Whole-home duct cleaning
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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.
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AfterHow Much Does Air Quality & Sanitizing Cost in Marietta?
Air quality and sanitizing services in Marietta, GA typically run between $295 and $780 for a standard single-family home in 2026. Most homeowners pay around $450 for a full HVAC system sanitization that includes coil cleaning, blower treatment, and antimicrobial fogging. Smaller jobs, like a single-room UV light installation, start near $295, while whole-home sanitizing paired with duct cleaning on larger Cobb County properties can reach $780 or more.
Air Quality & Sanitizing Cost Breakdown (2026)
We quote air quality work with a written price before anything gets touched. No surprises at the door. Here’s what the Marietta market actually looks like in 2026, based on jobs we’ve done and quotes we’ve seen across the county.
| Service | Typical Marietta Price Range | What It Includes |
|---|---|---|
| Whole-home HVAC sanitizing | $425 – $680 | Evaporator coil cleaning, blower housing and wheel treatment, supply plenum sanitizing, antimicrobial fogging through duct system |
| Air duct sanitizing (no full cleaning) | $295 – $450 | EPA-registered antimicrobial fog applied through ductwork, return and supply registers wiped and treated |
| Full duct cleaning + sanitizing | $550 – $980 | Rotobrush mechanical agitation, HEPA vacuum extraction, then sanitizing fog. Price scales with home size and number of returns |
| Coil cleaning only | $180 – $320 | Evaporator coil pulled or accessed in place, cleaned with professional-grade coil cleaner, rinsed, and treated |
| UV-C light installation | $390 – $720 | Honeywell UV-C lamp mounted at the coil, wired to run continuously. Price varies by unit size and access |
| Whole-home air purifier install | $650 – $1,150 | Aprilaire media-based purifier or electronic air cleaner installed at the air handler. Includes electrical hookup |
These are real numbers for Marietta and the surrounding Cobb County area. The spread exists because a 1,400-square-foot ranch in East Cobb goes faster and costs less than a 4,500-square-foot two-zone home in West Cobb near Kennesaw Mountain. System access matters too. Attic air handlers in older Marietta homes with tight clearances add labor time.
What Affects Air Quality & Sanitizing Pricing in Marietta
Every home is different, and the price moves for reasons you can see. Here are the factors that shift your quote.
- Home square footage and duct layout. More square footage means more duct linear footage and more supply registers to treat. A 1,200-square-foot condo in downtown Marietta is not the same job as a 3,200-square-foot house in Indian Hills.
- Access to the air handler and coil. Crawlspace units, attic installs with low clearance, or closets with tight framing all add labor time. Marietta’s older housing stock, especially in the historic districts around the Square, often has air handlers jammed into spaces that slow the work down.
- Type of sanitizing method. Fogging is standard. UV-C installation costs more because you’re buying and installing equipment, not just treating surfaces. Media-based purifiers cost more still.
- Mold, mildew, or heavy biological buildup. North Georgia’s humidity from May through September means condensation sits on coils. If we find heavy microbial growth during the job, treatment takes longer and may require additional passes.
- Number of HVAC systems. A single system is the baseline. Two systems, common in larger Marietta homes and some finished-basement layouts, roughly doubles the coil and blower portion of the work.
- Duct condition and recent cleaning history. Systems that haven’t been cleaned in years need more prep before sanitizing makes sense. Sanitizing over heavy debris is wasted effort, so a combined duct cleaning plus sanitizing often gets recommended, which changes the final number.
How to Save on Air Quality & Sanitizing
You can keep your air quality investment lean without cutting corners. A few things we tell our Marietta neighbors:
- Bundle sanitizing with duct cleaning. The marginal cost of adding sanitizing to a cleaning job is lower than scheduling it as a standalone service. You’re already paying for the equipment and the access window.
- Change your filter on schedule. A plugged filter strains the blower and coats the coil faster. MERV 8 to MERV 11 filters changed every 60 to 90 days keep buildup down, which makes any sanitizing treatment last longer.
- Get your coil cleaned before peak humidity season. Book in April or early May. Once Marietta hits the heavy July humidity, coils are already wet and breeding. Cleaning early means less treatment needed and a longer clean window through the summer.
- Ask about grouping multiple air quality services. UV-C installation plus coil cleaning done in one visit costs less than two separate service calls. Our written price quote shows the difference up front.
We give free estimates by phone. Tell us the square footage, number of systems, and whether you’ve had recent duct cleaning, and we’ll give you a realistic range right then. Call (762) 216-4075 and you’ll get a live person, not a call center.
Is Air Quality & Sanitizing Worth the Cost in Marietta?
For most Marietta homeowners, yes, and here’s the honest math. The coil and blower in your air handler sit in a dark, damp environment for months out of the year. Cobb County’s climate basically hands mold and bacteria a breeding ground from late spring through early fall. A $425 to $680 whole-home sanitizing treatment removes what’s growing there and leaves a residual antimicrobial barrier that slows regrowth. If anyone in the home has allergies, asthma, or recurring sinus issues, the return is usually noticeable within the first few weeks.
What you’re buying is not just cleaner air. You’re also protecting system efficiency. A coated evaporator coil forces your compressor to work harder, which means higher Georgia Power bills and a shorter equipment lifespan. A $320 coil cleaning that keeps a $6,000 heat pump running efficiently for an extra three to four years is not a luxury line item. It’s maintenance math that works in your favor.
How Our Air Quality & Sanitizing Service Works in Marietta
Here’s exactly what happens when you book with Cardinal Air Duct Marietta, run through The Relay Standard. You schedule a time. A live person answers the phone 24/7, so there’s no voicemail tag or online form that disappears into a queue.
On the day of service, you get a trackable arrival window. You’ll see the technician’s location on your phone as they make their way to your home. Before any work starts, you get a written price. Not a verbal ballpark. A written price, in your hand, before one piece of equipment comes off the truck.
The technician arrives in uniform, background-checked, with their name shared before they knock. We run professional-grade gear: Rotobrush rotary brush systems for mechanical agitation, Nikro HEPA-filtered vacuums for negative-pressure extraction, and Abatement Technologies containment units when the job calls for it. Negative-pressure extraction means the loosened debris goes straight into the vacuum, not back into your living room.
After the sanitizing treatment, you get before-and-after photos so you can see what came off the coil and what the inside of the plenum looked like. Your invoice arrives as a digital link you can pay from your phone. The entire experience is built to be phone-native, from first call to final receipt.
The 365-Day Done Right Promise
Every air quality and sanitizing job we do in Marietta carries the 365-Day Done Right Promise. If the work isn’t right within 365 days, we return and correct it at no charge. This applies to every job, not select ones. It’s the longest-standing satisfaction window in the trade, and it’s written into what we do.
We also put a written guarantee on every repair we make. If a repair fails, the second visit is free. No pro-rating, no fine print, no argument about whose fault it was. The promise exists because Omar Haddad, who runs Cardinal Air Duct Marietta, operates on a single standard: total visibility from booking to invoice. Part of the Relay Home Co. family, founded 2005, the standard applies at every independently owned location.
What to Look for in an Air Quality Contractor in Marietta
Not every company selling air sanitizing in Cobb County is doing the same work. Here’s what separates a real treatment from a truck-mounted shop-vac shortcut.
- Written pricing before work starts. If a company won’t hand you a number in writing before they start, walk away. Air quality work has no reason to be vague.
- Equipment you can name. Ask if they use Rotobrush, Nikro, or Abatement Technologies. If the answer is “we have professional equipment” without specifics, that’s a red flag. Real professional gear has brand names.
- HEPA filtration, not just agitation. Brushing without HEPA-level extraction kicks debris into your air stream. Negative-pressure extraction with a HEPA vacuum is the difference between cleaning and just stirring.
- A written guarantee that lasts. A 30-day warranty on sanitizing is not much. The biological regrowth timeline means you want something measured in months, not weeks.
- A live person when you call. Air quality emergencies, like a mold discovery during a renovation, don’t wait for next-business-day callbacks. If you’re calling at 9 PM and getting an answering service, think about what happens if something goes wrong on your job.
Common Misconceptions About Air Quality & Sanitizing Costs
There’s a lot of bad pricing information floating around. Let’s clear up what we hear most in the Marietta market.
“Sanitizing is just spraying some aerosol.”
No. Proper treatment means accessing the coil, cleaning it, treating the blower housing, and fogging the full duct system with an EPA-registered antimicrobial. The labor and material costs are real. A $99 “whole-home sanitizing” special means someone’s spending 15 minutes with a can of spray and not much else.
“You don’t need coil cleaning if the air feels cold.”
Your system can be pulling 22 amps because of a two-inch mat of bio-slime on the coil and still push cold air. The air feels cold right up until the compressor fails. The price of a coil cleaning is a fraction of a compressor replacement.
“UV lights are a scam.”
A correctly installed UV-C lamp mounted at the coil prevents biological growth on the surface it’s pointed at. It does not clean your whole house. The results depend on proper placement and lamp replacement every 12 to 18 months. Cheap UV installs with bad placement are a scam. Done correctly, they’re a legitimate part of an air quality plan.
“Duct sanitizing is a one-time fix.”
Sanitizing treats what’s there today. Your HVAC system continues to pull Marietta air through it, and that air carries humidity and particulates. Sanitizing buys you clean time and removes existing contamination. It’s not a permanent force field. Maintenance and filter changes extend the results.
FAQs – Air Quality & Sanitizing Cost in Marietta
How much does whole-home air duct sanitizing cost in Marietta?
Expect to pay $295 to $450 for sanitizing alone, or $550 to $980 for full duct cleaning plus sanitizing in a typical single-family Marietta home. The exact number depends on home size, system access, and whether the sanitizing is a standalone service or bundled with cleaning. Call (762) 216-4075 for a free, written quote with no obligation.
Is it cheaper to sanitize or replace ductwork in Marietta?
Sanitizing is dramatically cheaper. A full sanitizing treatment runs $295 to $680. Replacing ductwork in a typical Marietta home costs $3,000 to $7,000 or more depending on accessibility. Replacement is only warranted when ducts are physically damaged, collapsed, or contaminated beyond treatment. Sanitizing addresses biological growth and odor at a fraction of the cost.
How much does UV light installation cost in Marietta?
UV-C light installation for a central HVAC system in Marietta runs $390 to $720 installed. The price covers a Honeywell or equivalent UV-C lamp, mounting at the evaporator coil, and electrical hookup. Annual lamp replacement runs $80 to $150. Call (762) 216-4075 and we’ll quote your system directly.
Can you do air quality sanitizing the same day in Marietta?
Yes, in most cases. We keep our Marietta schedule flexible for same-day sanitizing and emergency calls, especially during peak humidity months when coil issues spike. A live person answers the phone 24/7, so you’ll know immediately whether a technician can reach your home today. Call (762) 216-4075 to check current availability.
How long does air quality sanitizing last in a Marietta home?
A professional sanitizing treatment using an EPA-registered antimicrobial typically keeps biological growth controlled for 6 to 12 months. Marietta’s humidity means you’ll want to re-evaluate annually, ideally before the summer humidity arrives. Our 365-Day Done Right Promise covers every sanitizing job for a full year. If the work isn’t right, we return at no charge.
Ready to Get a Real Price?
Stop reading about ranges and get your number. Call (762) 216-4075 now and you’ll speak with a live person who can price your Marietta home’s air quality service. We’ll ask about square footage, number of systems, and what issues you’re noticing. Then we’ll give you a realistic written quote before any work starts. If you’d rather see it in writing first, we can send the quote digitally to your phone. Either way, the price is the price. The Relay Standard means you get a live trackable arrival window, background-checked uniformed technicians, before-and-after photos, and a digital invoice you can pay with one tap. That’s Air Quality & Sanitizing in Marietta the Cardinal way.
Written by Omar Haddad, Owner at Cardinal Air Duct Marietta, serving Marietta and Cobb County since 2005.
Pricing reflects the Marietta market as of 2026. Cardinal Air Duct Marietta offers free estimates – call (762) 216-4075.
What Our Customers Say
"Cleaning plus HVAC coil clean. Tech texted when he was ten minutes away. No surprises on the price."
- Evan S."Paid by text link and got a receipt right away. Hassle free."
- Nina P."Booked a slot in the app, got a reminder text, and watched the crew's van on the map as it came. Cleaned all the vents and the main trunk. Easy from start to finish."
- Rob J.