layer moisture and systems that sit idle for stretches. Dust inside those ducts sits in damp air, musty startup smells are common, and returns near the floor collect a heavier, damper load.
Small tremors are a fact of life in South Pasadena, and duct joints in attics and crawlspaces shift a little with each one. Over years, takeoffs loosen and seams open. A comfort problem with no obvious cause is worth a camera look at the connections overhead.
Garage conversions and accessory units are going up across South Pasadena, and their ductwork is often the last thing planned - tied into a trunk that was never sized for another room. Those spaces stay uncomfortable until the run is installed, sealed and balanced properly.
South Pasadena sits in Los Angeles County, and the ZIP list at the bottom of this page covers 1 serviceable ZIP codes — 91030 through 91030. The closest served neighbors are Alhambra, San Marino, Pasadena, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-5005.
Same-day service, free estimates, licensed & insured — and a air duct that lights when you click the remote.
Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each individual run is scrubbed on its own, so loosened dust and smoke residue travel toward the trunk and into the machine - never back into your rooms. We finish at the registers and show you the before-and-after on camera.
It removes the indoor reservoir: smoke that settled into duct dust keeps recirculating long after outdoor air clears. Cleaning the trunk and returns, plus a fresh high-quality filter, is the combination Los Angeles County homeowners use to close out a smoke season indoors.
Usually the run serving it: a separated attic joint, a kinked flex run, or a conversion room tied into an undersized trunk. In South Pasadena we trace the run on the inspection camera, and repair, sealing or a properly sized new run fixes it at the cause.
Rooms that lag the thermostat, long AC cycles on ordinary days, dust returning soon after cleaning and weak airflow at distant registers. In attic systems across South Pasadena, heat-dried tape and shifted joints are the standing culprits, and mastic sealing is the lasting fix.
Yes - offices, restaurants, retail, medical suites and multi-unit buildings across South Pasadena, scheduled around your hours. Commercial systems get the same method: the negative-air machine sealed onto the trunk, every run cleaned individually, and a camera record of condition.
No — and be wary of anyone who does. Every duct system is a different size and condition, so a phone price is a guess that changes at your door. Our inspections and estimates are free: a tech looks inside your actual ductwork first, then gives you one clear price before any work starts.
Air Duct Service Co is a national company with local technicians serving South Pasadena street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of California is covered from our California page. The South Pasadena list below covers 1 ZIP codes, 91030 through 91030.
Don't see your ZIP? South Pasadena also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-5005 and we will confirm coverage for your street address on the call.
Also serving nearby: Alhambra, CA · San Marino, CA · Pasadena, CA · San Gabriel, CA · Monterey Park, CA · Rosemead, CA.
Message sent.
Thanks — we'll get back to you shortly. Need it faster?
