HVAC Cleaning Cost - Flat Price Per System, No Per-Vent Upsells

How Much Does HVAC Cleaning Cost in Pasadena?

HVAC cleaning in Pasadena typically costs between $350 and $650 for a standard single-system home in 2026, with most homeowners paying around $450. Larger homes with multiple systems or heavily soiled ductwork run higher, often reaching $800 to $1,200. For a full system clean that includes supply ducts, return ducts, the blower motor, and the evaporator coil, expect the job to take 3 to 6 hours and land in that $450 to $650 range. HVAC Cleaning in Pasadena is priced by the scope of the system, not by square footage alone, which keeps the quote straightforward.

HVAC Cleaning Cost Breakdown (2026)

Here’s what we’re seeing across Pasadena homes right now, from bungalows in Bungalow Heaven to larger two-story houses in Hastings Ranch. These are line-item ranges, so you know what each piece costs before you decide what’s worth doing.

Typical HVAC Cleaning Costs in Pasadena

Service	Typical Price Range	What It Includes
Basic duct cleaning (single system, up to 10 vents)	$250 – $400	Supply and return duct cleaning, vent covers removed and wiped, basic inspection
Full HVAC cleaning (single system, 10 – 20 vents)	$400 – $650	All ducts, blower motor, evaporator coil, drain pan, access points sealed after cleaning
Large home or two systems	$700 – $1,200	Everything in a full clean, repeated across zoned systems; can include crawl space or attic duct runs
Dryer vent cleaning (add-on or standalone)	$90 – $160	Full run from dryer to exterior termination, lint removed, airflow verified
Duct sealing (add-on)	$400 – $900	Mastic or Aeroseal application at accessible joints; priced by linear feet of accessible duct
Filter replacement (Honeywell, Aprilaire media)	$25 – $75	Cost of the media filter; installation included when done during a clean

These numbers reflect what Pasadena homeowners should expect from a crew that actually does the work right. A $99 whole-house special that you’ll see on a postcard is a loss-leader to get a technician in the door, and the price almost always climbs once the blower is opened and the real scope is “discovered.” The honest range is what it is. At Hollis Air Duct Pasadena, the price is written down before we touch anything, and it does not move at the door.

What Drives the Price Up or Down

• Number of vents and returns. A 1940s Pasadena bungalow might have 6 vents. A 4,000-square-foot house in Annandale might have 30. More vents mean more time, more hose runs, and a higher price.
• Access to the air handler. If your furnace is in a tight attic closet off a San Rafael Hills hillside lot, that’s harder to reach than a garage-mounted unit in a flat Altadena-adjacent neighborhood. Access time is labor time.
• Condition of the ductwork. Homes near the 210 freeway corridor or in older parts of Northwest Pasadena often have ducts with decades of embedded dust, pet hair, or construction debris from renovations. Heavily soiled ducts take longer to clean properly.
• Whether the coil needs cleaning. If the evaporator coil has never been cleaned and it’s matted with a gray sludge, that’s a separate labor line. It’s also one of the highest-value parts of the job because a dirty coil is the single biggest drag on cooling efficiency in a Pasadena summer.
• Pet hair and smokers. Homes with multiple dogs or a history of indoor smoking need more passes with the rotary brush and more time on the negative-air machine. It’s the same system, just a longer day.

What Affects HVAC Cleaning Pricing in Pasadena

Pasadena’s housing stock is older than most of Los Angeles County. That matters because the age and layout of the home dictate what a cleaning crew actually encounters inside the walls and under the floor.

• Home age and duct material. Homes built before 1970 in neighborhoods like Madison Heights and Bungalow Heaven often have rigid metal ducts, which clean well with a rotary brush system. Homes from the 1990s and 2000s in northeast Pasadena frequently have flex ducts, which require lower-torque cleaning to avoid tearing the inner liner. That changes the equipment setting, not usually the price, but it affects how long the job takes.
• Floor plan and number of stories. Two-story homes in Hastings Ranch or the Linda Vista area mean longer hose runs from the truck-mounted negative-air machine to the farthest register. It’s not a big cost driver, but it adds 30 to 60 minutes of labor compared to a single-story ranch.
• Seasonal demand. Late spring and early fall are the busiest months in Pasadena. Homeowners think about HVAC when the first heat wave hits in May or after the Santa Anas kick dust through everything in October. Booking outside those peaks doesn’t change the price at Hollis, but it does change how quickly you can get on the schedule.
• Multi-system homes. Pasadena has a significant number of homes with a main system plus a separate unit for an addition or a converted garage. Each system is its own cleaning job because each has its own air handler, coil, and duct run. A two-system house is typically priced as two jobs, not one, which is the honest way to bid it.
• Renovation history. If the previous owner did a remodel and the crew didn’t seal off the ducts, you’ll have drywall dust and sawdust layered inside the return plenum. Homes in the Chapman Woods and San Rafael areas that went through 2010s-era flips often have this problem. It takes extra time to pull that out properly.
• Access points. Some older Pasadena homes don’t have service access panels cut into the return or supply plenums. If we need to add an access point to reach the coil or the blower, that’s a small additional charge for the panel and the work, usually $75 to $125. It pays for itself the next time the system needs service.

How to Save on HVAC Cleaning

You don’t need to cut corners to keep the price reasonable. You need to avoid paying for work the system doesn’t need and avoid crews that charge a low teaser rate and then “find” problems once they’re inside.

• Combine the dryer vent with the HVAC clean. If you’re already bringing a truck and a negative-air machine to the house, adding a dryer vent cleaning is quick and typically priced lower as an add-on than as a standalone visit. Lint-clogged dryer vents are also the cause of thousands of house fires a year, which makes this one of the cheapest safety moves you can make.
• Don’t pay for chemical sanitizers unless you have a specific problem. Some companies push a “duct sanitizing fog” as an upsell. If there’s actual mold or biological growth, that’s a different conversation and requires a legitimate antimicrobial treatment. If there isn’t, skip it. A properly executed mechanical clean with a rotary brush and negative air extraction handles the job.
• Change your filters on schedule after the clean. A clean system with a clogged filter is dirty again within a month. If we install a fresh Honeywell or Aprilaire media filter during the job, that’s money well spent, but the ongoing schedule is on you. Set a recurring reminder every 90 days for 1-inch filters, every 6 to 12 months for 4-inch media filters.
• Ask for a written price before the work starts. That’s not a negotiation tactic; it’s a filtering tool. If a company won’t put the price in writing before they start, walk away. At Hollis Air Duct Pasadena, the written quote is how we work every job, and it’s a Garrison Standard requirement, not a favor.

If you want to know exactly what your system needs and what it will cost, call (626) 469-5477. The estimate is free, and a live person answers the phone, 24/7.

What’s Actually Included in a Full HVAC Clean?

You should know what the money buys. A legitimate full-system HVAC cleaning is not just vacuuming the vent covers. It involves moving enough air through the ducts to dislodge and extract embedded particulate, and it requires opening the air handler to clean the components that actually touch your air.

Here’s what a full clean at Hollis includes:

• Rotary brush cleaning of all supply and return ducts. We run a Rotobrush system through every accessible duct run. The brushes spin while a vacuum from the negative-air machine pulls dislodged material out of the system rather than letting it settle.
• Negative-air extraction. The Nikro negative-air machine connects to the system and puts the ductwork under negative pressure while cleaning. This is the industry-standard method for containment: what we loosen, we remove, and it doesn’t end up back in your living room.
• Blower motor and housing cleaning. The blower wheel accumulates a fine layer of dust on the curved blades, which reduces the volume of air the system can move. We remove the access panel, clean the blower wheel and housing, and verify rotation.
• Evaporator coil cleaning. The coil sits in the supply side of the air handler. Over years it collects a film of dust and pet hair that insulates the coil and reduces efficiency. Cleaning it properly is one of the highest-value parts of the job.
• Drain pan and drain line flush. A clogged condensate drain is the most common cause of water damage around HVAC systems in Pasadena during humid summer weeks. We flush the pan and line as part of the clean.
• Vent cover removal and washing. Every register and grille is removed, wiped down or washed, and reinstalled. The visible parts of the system should look like someone actually did the work.
• Post-clean filter installation. We install a fresh filter at the end of the job. If you use a media cabinet, we can supply and install the Honeywell or Aprilaire replacement.

Each of these steps is written into the work order before the job starts. If a competitor’s quote doesn’t mention the coil, the blower, or the drain line, that’s not a cheaper price, it’s a smaller job.

How Long Does HVAC Cleaning Take in Pasadena?

A single-system house in Pasadena with 10 to 20 vents takes 3 to 6 hours for a full clean. Two-system homes or heavily soiled systems can run 6 to 9 hours. The timeline is driven by the number of vents, the condition of the ductwork, and how much access the technicians have to the air handler.

We schedule jobs in a defined window and arrive inside that window. That’s part of the Garrison Code that every Hollis technician works under: arrive on time, in uniform, with the price already written. If the job runs long because the system is dirtier than expected, that does not change the quoted price.

Why Duct Sealing Matters for Pasadena Homes

Pasadena sits in a climate where summer cooling loads are real, and leaky ducts make air conditioning more expensive than it needs to be. Duct leakage is common in older Pasadena homes: joints that were sealed with tape back in the 1980s or 1990s have dried and separated, and every leak is a spot where conditioned air leaks into the attic or crawl space instead of reaching the living areas.

If we find significant leakage during a cleaning, we’ll show it to you and quote duct sealing as a separate line item. The most common method in residential Pasadena homes is mastic sealing at accessible joints, applied with a brush to the seams and collars where leaks show up. Some homes are better candidates for an aerosol sealant like Aeroseal, which is applied from the inside and finds leaks that mastic can’t reach. That decision is made case by case and always priced in writing before any work begins.

Duct sealing typically runs $400 to $900 depending on how much of the duct system is accessible and how many leaks are found. It is not part of the standard cleaning price, and we don’t push it unless the leakage is measurable and real.

Pasadena-Specific Factors That Affect Your Ducts

Pasadena’s geography and climate shape what ends up in your ductwork, and it’s worth understanding because it explains why some homes need cleaning more often than others.

Santa Ana wind events. Every fall, the Santa Anas push fine dust and grit through the San Gabriel Valley. Homes in the northern parts of Pasadena, up against the foothills near Eaton Canyon and the Linda Vista area, get more of it because the wind comes down the canyons first. That dust gets pulled into return ducts and eventually coats the blower motor and coil. After a heavy Santa Ana season, you can feel it in the system: the blower sounds slightly off, and airflow at the registers drops.

Older housing stock. Pasadena has a large inventory of pre-war homes. Those houses have beautiful bones and, in many cases, ductwork that hasn’t been touched since the Carter administration. It’s not that the ducts are failing; it’s that they’ve been accumulating particulate for 40 or 50 years. A first-time clean on an original system takes longer and moves more material than a second or third clean on a newer house.

Proximity to the 210 and 134 freeways. Freeway-adjacent neighborhoods on the western and northern edges of Pasadena collect more fine particulate from traffic. It’s not just a filter issue; that particulate ends up in the return ducts over time. Homes within a half-mile of the 210 corridor in Northwest Pasadena typically need cleaning more often than homes up in the San Rafael Hills.

Tree cover. Pasadena is a heavily treed city, which is part of its character. But mature oaks and sycamores drop fine pollen and organic debris that gets pulled into outdoor air intakes and return vents. Homes on tree-lined streets like those in Madison Heights and South Orange Grove deal with more organic material in the ducts than homes on more exposed lots.

How Often Should You Clean Your HVAC in Pasadena?

The honest answer for most Pasadena homes is every 3 to 5 years for a full HVAC clean. That’s the cadence that keeps the system running efficiently without spending money on work that doesn’t need to be done yet.

There are cases that justify more frequent cleaning:

• Allergy or asthma in the household. Cleaner ducts mean less recirculated particulate. If someone in the home has respiratory issues, a 2 to 3 year cadence makes sense.
• Multiple pets. Homes with two or more dogs or cats accumulate pet hair in the return ducts faster. Plan on cleaning every 2 to 3 years if the animals shed heavily.
• Recent renovation. If you’ve had drywall work, flooring installation, or major carpentry done, schedule a cleaning once the work is complete. Construction dust will be in the ducts whether you can see it or not.
• Moving into a new home. If you bought a Pasadena house and you don’t know when the ducts were last cleaned, assume never. A clean on move-in is one of the best things you can do for the system, and it establishes a baseline.
• After a nearby wildfire. The Eaton Fire proved that Pasadena is not immune to wildfire smoke and ash. If your neighborhood was exposed to heavy smoke, schedule a cleaning and a filter change even if you’re not due for one.

Why the 365-Day Done Right Promise Matters

Most companies in this trade offer no meaningful guarantee. You call, they clean the ducts, they leave, and if something wasn’t done right, you’re on your own. At Hollis Air Duct Pasadena, every job is covered by the 365-Day Done Right Promise in writing. Here’s what that means in plain terms:

• If the work fails within a full year of the service date, we return and make it right at no charge.
• That includes a free second visit. It’s not negotiated. It’s in writing on every work order before the job starts.
• The promise applies to every service we perform: HVAC cleaning, dryer vent cleaning, and duct sealing.

Roy Castellanos leads the Hollis Air Duct Pasadena team, and the guarantee carries his name on it. That’s not a marketing line; it’s an operational standard. When the owner stands behind the work for a full year in writing, the crew does the job like the boss is going to hear about it if they don’t.

What the Garrison Standard Means on Your Job

Hollis Air Duct Pasadena is an independently owned and operated business, part of the Garrison Partners family. The Garrison Standard is the operating code every technician works under, and it’s specific enough to be checked:

• Arrive inside the quoted window. Not “sometime between 8 and 5.” A defined window, and we hit it.
• Price in writing before work starts. Every job gets a written quote. If the scope changes, the written quote changes before any additional work happens, not after.
• Background-checked, uniformed technicians. You know who’s coming into your home before they arrive, and they show up looking like they belong on a job site.
• The job is done by the book. The HVAC cleaning method follows industry-standard negative-air protocols with rotary brush agitation, not a shop vac and a prayer.
• The site is left clean. Drop cloths in the work area, shoe covers in the house, and the registers reinstalled when we leave. No dust trail to the truck.

These aren’t optional courtesies. They’re the standard, and a technician who doesn’t meet them doesn’t work under the Hollis name in Pasadena.

Is HVAC Cleaning Worth the Cost?

For most Pasadena homes that haven’t been cleaned in four or more years, yes. The cost of a full clean is modest compared to what a neglected system costs down the line. Here’s the arithmetic:

• Efficiency. A clean evaporator coil and blower wheel move more air with less strain. The inefficiency of a dirty system shows up on Southern California Edison and Pasadena Water and Power bills during summer months, when the system is fighting its own dirty internals.
• Equipment life. A blower motor pushing against a dirty coil runs hotter and works harder. Heat is the enemy of motor windings. Replacing a blower motor in Pasadena typically runs $400 to $900 installed, which is in the same range as a full HVAC clean that helps prevent the failure in the first place.
• Air quality inside the home. The system recirculates whatever is in the ducts. Cleaning removes accumulated dust, pet dander, and general particulate rather than running it past the filter over and over.
• Peace of mind about what’s actually in your system. A cleaning includes an inspection. We open the air handler, and you see the coil, the blower, and the drain pan. If there’s a developing problem, you find out before it becomes an emergency repair.

The question isn’t really whether the cleaning is worth it. The question is whether you’re paying the right price for work that’s actually done correctly. That’s where the difference between a $99 teaser special and a real job shows up.

FAQs – HVAC Cleaning Cost

How much does HVAC cleaning cost in Pasadena in 2026?

A full HVAC cleaning in Pasadena runs $350 to $650 for a single-system home, with most jobs landing around $450. Larger homes or two-system houses range from $700 to $1,200. Call home office line at (626) 469-5477 for a written quote specific to your system.

Is it cheaper to clean or replace ductwork?

Cleaning is dramatically cheaper. A full clean costs $350 to $650, while replacing ductwork in a Pasadena home typically runs $3,000 to $7,000 depending on the home’s layout and accessibility. Most ductwork in good structural condition is worth cleaning, not replacing. Duct sealing at $400 to $900 addresses leakage without the cost of new ducts.

Can you come today?

Same-day and next-day appointments are often available, especially outside the spring and fall peaks. We keep the schedule honest: a live person answers the phone 24/7 at (626) 469-5477, and they’ll tell you the real next available window rather than promising something we can’t hold.

How much does dryer vent cleaning cost in Pasadena?

As a standalone service, dryer vent cleaning runs $90 to $160. When added to a full HVAC clean, it’s usually priced at the lower end of that range because the equipment is already on site. A clogged dryer vent is a fire hazard, and this is the cheapest insurance against it you’ll buy all year.

Does a $99 whole-house duct cleaning deal actually work?

No, it’s a lead-generation tactic. The $99 covers minimal work, usually just cleaning visible vent covers or one or two registers, and the technician’s job is to “discover” problems that push the real price to $600 or more once they’re in the house. At Hollis, the price is written before any work starts, and it reflects the full scope of the job. You’ll never get a written quote for $99 because we won’t pretend a real job can be done for that.

How do I know if my ducts actually need cleaning?

If it’s been four or more years since the last clean, or you’ve never had it done in the time you’ve owned the home, assume the ducts need attention. Visible dust blowing from the registers when the system kicks on, a musty smell when the AC runs, or reduced airflow despite a fresh filter are all signs. An inspection is part of the service call, and we’ll show you what’s in the system before we start cleaning it. Call (626) 469-5477 for a free estimate.

Get a Written Quote for Your Pasadena Home

If you want a real number for your system, call (626) 469-5477. You’ll reach a live person who can schedule a visit, answer questions about what the job includes, and get Roy Castellanos’s team on your schedule. The estimate is free, the price is written before any work starts, and every job is covered by the 365-Day Done Right Promise in writing. That’s the way it should work, and that’s the way we do it.

Pricing reflects the Pasadena market as of 2026. Hollis Air Duct Pasadena offers free estimates – call (626) 469-5477.

Written by Roy Castellanos, Owner at Hollis Air Duct Pasadena, serving Pasadena and surrounding communities since 2004.