Whole-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.
Fast, Reliable Air Duct Cleaning Across Johns Creek
Air duct cleaning in Johns Creek, GA typically runs $350 – $650 for a full residential system, with most jobs completed in a single visit. Our crews serve Johns Creek from our Atlanta dispatch office, and we’re familiar with the specific challenges these homes present. If you’re noticing musty odors when the AC kicks on, uneven cooling between upstairs and downstairs, or allergy symptoms that spike at home, your ductwork is likely the culprit. Call us at (361) 326-5060 for a free estimate, or read on to understand what we actually find in Johns Creek homes and what it costs to fix it right.
Why Hollis Air Duct Cleaning Is Johns Creek’s Preferred Air Duct Cleaning Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Air Duct Cleaning team has worked in Johns Creek long enough to know the difference between a quick vacuum job and a proper moisture-control repair. Our technicians are background-checked and uniformed, and every job starts with a written price that doesn’t move once we’re inside your home. The 365-Day Done Right Promise covers every repair in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues. When you schedule in Johns Creek, we arrive inside the quoted window, price the work in writing before touching anything, and leave the site clean. That’s The Garrison Standard, and it’s how we operate in every home we enter.
Vent Cleaning in Johns Creek
Vent Cleaning in Johns Creek is often where homeowners first notice a problem: dust blasting from supply registers, dark staining around return grilles, or a room that never reaches the thermostat setpoint. In this market, vent cleaning alone rarely solves the underlying issue. The real work usually involves what connects those vents.
Our vent cleaning service removes built-up debris from supply and return registers, but we also inspect the boot connections and nearby duct runs for the sagging, condensation damage, and mold growth that Johns Creek’s humid attic conditions create. A typical vent cleaning with register-level inspection runs $150 – $250; if we find wet flex duct or crushed runs behind the wall, we’ll show you before quoting repair.
Supply Vent Cleaning
Supply vents push conditioned air into your rooms. In Johns Creek’s large zoned homes, we often find supply boots in unconditioned attics where summer heat and humidity degrade the mastic seals. We clean the register, inspect the boot, and note any gaps that are pulling attic air into your living space.
Return Vent Cleaning
Return vents pull air back to the air handler. These run larger and dirtier, and in Johns Creek homes with attic returns, they’re often where we first spot condensation staining or mold. Cleaning the return path matters because every particle bypassing the filter gets a second pass through your blower and coils.
Air Duct Repair in Johns Creek
Air Duct Repair in Johns Creek is where we spend most of our time on jobs that started as “just a cleaning.” The combination of flexible ductwork installed in the 1980s through 2000s, unconditioned attics, and humid subtropical summers creates failure modes that vacuuming alone cannot address.
Typical air duct repair in Johns Creek ranges from $200 – $400 for localized flex duct replacement and re-sealing, to $800 – $1,500 for multi-zone systems with several damaged runs, crushed sections, or plenum leaks. We write the price before we cut anything, and we photograph the damage so you see what we’re fixing.
Flex Duct Replacement and Sag Repair
Flex duct sags over time, especially in long attic runs. The low point traps condensate from humid attic air, and that moisture feeds mold inside the liner. We remove the wet section, install properly supported new flex or hard pipe, and seal with mastic, not tape that will fail next summer.
Plenum and Boot Sealing
The plenum is the distribution box on top of your air handler. If it’s leaking, you’re conditioning your attic. We seal plenum seams and boot connections with duct mastic, then pressure-test to verify the fix. This is standard on every repair we do in Johns Creek, because an unsealed plenum re-wets new flex duct within a season.
Trusted Brands We Service in Johns Creek
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation inside ductwork, Nikro negative-air machines that maintain suction and HEPA filtration during cleaning, and filtration products from Honeywell and Guardsman. We don’t use hardware-store shop vacs. The negative-air method we employ on most Johns Creek jobs pulls debris toward the collection unit rather than blowing it through your home, which matters when we’re dealing with mold-contaminated flex duct. We stock common flex duct sizes, mastic, and support straps so most repairs don’t wait on parts.
Common Air Duct Cleaning Problems We See in Johns Creek Homes
- Attic flex duct sag trapping condensate. In homes built from the 1980s through the 2000s, long flex runs across unconditioned attics develop low points where humidity condenses. The inner liner stains, mold colonizes, and the homeowner smells it every time the blower cycles. A standard cleaning misses this entirely if the duct isn’t replaced and re-supported.
- Disconnected or crushed runs in zoned systems. Large homes in neighborhoods like Medlock Bridge and St. Ives often have three or four HVAC zones with dozens of flex runs. One crushed section behind the air handler can starve an entire zone of return air, making the system run longer, humidity climb higher, and energy bills jump without any obvious cause.
- Plenum and boot leaks re-contaminating new duct. We’ve seen competitors replace wet flex duct and leave the leaky plenum untouched. By the following July, the new run is wet again. Sealing the plenum and boots with mastic is non-negotiable on our repair jobs.
- Overly restrictive filters choking airflow. Johns Creek homeowners often install high-MERV filters without checking whether their system’s blower can handle the static pressure. The reduced airflow raises humidity in the ducts, accelerating the condensation and mold cycle. We check this on every job and recommend the right filter for your specific equipment.
Pricing for Air Duct Cleaning in Johns Creek, GA
Here’s what air duct cleaning costs in the Johns Creek market, based on the homes we actually work in:
| Service | Typical Range |
|---|---|
| Full residential system cleaning (single zone, up to 2,500 sq ft) | $350 – $500 |
| Full residential system cleaning (multi-zone, 3,000 – 6,000+ sq ft) | $550 – $850 |
| Vent cleaning with register inspection (supply and return) | $150 – $250 |
| Localized flex duct repair/replacement with sealing | $200 – $400 |
| Multi-zone duct repair (several runs, plenum work) | $800 – $1,500 |
| Video inspection of duct system | $125 – $200 |
What moves the price: square footage, number of HVAC zones, accessibility of attic or crawlspace duct runs, and whether we find damage requiring repair. We do not quote per-vent pricing, and we do not bait you with a low teaser that balloons once we’re inside. The price is written down before any work starts. Call (361) 326-5060 for a free estimate tailored to your home.
We Also Serve Cities Near Johns Creek
Our Air Duct Cleaning in Johns Creek crews also work in Atlanta, South Fulton, Sandy Springs, and Roswell. Dispatch and scheduling are coordinated from our Atlanta office, with local technicians serving each area. The same written pricing, background-checked uniformed techs, and 365-Day Done Right Promise apply in every city we cover.
Serving Johns Creek, GA - Our Local Coverage Area
We’re based in the Johns Creek area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning in Johns Creek
Because the cleaning addressed the symptom, not the cause. In Johns Creek’s humid subtropical climate, flex duct in unconditioned attics sags and traps condensate; that moisture feeds mold that a rotary brush or vacuum cannot eliminate permanently. We cut out the damaged flex, re-support the new run to eliminate low points, seal the plenum and boots with mastic, and verify the fix. Call (361) 326-5060 if you’re dealing with recurring mold, and we’ll inspect for the sag and condensation source.
Yes. Homes with 3,000 – 6,000+ square feet and multiple HVAC zones have more extensive duct runs, more boot connections, and more opportunities for hidden damage. We use video inspection to locate crushed or disconnected runs that single-zone homes rarely face, and we clean under negative pressure with HEPA filtration to prevent cross-contamination between zones. The approach is more thorough because the systems are more complex. Call (361) 326-5060 for an estimate that accounts for your home’s specific zoning.
We measure static pressure across the system and use a video borescope to inspect runs that show abnormal resistance. In Johns Creek’s older zoned homes, a crushed flex section or disconnected collar behind the air handler often explains why one zone runs hot and humid while others cool normally. We show you the video before quoting repair. Call (361) 326-5060 to schedule an inspection if you’re experiencing uneven cooling.
Most residential systems in Johns Creek handle MERV 8 – 11 without airflow restriction; higher ratings can choke the blower and raise duct humidity, which worsens the condensation problems attic ducts already face. We check your system’s static pressure tolerance during our visit and recommend the highest filtration your blower can handle without degrading performance. Call (361) 326-5060 and we’ll test your system.
Yes, but often for different reasons than in newer homes. Ductwork from this era in Johns Creek is typically flex duct in unconditioned attics, and decades of sag, seal degradation, and summer condensation usually mean repair and sealing matter more than debris removal. We frequently find that the real value is identifying and fixing the moisture and airflow problems that cleaning alone won’t solve. Call (361) 326-5060 for a free estimate that includes inspection for these age-specific failure modes.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Johns Creek since 2004.




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