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.
Styles & brands we work with
See the difference
Before
After
Before
After
Before
AfterCommercial Duct Cleaning in Alpharetta, GA
Commercial duct cleaning in Alpharetta typically runs between $0.35 and $0.65 per square foot, with most office and retail spaces under 10,000 square feet landing in the $1,900 to $4,800 range all-in. The job usually takes one to two days depending on the number of rooftop units and how long it’s been since the last cleaning. Hollis Air Duct Alpharetta handles commercial work with the same written-price, written-guarantee standard we apply to Air Duct Cleaning in Alpharetta homes, using negative-air machines and rotary brush systems built for commercial duct runs. Call (762) 769-7145 and we’ll give you a firm number before any work starts.
Commercial buildings in Alpharetta carry heavier air-loads than homes do. Office parks off Windward Parkway, medical suites near Northside Hospital Alpharetta, restaurants on Main Street, church buildings off Rucker Road: every one of them pushes conditioned air through ductwork that collects dust, construction debris, and biological growth faster than residential duct systems. We’ve been doing this since 2004 as part of the Garrison Partners family, and the standard hasn’t changed: arrive inside the quoted window, price it in writing, do the job by the book, leave the site clean.
When You Need Commercial Duct Cleaning
Most commercial property managers in Alpharetta call us because they notice something specific, not because a calendar told them to. Here’s what usually triggers the call:
- Visible dust buildup on supply diffusers or ceiling tiles. If you’re wiping dark streaks off diffusers every month, the duct interior is sending particulates into your occupied space. We see this constantly in Alpharetta buildings near Highway 400 where pollen loads and construction dust combine.
- Occupant complaints about stale air or allergy symptoms. When three different employees in the same suite report the same sinus problems, the HVAC system is usually the common denominator. Duct interiors collect what the filters miss, and Georgia humidity gives it a chance to grow.
- Post-construction or renovation debris. Alpharetta’s commercial buildout pace means drywall dust, sawdust, and insulation fibers end up in ductwork during tenant improvements. That debris keeps circulating until someone removes it mechanically.
- Uneven airflow between offices or floors. Duct dampers clogged with debris don’t balance. If the corner office is always stuffy while the conference room freezes, restricted duct runs are often the cause.
- Musty odor when the HVAC system cycles on. In Alpharetta’s humid seasons, condensation inside ductwork supports microbial growth. The negative-air method pulls that contaminated air out under controlled pressure rather than blowing it around the building.
- Rising energy costs without a corresponding change in occupancy. Restricted airflow makes rooftop units work harder. A duct cleaning that restores design airflow often pays for itself in reduced run-times within a heating and cooling season.
If you manage a property in Alpharetta and any of this sounds familiar, call (762) 769-7145. We’ll tell you straight whether duct cleaning addresses the problem, and if it won’t, we’ll say so.
Our Commercial Duct Cleaning Process
Commercial duct cleaning is not a full system cleaning scaled up with a bigger vacuum. It requires different airflow volumes, different access points, and technicians who understand rooftop unit sequencing and commercial duct design. Here’s exactly how we handle it:
- Site walk and system mapping. We identify every air handler, every trunk line, every branch run, and every accessible access point. We note square footage, duct material, and any sections that need access doors cut. The price you get is based on this walk, in writing, before equipment enters the building.
- Containment and pressure control. We connect a negative-air machine from Nikro or Abatement Technologies to the duct system. This puts the ductwork under negative pressure, which means every particle we dislodge gets pulled toward the collection point instead of drifting into occupied offices.
- Mechanical agitation of duct interiors. We run a Rotobrush rotary brush system through the supply and return runs. The rotating brush knocks dust, debris, and biological growth off the duct walls while the negative-air machine captures it downstream. For larger commercial mains, we use pneumatic agitation tools rated for the diameter and airflow volume.
- Component cleaning. We remove and clean supply diffusers, return grilles, and access panels. We inspect the evaporator coil, blower housing, and condensate pan for buildup. If the coil is fouled, we clean it, because a clean duct system moving air across a dirty coil is half a job.
- Filtration check and post-clean verification. We visually verify the duct interior at representative access points and confirm airflow at multiple diffusers matches pre-clean readings or improves. On buildings running Air Duct Cleaning filtration upgrades, we’ll note whether existing filters from brands like Honeywell or Aprilaire are doing their job.
- Site restoration. Every access point gets sealed, every panel reinstalled, every diffuser back in place. We haul off all debris and leave the mechanical room cleaner than we found it.
Commercial Duct Cleaning Pricing in Alpharetta
Commercial duct cleaning in Alpharetta depends mostly on three things: total ducted square footage, the number of rooftop units or air handlers, and how long it’s been since the last cleaning. Heavily soiled systems take longer and cost more. Here’s what we typically see:
| Building Type | Typical Ducted Sq Ft | Price Range | Typical Duration |
|---|---|---|---|
| Small office suite | 1,500 – 3,500 | $850 – $1,900 | Half day |
| Mid-size office / retail | 3,500 – 8,000 | $1,900 – $3,800 | 1 day |
| Large office floor | 8,000 – 20,000 | $3,800 – $7,500 | 1 – 2 days |
| Restaurant or medical suite | Varies by hood and exhaust load | $1,500 – $5,500 | 1 – 2 days |
| Church or community building | 6,000 – 15,000 | $2,800 – $6,200 | 1 – 2 days |
Every quote is written before the job starts. The number on your quote is the number on your invoice unless you add scope. No per-vent add-ons discovered at the door, no “your system is worse than we thought” adjustments. Free estimates on commercial work in Alpharetta are standard, and we’ll walk the property before quoting so we’re pricing the actual system, not a guess. Call (762) 769-7145 to schedule a site walk.
FAQs – Commercial Duct Cleaning
How much does commercial duct cleaning cost in Alpharetta?
Commercial duct cleaning in Alpharetta typically costs $0.35 to $0.65 per square foot, with a 5,000-square-foot office falling between roughly $1,800 and $3,300. The final number depends on access difficulty, the number of rooftop units, and how much buildup has accumulated. Call (762) 769-7145 for a written quote after a site walk, and the price won’t move at the door.
Can you clean commercial ducts on nights or weekends?
Yes. We schedule commercial work in Alpharetta outside business hours when needed, so your offices stay operational and your tenants never hear a negative-air machine running during the workday. Doctors’ offices, restaurants, and buildings with open floor plans are the usual reasons, and we’ll lock the schedule before the quote goes out.
How often should commercial ductwork be cleaned?
Commercial buildings in Alpharetta should have ductwork inspected and cleaned every 2 to 4 years, more often for medical facilities, restaurants, or buildings that recently went through tenant improvements. Georgia’s humidity accelerates microbial growth, and Alpharetta’s commercial growth means construction dust ends up in duct systems all year long. If you inherited a property with no cleaning records, assume it’s overdue.
Does commercial duct cleaning include the rooftop units?
We inspect the rooftop unit, and we clean the blower housing, evaporator coil, and return duct components as part of the job when the technician’s inspection finds buildup. Full mechanical repair of HVAC equipment is outside our scope, but we’ll tell you in plain terms what we saw and whether a licensed HVAC contractor should address it. Call (762) 769-7145 with your building’s specs and we’ll walk you through what’s included.
Written by Roy Castellanos, Owner at Hollis Air Duct Alpharetta, serving Alpharetta.