Duct Cleaning Cost - What It Actually Costs, Quoted Free

How Much Does Duct Cleaning Cost in Marietta?

Duct cleaning in Marietta, GA typically costs between $285 and $490 for a full system cleaning of an average single-family home, with most homeowners paying around $370. Larger homes with multiple HVAC systems or heavily contaminated ductwork can push the total to $650 or more. The price includes cleaning of supply and return ducts, registers, and the main trunk lines.

That’s the number you’ll see most often when you call around for quotes. What that number doesn’t tell you is what you’re actually getting for it. Some companies quote a low flat rate and then add charges once they’re inside the home. Others bundle the work into a proper cleaning with before-and-after photos and a written guarantee. We’ll walk through exactly what a fair duct cleaning price looks like in Marietta, what pushes the cost higher, and how to avoid paying for work that never happens.

Our home page has more on how we operate, and our Duct Cleaning in Marietta service page details exactly what a full cleaning includes.

Duct Cleaning Cost Breakdown (2026)

The standard duct cleaning job in Marietta covers the supply ducts, return ducts, trunk lines, and all visible registers. Here’s what each component costs on its own, and what a complete job looks like when it’s done properly.

Service Component	Typical Cost in Marietta
Full duct system cleaning (average 1,500 – 2,500 sq ft home)	$285 – $490
Per-vent cleaning (when priced per register)	$18 – $35 each
Main trunk line cleaning only	$150 – $250
Additional HVAC unit (second system or zoned home)	$90 – $160 per extra unit
Furnace/air handler interior cleaning	$80 – $150
Dryer vent cleaning (common add-on)	$75 – $125
Sanitizing fog or antimicrobial treatment	$125 – $250
Whole-home cleaning for 3,000+ sq ft or heavy contamination	$550 – $750+

A few notes on these numbers. The price difference between a $285 cleaning and a $490 cleaning usually comes down to what’s included. The lower end assumes a home with accessible ductwork in good shape and no signs of mold or pest activity. The upper end includes cleaning the air handler interior and all registers, plus a visual inspection of the duct runs. In older Marietta neighborhoods like Whitlock Heights or Forest Hills, homes built before 1985 often have metal ducts that have been in place for 40 years. Those systems take longer to clean properly because the buildup is thicker, and a technician who cares about the result will spend the extra time.

One thing we hear consistently from homeowners who call us after getting a lowball quote: the company arrived, spent 45 minutes, ran a brush through a few ducts, handed over an invoice, and left. That’s not duct cleaning. That’s duct visiting. A real cleaning on an average Marietta home takes 3 to 5 hours with proper negative-air equipment.

What’s Included in a Proper Duct Cleaning Job

• Supply ducts, return ducts, and trunk lines cleaned under negative pressure
• All registers and grilles removed, cleaned, and reinstalled
• Furnace or air handler blower compartment inspected and cleaned
• Visual verification with photos before and after (ask for this specifically)
• Dryer vent cleaning offered as an add-on, never hidden in the final bill

What Affects Duct Cleaning Pricing in Marietta

Every home in Marietta is different, and the ductwork layout has more to do with price than most people realize. Here are the factors that actually move the number.

1. Home Size and Duct Run Complexity

A 1,200-square-foot ranch off Powder Springs Road has a simpler duct layout than a 3,400-square-foot two-story in Indian Hills. More square footage means more linear feet of duct, more registers, and more time on the job. Two-story homes also have vertical trunk runs that require different equipment to reach properly. A good rule of thumb: every additional 500 square feet above 2,000 adds roughly $40 to $60 to the total.

2. Number of Heating and Cooling Systems

Homes with dual systems are common in Marietta, particularly in neighborhoods like East Cobb where older homes were expanded with additions. Each system typically has its own duct network. If your home has two furnaces or two air handlers, expect to pay the base rate plus $90 to $160 for the second system. A technician who quotes one system over the phone without asking how many you have is guessing, not quoting.

3. Accessibility of the Ductwork

In crawlspace and attic-heavy Marietta construction, access matters. Attic ducts in homes with low-pitch roofs or limited crawl space clearance slow the work down. If the technician has to work around attic insulation that hasn’t been touched since the Carter administration, the job takes longer. Some companies add a $50 to $100 access surcharge for what they call “tight crawl” or “conditioned-space” work. We don’t surcharge for access, but you should always ask.

4. Age and Condition of the Duct System

Ducts in homes built before 1990 are often uninsulated metal, which collects a different kind of buildup than the flexible insulated ducts used in newer construction. Older systems may also have sections that were patched, taped, or retrofitted over the years. A cleaning technician who finds a duct section that has separated at a seam will need to flag it, and repairs add cost. In our experience, about 1 in 5 Marietta homes we clean has at least one duct connection that has come loose, usually in the attic.

5. Mold, Pest Activity, or Heavy Debris

If the technician finds mold growth or evidence of rodents or insects in the ducts, basic cleaning isn’t enough. Remediation adds $250 to $500 or more depending on severity. Marietta’s humidity makes mold in ductwork a real concern, especially in homes where the AC condensate drain has been leaking into the duct insulation. A company that quotes a flat price over the phone without looking will either skip the mold or surprise you with an add-on at the end.

6. Add-On Services: Sanitizing and Dryer Vents

Duct sanitizing, which we apply as a fog after cleaning, runs $125 to $250. Dryer vent cleaning is $75 to $125. Neither is required for every home, but if you’ve never had your dryer vent done and your laundry takes two cycles to dry a load, it’s worth adding while the equipment is already there.

How to Save on Duct Cleaning

Duct cleaning is not the place to hunt for the absolute lowest price. The equipment alone that a legitimate company uses, truck-mounted negative air machines and rotary brush systems, costs tens of thousands of dollars. A company quoting $99 for a whole-home cleaning is either losing money or not doing the work. Here’s how to save without gambling on a bad job.

Combine Services

If you’re having the ducts cleaned in the spring before AC season or in the fall before heating season, bundle it with a furnace or AC tune-up. In Marietta, a tune-up runs $80 to $200 on its own, and some companies discount when you schedule both at once. It makes sense: the technician is already at the house, the system is open, and the blower compartment is accessible.

Ask About the Full Price Before Booking

The Kingswell Way, which is how Cold Harbour Heating and Air operates, says the price gets written down before any work starts. Not a verbal estimate. A written price. Homeowners in Marietta who have been burned by door-knock duct cleaning promotions know the difference. Ask any company you consider: “Is the price you’re quoting from the phone the price I pay when the work is done?” If they hedge, call someone else.

Check for Home Warranty or Insurance Coverage

Some homeowner’s insurance policies in Georgia cover duct cleaning after a named event, like a fire, a flood, or significant storm damage. If your ducts are dirty because of a specific incident rather than general buildup, call your agent before you pay out of pocket. More commonly, a home warranty will cover duct cleaning if it’s tied to a covered HVAC repair. It’s worth a phone call.

Do This Before the Cleaning

Change your air filter before the technician arrives. It costs $10 to $20 and helps the system pull better airflow during the cleaning process. Also, write down any rooms worse than others. In Marietta homes, we often see the rooms farthest from the air handler, typically upstairs bedrooms, collect more dust. Tell the technician where the problem spots are so they spend time there instead of treating every register the same.

For a free estimate on your home’s duct cleaning, call us at (762) 240-5599. We’ll give you a written price before the work starts, and we won’t change it at the door.

FAQs – Duct Cleaning Cost

How much does duct cleaning cost in Marietta in 2026?

Duct cleaning in Marietta runs $285 to $490 for most single-family homes, with an average around $370. Larger homes, dual systems, and heavier contamination push the total to $550 to $750 or more. Call (762) 240-5599 for a free written estimate on your specific home.

Is duct cleaning worth the money?

For most Marietta homes, duct cleaning every 3 to 5 years is worthwhile if the system shows visible dust buildup, you’ve had renovation work done, or a family member has allergy or asthma issues. The payoff is in cleaner air and better airflow, not just in lower energy bills. A neglected system that’s never been cleaned in a 20-year-old house usually shows a visible difference immediately after a proper cleaning.

How long does duct cleaning take?

A proper duct cleaning on an average Marietta home takes 3 to 5 hours. Companies that claim to finish a whole-home cleaning in under an hour are not doing the job thoroughly. If you’re quoted a 45-minute cleaning, that’s a red flag, not a feature.

Is it cheaper to clean ducts or replace them?

Cleaning is almost always cheaper, at $285 to $490 compared with $2,500 to $6,000 for a full duct replacement. Replacement only makes sense when ducts are collapsed, heavily damaged by pests, or so deteriorated that cleaning won’t restore airflow. A good technician will tell you honestly which situation you have, and won’t recommend replacement just to run up the bill.

Can you come today to clean my ducts in Marietta?

We answer the phone with a live person 24 hours a day, 7 days a week. Same-day service depends on the schedule and the size of the job, but we’ll tell you exactly what’s available when you call. Our goal is to give you a firm window and then show up in it. Call (762) 240-5599 to check today’s availability.

Does duct cleaning include the dryer vent?

Dryer vent cleaning is usually a separate line item at $75 to $125. Some companies bundle it into a package; others offer it as an add-on. It’s worth adding while the technician is at the house, especially if your dryer has been taking longer to dry clothes or the vent hasn’t been cleaned in years.

How We Price Duct Cleaning in Marietta

Cold Harbour Heating and Air is an independently owned and operated member of the Kingswell network. We’ve been serving Marietta since 2003, and our approach to pricing hasn’t changed: the price is written down before any work begins, and it doesn’t change when the technician arrives. That’s one of the five values of The Kingswell Way, alongside showing up in the window promised, leaving the job site cleaner than we found it, putting the guarantee in writing, and coming back if something fails.

The name itself comes from an old idea. A cold harbour was a roadside shelter where travelers waited out the weather before continuing on. We think comfort in any season is the job, and we built our whole operation around making the wait as short as possible.

Every duct cleaning includes a written 365-Day Done Right Promise. If the cleaning doesn’t hold, meaning the system shows signs of the same problem within a full year, we come back and correct the work at no charge. No verbal promises. It’s on paper before we leave.

Our technicians are background-checked and uniformed, and they’re trained to service nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. The same person who cleans your ducts can also handle a furnace or AC problem while they’re there, because in a home, it’s all one system.

What to Look For in a Marietta Duct Cleaning Company

There are plenty of companies in Cobb County that will quote a duct cleaning over the phone. Fewer will do all of these things:

Written Price Before the Work Starts

If a company won’t put the price in writing before they touch the system, you’re gambling. A written price protects you from the classic bait-and-switch where the phone quote is $99 and the final bill is $499. At Cold Harbour Heating and Air, the written price is the price. Every time. That’s a non-negotiable part of The Kingswell Way.

Before and After Photos

Ask any company you’re considering whether they’ll show you what the inside of the ducts looked like before and after. A legitimate cleaning will produce a visible difference, and a professional company will document it. If they won’t show you photos, ask yourself what they’re hiding.

A Real Person on the Phone

Victor Mancini, who leads our Marietta team, has built the company around the idea that a homeowner should never talk to a machine when they have a problem. We answer the phone with a live person every hour of every day. No voicemail trees, no automated menus. You call, a person picks up, and we figure out what you need.

A Guarantee That’s Written Down

Every duct cleaning we do includes the 365-Day Done Right Promise. If the cleaning fails within a year, we come back and do it again at no charge. That guarantee is written down before we leave your home. It’s not a verbal assurance; it’s a paper contract. This is how we’ve operated since 2003, and it’s the standard that every technician who works under the Kingswell name is required to meet.

Duct Cleaning in Marietta: What Local Conditions Mean for Your Ducts

Marietta’s climate shapes how quickly ducts get dirty. Our summers run hot and humid from May through September, which means air conditioners run for months at a stretch, pulling air through the ducts constantly. That continuous operation means more air passing through the system, which means more dust, pet dander, and pollen collecting on duct surfaces. Homes in neighborhoods like Sandy Plains and Lassiter, with heavy tree coverage, tend to build up pollen and outdoor debris faster. Homes in West Cobb, where newer construction means tighter building envelopes, often see more pet dander and indoor particulate buildup because less outdoor air is exchanged.

Winter brings a different issue. When gas furnaces run, the temperature swings can cause condensation inside the ducts, especially in attic spaces that aren’t well insulated. That moisture is what allows dust to cake onto duct walls instead of blowing through. If your attic gets cold during our few freezing weeks each year and the furnace is running hard, the condensation cycle accelerates buildup. We see this consistently in older Marietta homes with original attic insulation.

The practical takeaway: ducts in Marietta get dirty faster than ducts in drier, cooler climates. If you’re not sure when yours were last cleaned, and you can see dust around your registers within a week of vacuuming, they’re probably due.

Pricing reflects the Marietta market as of 2026. Cold Harbour Heating and Air Marietta offers free estimates – call (762) 240-5599.

Written by Victor Mancini, Owner at Cold Harbour Heating and Air, serving Marietta since 2003.