Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Trusted Air Duct Cleaning for Pasadena Homeowners
Air duct cleaning in Pasadena typically costs between $350 and $650 for a standard single-family home, and the work usually takes three to five hours from setup to final walkthrough. If your vents are pushing dust onto furniture, your allergies flare whenever the AC runs, or you can’t remember the last time the ducts were opened up, the system is due. Hollis Air Duct Pasadena has been cleaning residential and commercial ductwork since 2004, and every job is priced in writing before a technician touches a single register. Call (626) 469-5477 for a free estimate from a crew that shows up uniformed, background-checked, and bound by The Garrison Standard.
Air Duct Cleaning Services
Air Duct Cleaning Services from Hollis Air Duct Pasadena cover the full interior of the duct system: supply runs, return drops, trunk lines, and register boots. We use a negative-air method paired with a Rotobrush rotary brush system, which means the ductwork stays under vacuum while agitation loosens debris. The result is dust, pet hair, and construction debris leaving the system instead of being blown back into the rooms. Most whole-home jobs in Pasadena run $350 to $650, written down before we start and honored at the door. If you have never had the ducts opened since moving in, or you are finding fine dust on surfaces within days of cleaning, the system is asking for it.
Supply and Return Duct Cleaning
We clean both the supply side that pushes conditioned air into rooms and the return side that pulls air back to the furnace or air handler. Both sides need attention because dust settles in returns even when the system is off. The negative-air machine draws a steady vacuum during the entire cleaning, so loosened dust never finds its way back into living space.
Register and Grille Detail
Every register and grille is removed, wiped down, and reinstalled. We also clean inside each register boot, the small transition where the duct meets the floor or wall, because that is where dust builds fastest when air velocity drops near the opening. Leaving boots uncleaned is how some companies finish fast and why dust returns in a matter of weeks.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Styles & brands we work with
HVAC Duct Cleaning
HVAC Duct Cleaning is the process of cleaning the ductwork that connects your furnace, air conditioner, or heat pump to the rooms of your home. It is time to schedule this when the system sends visible dust into the air at startup, when supply registers show a gray film on the louvers, or after any remodeling project that produced drywall dust. Hollis Air Duct Pasadena runs a Nikro negative-air machine and a Rotobrush system on most residential jobs, giving us commercial-grade extraction with residential care. Budget $350 to $650 for a typical Pasadena house, and know the price is on paper before any equipment comes off the truck.
Coil and Blower Coordination
Ducts do not get dirty in a vacuum. The blower wheel and evaporator coil sit upstream and often carry the same dust load, so we check both during every HVAC duct cleaning job. If the coil is fouled, we will tell you straight and clean it, because a clean duct system attached to a dirty coil will re-contaminate within a season.
Return Air Drops and Filter Housing
The return side is where most of the dust enters the system, drawn in through the filter and into the air handler. We clean return drops thoroughly and inspect the filter housing for gaps where unfiltered air can bypass the media. A gap around the filter is one of the most common reasons a system gets dirty unusually fast, and it is a two-dollar fix that most homeowners never learn about.
Vent Cleaning
Vent Cleaning focuses on the visible parts of the system: registers, grilles, returns, and the inside of the first foot or so of duct at each opening. It matters when the louvers on a register have visible dust buildup, when certain rooms throw noticeably more dust than others, or when a bathroom or laundry vent is moving less air than it should. Hollis Air Duct Pasadena includes thorough vent cleaning as part of every whole-system job, and we also handle targeted vent cleaning on its own starting around $150 to $250 for a small home. Every register comes off, gets scrubbed, and goes back on with the screws aligned.
Room-by-Room Airflow Check
We do not just clean the vent openings; we measure airflow at each register with an anemometer before and after the work. That lets us show you the improvement in real numbers, room by room. A register that was starved for air before the cleaning should be moving noticeably more afterward, and we can point to the reading to prove it.
Bathroom and Laundry Vents
Bathroom exhaust fans and laundry vents are part of the indoor air system even though they do not connect to the HVAC. We clean these too because a clogged dryer vent is a fire risk and a slow bathroom fan invites mold on the ceiling. Vent cleaning here is about air movement, not just appearance.
Air Duct Repair
Air Duct Repair means fixing the physical ductwork itself: sealing joints, reinforcing separated sections, patching punctures, replacing crushed flex runs, and reconnecting boots that have pulled away from the subfloor. You need repairs when you see condensation on ducts in the attic, when certain rooms never reach temperature, or when the ductwork is visibly sagging or kinked. Hollis Air Duct Pasadena performs repairs in-house, and typical repair work in a Pasadena attic runs $200 to $800 depending on how many sections are compromised. We price the repair in writing before we touch it.
Leak Sealing with Mastic
We seal accessible duct joints with fiberglass mesh tape and mastic, the same method used on commercial HVAC installations. Mastic is a paste that dries hard and stays flexible, unlike foil tape which peels when the attic gets hot. A sealed joint stops conditioned air from leaking into the attic and keeps attic dust from being pulled into the ducts.
Crushed Flex Repair
Pasadena attics are tight in places, and flex duct gets crushed by boxes, by service workers, or simply by age and sagging. A crushed flex run reduces airflow to a room by half or more while raising static pressure on the blower. We replace damaged flex sections with properly sized, properly supported runs, and we support them so they do not kink again.
Ductwork Cleaning
Ductwork Cleaning is the core service at Hollis Air Duct Pasadena: a complete mechanical cleaning of all interior duct surfaces using rotary agitation under continuous negative air. It is needed when a home has never had ducts cleaned and is more than seven or eight years old, when occupants have chronic allergy or asthma symptoms indoors, or when a home inspection flags visible dust and debris in the registers. We quote whole-system pricing based on the number of systems and the home’s square footage, with most Pasadena homes landing between $350 and $650. There is no per-vent pricing and no surprise line items.
Negative-Air Method Explained
The negative-air method means we connect a large HEPA-filtered vacuum to the duct system, creating suction that holds the system under negative pressure while we work. That suction captures dust as the brush knocks it loose. It is the difference between sweeping dirt out of a house and chasing it through every room, which is what happens when a company pushes air through the system instead of pulling from it.
Rotary Brush Agitation
A Rotobrush system sends a rotating bristle brush through each duct run, scrubbing the interior walls while the vacuum pulls the loosened material out. The brush head handles both sheet metal and flex duct, and the rotational speed is matched to the material so we do not tear flex or gouge galvanized steel. This is the tool we use daily, and it is a significant step up from a shop vac and a pole.
Air Duct Inspection
Air Duct Inspection is a systematic examination of the duct system using cameras, airflow readings, and visual checks at every accessible point. You should request an inspection before buying a home in Pasadena, after a major remodel, or when you suspect leaks but cannot see them. Hollis Air Duct Pasadena performs inspections as both a standalone service and as the first step of every cleaning. A standalone inspection typically runs $100 to $200, and if the inspection leads to a cleaning on the same visit, we apply that fee toward the job.
Camera Scope of Main Trunk Lines
We run a small camera through the main trunk lines to see what is actually inside the ducts: dust depth, mold presence, debris, and separation at joints. Photos are available for you to review before we recommend any work. You should never pay for cleaning you cannot verify, and inspection photos remove that question entirely.
Pressure and Airflow Diagnostics
A static pressure reading tells us how hard the blower is working against the duct system, and airflow readings at each register tell us where the air is actually going. Numbers like these explain why one bedroom runs hot while another runs cold, and they document the improvement after the work is done. This is the diagnostic side of the trade, and it separates a real HVAC company from a vacuum truck.
Residential Air Duct Cleaning
Residential Air Duct Cleaning is our core service for houses, townhomes, and condos throughout the Pasadena area. The need is the same whether the home is 900 square feet in Highland Park or 3,500 square feet in Arcadia: dust, pet dander, and allergens accumulate in the duct system and recirculate through the living space. We clean single-system homes from $350, two-system homes from $550, and larger estates are quoted by inspection, never by the number of vents. Every residential job receives a written price before work, and every job is covered by the 365-Day Done Right Promise.
Allergy and Asthma Considerations
If someone in the house struggles with indoor allergies, clean ducts are not a cure but they remove a major irritant source. We use HEPA-filtered negative-air machines from Abatement Technologies, the same class of equipment used in hospital and commercial abatement work. The filtration on our vacuum side is HEPA-rated, so the air we exhaust is cleaner than the air we pulled in.
Post-Renovation Cleanup
Drywall dust and sawdust from a Pasadena remodel will find their way into the return side of the HVAC if the system ran during construction. That dust coats the blower, the coil, and the interior duct surfaces. We recommend a full cleaning after any project that produced drywall dust, and we will show you before-and-after photos of your own ducts so you can see the work was real.
Commercial Air Duct Cleaning
Commercial Air Duct Cleaning serves offices, medical buildings, restaurants, and retail spaces across Pasadena, Glendale, and Downtown Los Angeles. Commercial systems run longer hours, carry more load, and often go years without service, which makes them prime candidates for dust accumulation and airflow loss. Hollis Air Duct Pasadena schedules commercial work around your operating hours, including overnight and weekend slots, and pricing is based on system size and access. Expect most small commercial spaces to start around $800 to $1,200, with larger buildings quoted after a site inspection.
After-Hours Scheduling
We know you cannot shut down a restaurant dining room or a medical office during business hours. Commercial jobs can be scheduled overnight, early morning, or on weekends. The work happens while your doors are closed, and you walk in to a clean, functioning system the next morning, with the site left exactly as we found it minus the duct dust.
System Documentation for Building Owners
Property managers and building owners need records, not just results. We provide before-and-after photos, airflow readings, and a written summary of what was found and what was done. That documentation is useful for maintenance logs, tenant communications, and future inspections.
See the difference
Before
After
Before
After
Before
AfterBrands We Service
We service and clean duct systems connected to every major HVAC brand, and we work alongside filtering equipment from Honeywell, Aprilaire, and Guardsman. An Aprilaire whole-home filter or an Abatement Technologies HEPA unit is only as effective as the duct system behind it, and we clean the full path so that expensive filtration equipment actually performs. We know where these systems accumulate dust and how to clean around them without damaging the filter housing or the media.
Rotobrush is not just a brand we service; it is the brand of agitation equipment we run on most residential jobs. We know the tooling because we use it daily, and we understand what it does inside both sheet metal and flex duct. Whether you have a Honeywell media filter box, an Aprilaire mechanical filter, or any other make, the Hollis team can clean the system properly and leave the filtration components in working order.
Signs You Need a Pro Right Now
- Dust settles on furniture within two days of cleaning. That dust is not coming from an open window; it is being pushed out of the supply registers by the HVAC system. When the ducts are dirty, every cycle redistributes the dust through the house, and no amount of surface cleaning will keep up until the source is cleaned.
- The return grille looks gray and fuzzy. A visible dust mat on the return grille means the filter is catching what it can, and the rest is moving into the air handler. If the grille looks like a lint screen, the inside of the return duct looks worse, and it is time to see what is actually in there.
- Rooms stay uneven in temperature no matter the thermostat. Uneven temperatures often point to airflow restriction or duct leaks, not a failing AC. One room that never cools in August is a sign that the duct run serving that room is restricted, disconnected, or crushed, and cleaning plus repair is the fix.
- You hear a rattle or thump when the blower kicks on. Loose duct sections, debris in the system, or a separated boot can all make noise when airflow hits. The sound tells you something physical is wrong inside the wall or attic, and ignoring it usually means the repair gets bigger and more expensive later.
- No one in the house knows when the ducts were last cleaned. If the answer to “when did we last have the ducts done” is a shrug, the system is overdue. Most Pasadena homes should be cleaned every three to five years, and homes with pets or recent construction should be evaluated sooner than that.
Our Process, Step by Step
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Free Estimate and Written Quote. Call (626) 469-5477 and we schedule a visit at your convenience. We evaluate the number of systems, the home’s square footage, and access to the ductwork, then hand you a written price before any work begins. That number does not move when the technician arrives, and it does not change after the job starts.
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System Inspection and Camera Scope. On the scheduled day, we inspect the furnace or air handler, check the filter housing, and run our camera through the main trunk lines. You see what we see, and we explain what the photos show. If we find damage that needs repair, we quote it separately in writing, and you approve it before we touch it.
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Cleaning Under Negative Air. We connect the Nikro or Abatement Technologies negative-air machine to the system, creating continuous suction that captures dust during agitation. Then we work each duct run with the Rotobrush system, scrubbing the interior surfaces while the vacuum pulls the loosened material out. The work is mechanical, not just visual.
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Register Cleaning and Airflow Verification. Every register and grille is removed, cleaned, and reinstalled. We take airflow readings at each opening before and after the job, so you can see the improvement in real numbers. If a register is still underperforming, we tell you why and what it would take to fix it.
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Final Walkthrough and Written Guarantee. Before we leave, we walk the house with you, show before-and-after photos, and confirm the site is clean. You receive a written copy of the 365-Day Done Right Promise, which covers the work for a full year. If something fails within that year, we come back at no charge, including a free second visit.
How Much Does Air Duct Cleaning Cost in Pasadena?
Air duct cleaning in Pasadena runs $350 to $650 for a typical single-family home with one HVAC system. Two-system homes, common in larger Pasadena properties and in areas like Arcadia and Monrovia, generally run $550 to $900. Commercial spaces start around $800 and go up based on square footage and system access. Duct repair is priced separately, with common repairs like leak sealing or a crushed flex replacement running $200 to $800 depending on the scope.
Several factors move the price: the number of systems, whether the ductwork is in a crawlspace or a tight attic, the age and condition of the ducts, and whether the job needs repair in addition to cleaning. You avoid overpaying by getting a written quote that covers the whole job, not a per-vent price that balloons as the tech counts openings. You should never be quoted one price over the phone and a different number when the van shows up. Our free estimate includes a full written price, an inspection of the system, and a plain explanation of what the ducts actually need. Call (626) 469-5477 to schedule yours.
For homeowners in nearby Glendale, we also provide Air Duct Cleaning in Glendale, and for properties in the central city, we serve Air Duct Cleaning in Downtown Los Angeles with the same written pricing and the same 365-Day Done Right Promise.
Our Service Area Near Pasadena
Hollis Air Duct Pasadena serves the city of Pasadena and the surrounding communities: Burbank, East Los Angeles, El Monte, Alhambra, Pico Rivera, Arcadia, Monrovia, Highland Park, and Montebello. Most calls inside Pasadena are scheduled within a few days, and we work around your availability, not the other way around. If you are in the area, you can also see our home page for a full look at what we cover and how we operate. Additionally, our Air Duct Cleaning in Pasadena page details the services available at our primary location.
Serving Pasadena, CA - Our Local Coverage Area
We’re based in the Pasadena area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Air Duct Cleaning in Pasadena
Air duct cleaning is the mechanical removal of dust, debris, pet dander, and other buildup from the interior surfaces of your HVAC duct system using rotary brush agitation under continuous negative air. The goal is to remove contaminants from the path your conditioned air travels so they are not recirculated into the living space. Hollis Air Duct Pasadena performs the complete service, including supply and return runs, trunk lines, register boots, and the registers themselves, for most Pasadena homes at $350 to $650 written before work begins.
A standard single-family home in Pasadena takes three to five hours from setup to final walkthrough. Larger homes or two-system houses can take up to seven hours. We do not rush the clock; we work until the ducts are clean and the registers are reinstalled, and the written price stays the same regardless of time spent.
Most Pasadena homes run between $350 and $650 for whole-system cleaning, while two-system homes generally run $550 to $900. Commercial spaces start higher due to access and system size. Your exact quote is written down before any work begins, and the price does not change at the door. Call (626) 469-5477 for a free estimate based on your specific home.
Yes, we clean duct systems connected to Honeywell, Aprilaire, and Guardsman filtration equipment, and we work around those components carefully so the filter housing and media are not damaged. The filtration system only works as well as the duct system carrying the air, so cleaning both sides makes the filter perform. We can also inspect filter fit and housing condition during the cleaning.
Duct cleaning is a scheduled job, not an emergency dispatch service, but we do answer calls 24 hours a day with a live person, 7 days a week. If you have a duct issue that needs to be addressed urgently, such as visible mold or a disconnected duct dumping attic air into the house, call (626) 469-5477 and we will find the earliest possible slot. We do not promise arrival times we cannot meet.
The 365-Day Done Right Promise covers the work we performed for a full year from the job date. If something we cleaned or repaired fails within that year, we return and make it right at no charge, including a free second visit. The promise is in writing on every job, not spoken as a verbal assurance.
Clear a small space around the furnace or air handler and make sure we have access to the attic hatch or crawlspace entry. Move any furniture directly blocking floor registers, though we will remove the registers ourselves. There is no need to cover furniture or empty rooms; our negative-air setup keeps dust contained during the entire process.
Schedule Your Air Duct Cleaning Service in Pasadena Today
If the dust keeps coming back no matter how often you clean, the answer is in the ductwork. Call (626) 469-5477 today for a free, no-obligation estimate on air duct cleaning in Pasadena. You will get a written price before we start, a crew that shows up uniformed and on time, and a full year of coverage under the 365-Day Done Right Promise. That is the Garrison Standard, and it applies to every job we run.
Written by Roy Castellanos, Owner at Hollis Air Duct Pasadena, serving Pasadena and neighboring cities since 2004.