Supply Duct Cleaning in Alpharetta, GA

Supply Duct Cleaning in Alpharetta, GA

Supply duct cleaning in Alpharetta typically costs between $350 and $700 for a full system, depending on home size and the number of vents, and most jobs are completed in 3 to 5 hours. For a detailed breakdown, see our guide on How Much Does Air Duct Cleaning Cost? (2026 Price Guide) - Alpharetta, GA. Supply ducts are the pathways that carry conditioned air from your furnace or air handler into your living spaces, and they collect dust, pet dander, and debris the same way return ducts do. When supply ducts are dirty, every room in your Alpharetta home receives air that has passed through that buildup.

At Hollis Air Duct Alpharetta, we clean supply ducts as part of a complete Air Duct Cleaning in Alpharetta job, because cleaning only half the system leaves the other half pushing contaminants back into the air you breathe. Roy Castellanos runs our Alpharetta location under The Garrison Standard, which means your price is written down before we start and your work is covered in writing for a full year. Call (762) 769-7145 to schedule a free estimate.

Key Takeaways

• Supply duct cleaning in Alpharetta runs $350 to $700 for a full system, with the price set before work begins.
• Cleaning supply ducts and return ducts together is the only way to actually reduce dust circulation in your home.
• Every Hollis Air Duct Alpharetta job is covered by the 365-Day Done Right Promise, in writing.
• Technicians arrive in uniform, inside the quoted window, and leave the site clean.

When You Need Supply Duct Cleaning

Most Alpharetta homeowners don’t think about supply ducts until something forces the issue. Here are the signs we see most often in homes across Alpharetta, Crabapple, and Windward:

• Dust returns within a day or two of cleaning. If you wipe down furniture and see dust settle back quickly, your supply ducts are likely pushing particles into the room every time the HVAC runs.
• Rooms that never seem to smell clean. Supply ducts carry odor from accumulated debris, especially in Alpharetta’s humid summers when moisture can cause organic material to decay inside the ducts.
• Visible dust around supply registers. Gray or black streaks forming on the wall or ceiling around a supply vent means the duct behind it is loaded with debris.
• Recent construction or renovation. Drywall dust, sawdust, and insulation fibers get pulled into supply ducts during remodels and stay there unless physically removed.
• Uneven airflow from room to room. A supply duct loaded with debris reduces the volume of air that can pass through, which makes some rooms hotter in summer and colder in winter.
• You’ve never had the ducts cleaned and the home is more than 10 years old. Supply ducts accumulate material gradually, and after a decade, most systems in Alpharetta benefit from a professional cleaning.

If any of these describe your home, call (762) 769-7145. We’ll give you a written price before any equipment comes off the truck.

Our Supply Duct Cleaning Process

We use the negative-air method combined with rotary brushing, and we start with a Video Inspection so you can see what commercial crews verify before and after. Here’s how it works in your Alpharetta home:

1. Inspection and written price. We walk the system with you, check the supply plenum and a sample of registers, and write down the price. That number does not move once the work starts.
2. Seal off the supply openings. We cover each supply register in the home so the vacuum creates negative pressure inside the ductwork. This keeps debris from escaping into your living space while we work.
3. Connect the negative-air machine. Using professional-grade Nikro negative-air equipment, we pull a continuous vacuum on the duct system. Air moves in one direction, and debris moves with it into the collection chamber.
4. Rotary brush the supply trunks and branches. A Rotobrush rotary brush system runs through each supply duct, dislodging caked-on dust, pet hair, and debris that the vacuum alone won’t pull free. The brush scrubs the walls of the ducts while the negative air carries the material out.
5. Clean the supply registers and boots. We remove and clean each register, plus the boot that connects the register to the duct below it. These are the spots where buildup is most visible and most often missed by crews that rush.
6. Final walkthrough. We show you the collection chamber before we leave, so you can see what came out of the system. We also verify that each supply register is seated correctly and the site is clean.

Every step is done by a background-checked, uniformed technician who works to The Garrison Code: arrive inside the window, price in writing, do the job by the book, leave the site clean. That’s the standard our Garrison Partners family has operated under since 2004.

What Supply Ducts Do and Why They Get Dirty

Supply ducts are the delivery side of your HVAC system. The return side pulls air from your home, passes it through the filter and over the coil, and then the supply side pushes conditioned air back into every room. In a typical Alpharetta home with 8 to 14 supply registers, that’s a lot of surface area for dust to collect on.

Alpharetta’s climate plays a role here. Our summers bring high humidity, and when humid air moves through cool supply ducts, condensation can form inside. That moisture causes dust particles to stick to the duct walls instead of passing through. Over months and years, the layer builds. Pet dander, pollen from the Georgia pines, and everyday household dust all contribute. The result is a supply system that delivers air through a layer of accumulated material.

Replacing your HVAC filter helps, but it doesn’t solve this. The filter sits on the return side, before the air reaches the coil. It catches what’s coming into the system, not what’s already settled inside the supply ducts downstream. That’s why a full Air Duct Cleaning in Alpharetta includes both supply and return ductwork.

We also recommend checking your filtration setup while we’re there. Brands like Honeywell and Aprilaire make media cabinets and high-efficiency filters that do a better job of keeping supply ducts clean after we’ve done our work. If your filter is a basic fiberglass panel, we’ll tell you what upgrading would do for the life of the cleaning, in plain terms, with a written price if you want it done.

Supply Duct Cleaning Pricing in Alpharetta

Here’s what you can expect to pay for supply duct cleaning as part of a full system cleaning in Alpharetta. These are the numbers we quote, and the price is written down before any work starts:

Home Size	Approximate Price Range
Condo or townhome (up to 1,500 sq ft)	$350 – $450
Single-family home (1,500 – 2,500 sq ft)	$450 – $550
Larger home (2,500 – 3,500 sq ft)	$550 – $650
Large home with multiple systems (3,500+ sq ft)	$650 – $700+

What affects the price of your supply duct cleaning:

• Number of supply registers and trunk lines. More rooms means more supply branches to clean. A five-bedroom home in Windward has more supply ducting than a two-bedroom condo in downtown Alpharetta.
• Access to the ductwork. If your air handler is in a crawlspace or a tight attic in an older Alpharetta neighborhood, access adds time and effort.
• Level of buildup. Ducts with heavy debris from a renovation or years of pet dander take longer to clean than ducts with light, even dust.
• Condition of the ducts. If we find gaps or disconnected sections during the cleaning, we’ll show you and give you a separate written price for duct sealing work if you want it.

We do not charge by the “vent” as a teaser price and then inflate the total. We walk the system, count the work, and write down one number. That’s the price. Call (762) 769-7145 to get your written estimate.

Why Supply Duct Cleaning Matters in Alpharetta Specifically

Alpharetta sits in a humid subtropical climate zone. From May through September, our dew point regularly sits above 70 degrees. That means your HVAC system runs long cycles, and the supply ducts carry cool air through an unconditioned attic or crawlspace where the surrounding temperature is much warmer. Condensation inside supply ducts is common here, and it accelerates the rate at which dust sticks to duct walls.

Homes in communities like Windward, Crabapple, and the neighborhoods around North Point Parkway tend to run their air conditioning from April through October. That’s seven months of continuous operation, roughly 2,100 hours of runtime per year. Every hour, air passes through the supply ducts. If those ducts are dirty, every hour of runtime is recirculating that material through your living spaces.

We also see a lot of homes in Alpharetta where the ductwork was installed in the 1990s and early 2000s during the city’s major growth period. Ductwork from that era often has gaps at the joints, which pulls attic air and insulation particles into the supply stream. We can identify those gaps during a cleaning and seal them with duct sealing mastic, which is a thick paste applied to the joints that hardens and closes the air leaks. That’s a separate service with its own written price, but it pairs naturally with supply duct cleaning.

The Garrison Standard and the 365-Day Done Right Promise

Hollis Air Duct Alpharetta is part of the Garrison Partners family, an independently owned and operated business that’s been in this trade since 2004. The parent brand predates most of the air duct cleaning companies currently working in Alpharetta, and the business runs on a written standard.

Here’s what The Garrison Standard means on your job:

• Written price before work begins. We inspect the system, we tell you the number, we write it down. The price at the door is the price on the invoice.
• Arrival inside the quoted window. We give you a time window and we show up inside it. If something changes, we call you. We don’t leave you waiting.
• 365-Day Done Right Promise. Every job is covered in writing for a full year. If the work fails within that year, we come back and make it right at no charge. That includes a free second visit, not a negotiation.
• Background-checked, uniformed technicians. You know who is walking into your home before they arrive. Our technicians are vetted and clearly identified.
• Site left clean. We treat your home like the job isn’t done until the work area is clean. No dust, no debris, no mess left behind.

Roy Castellanos runs this location to that standard. Not to the standard of “good enough,” but to what’s written down and expected. That’s the difference between a bid you hope will work out and a bid you can hold up in writing for a year.

Supply Duct Cleaning vs. Return Duct Cleaning: What’s the Difference?

A lot of homeowners ask why the job isn’t just “duct cleaning” without all the talk about supply and return sides. The answer is that the two sides of your system do different jobs and collect different kinds of debris. Here’s the straightforward version:

Return ducts pull air from your home back to the air handler. They collect what’s floating in your living space: dust, pet hair, hair, lint, and whatever gets pulled toward the return grilles. Return ducts tend to have more visible buildup near the return grilles because that’s where air velocity is highest.

Supply ducts push conditioned air from the air handler out to your rooms. They collect what gets past the filter and what accumulates on the duct walls over time: fine dust, pollen, mold spores in humid conditions, and debris from the air handler itself. Supply duct buildup is often finer and more evenly distributed, but it’s constantly being pushed into your living spaces.

Cleaning only one side leaves the other side circulating whatever it holds. If you clean returns but not supplies, the supply side keeps blowing accumulated dust into your rooms. If you clean supplies but not returns, the return side keeps feeding debris back into the air handler. A proper Air Duct Cleaning in Alpharetta job covers both.

Equipment That Does the Job Right

We use professional-grade equipment from manufacturers that commercial and industrial cleaning crews trust. Here’s what that means in plain terms:

• Nikro negative-air machines create a strong vacuum that pulls air and debris out of your ducts through a sealed collection system. The negative pressure keeps what we dislodge from entering your living space.
• Rotobrush rotary brush systems run a spinning brush through each duct to scrub the walls. Dust that’s caked on over years responds to mechanical agitation, not just vacuum pressure.
• Abatement Technologies makes the HEPA filtration units we use to capture fine particles that ordinary vacuums would exhaust back into your home.

These tools matter because they let us do a job we can verify. At the end of the cleaning, the collection chamber tells the story. You’ll see what came out of your ducts, and we’ll show you before we leave.

For homeowners who want to keep supply ducts cleaner longer, we can also talk through filtration upgrades from Honeywell and Aprilaire. A better media filter or an upgraded filter cabinet reduces what reaches your supply ducts in the first place. We’ll give you a straight answer on whether an upgrade makes sense for your system, and a written price if you want it done.

FAQs – Supply Duct Cleaning

How much does supply duct cleaning cost in Alpharetta?

Supply duct cleaning as part of a full system cleaning in Alpharetta typically costs between $350 and $700, depending on home size, the number of supply registers, and how much buildup is present. We give every homeowner a written price before work begins, and that price does not change. Call (762) 769-7145 for a free estimate and an exact number for your home.

How long does supply duct cleaning take?

Most supply duct cleaning jobs in Alpharetta take 3 to 5 hours for a typical single-family home. Larger homes with multiple systems or heavy buildup can take up to a full day. We’ll give you a more specific timeframe when we inspect your system, and we arrive inside the window we quote.

Is it cheaper to clean supply ducts myself?

You can vacuum out the inside of a supply register with a shop vac, but that only reaches the first few inches of the duct. The supply trunks and branches run through walls, floors, and ceilings, and proper cleaning requires negative-air equipment and rotary brushes that reach the full length of each duct. Hiring a professional costs more upfront, but it’s the only way to actually remove the material accumulating where you can’t reach. We also have the equipment to capture debris safely instead of blowing it into your home’s air. Call (762) 769-7145 to get a written price.

What’s the difference between supply duct cleaning and air duct cleaning?

Air duct cleaning is the broader service that covers both supply and return ductwork, the air handler, registers, and grilles. Supply duct cleaning is the portion of that job focused on the ducts that deliver conditioned air from your air handler to your rooms. At Hollis Air Duct Alpharetta, we clean supply ducts as part of a complete Air Duct Cleaning in Alpharetta job because cleaning one side without the other leaves your system recontaminating itself. For a quote on the full job, call (762) 769-7145.

Call Hollis Air Duct Alpharetta for Supply Duct Cleaning

If your supply ducts haven’t been cleaned in years, or you’re seeing dust around your registers, or you just want a straight answer on what your system needs, search Air Duct Cleaning Near Me in Alpharetta, GA and call us. We answer the phone 24/7 with a live person, and we’ll set up a time that works. Roy Castellanos and the team at Hollis Air Duct Alpharetta serve homeowners throughout Alpharetta, Roswell, Milton, Johns Creek, and the surrounding areas.

The estimate is free, the price is written down before we touch anything, and the work is covered for 365 days in writing. That’s the standard. Call (762) 769-7145 to schedule your supply duct cleaning.

Written by Roy Castellanos, Owner at Hollis Air Duct Alpharetta, serving Alpharetta.