A musty smell that is worst when the AC runs usually means mold or mildew growing in the air system. Bactronix treats it in two jobs, usually on one visit: the whole home at $0.30 per heated square foot ($200 minimum), and the vents at $50 each, or from $399 on their own. Every job carries a 12-month written guarantee. We serve Charleston, Summerville, Cane Bay and nearby.
Veteran owned. Licensed and insured. EPA-registered product. 12-month written guarantee.
Not sure what you need?
Skip the test if you can smell or see the mold, and treat it. If the smell is musty and comes with the air, start with the air duct cleaning and treatment, which cleans each vent and return and then treats it, and add the whole home, because spores travel on the air. If the smell sits in the rooms, or it is a lived-in, pet or smoke smell, start with the whole-home disinfection, which sprays every surface plus the duct work and the drain pan, and add the vent cleaning if the vents are dirty.
Start with the vents A smell that rides the air is growing in the duct work. We scrub each vent and return with a rotary brush, clean the registers, the coil and the outside of the air handler, then treat them. $50 a vent, from $399 on its own. Spores travel on the air, so most people add the whole-home disinfection on the same visit, and then the vents carry no minimum. 12-month written guarantee. See the air duct cleaning.
Start with the whole home A smell that sits in the rooms, or came with the last people, is on the surfaces, not only in the air. Whole-home disinfection sprays every surface in the house, closets included, plus the duct work and the drain pan: $0.30 per heated square foot, $200 minimum, about 30 to 75 minutes, and you can stay home. Dust or growth in the vents needs cleaning first, so add the air duct cleaning at $50 each on the same visit if the vents are dirty. 12-month written guarantee. See the whole-home disinfection.
We look first Mold you can see gets wiped off, not sprayed over. Every one is different, so we look before we price it, and Greg puts the price in writing before any work starts. See how the treatment works.
Fix the water first Mold is a water problem first. Wet material grows again, so the leak, the flood or the drain line gets fixed before anything is sprayed. Once it is dry we treat it, and if something is still wet we say so before we start. See mold after water damage.
Two ways to be sure If you can smell it or see it, the CDC says you do not need to know the type, so most people skip the test and treat. To be sure anyway: while we are at the house we can swab a surface and read it on a hand-held meter, or send samples to a lab, $350 for two and $450 for four. See mold testing.
How a visit works
- We show up in the white van. The company name and the phone number are on the side. We come in the window you picked.
- We find the moisture. Mold is a water problem first. In a Lowcountry house it is usually a cold duct sweating in humid air, or a drain line that stopped draining. If something is wet, we tell you what is wet.
- We clean what needs cleaning. Growth you can see is wiped off before anything is sprayed. When the vent cleaning is on the job, each vent and return is scrubbed with a rotary brush, and the registers, the coil and the outside of the air handler are cleaned too.
- We spray. BactroKill Plus, an EPA-registered product (EPA Reg. No. 82972-1-90746), goes on with an electrostatic sprayer: every surface in the house, closets included, plus the duct work and the drain pan. The charge makes the droplets wrap around a surface instead of landing on one side of it. Bactronix calls that process Bactronizing.
- You get the guarantee in writing. It goes on the invoice. If what we treated comes back inside 12 months, we come back and re-treat it. No trip charge. You pay on the day.
A whole-home disinfection takes about 30 minutes at 1,500 square feet, 45 at 2,500 and 75 at 3,500. You can stay in the house. Keep people and pets out of a room while we spray it. It is yours again 15 minutes later.
This is treatment, not structural remediation, and it does not fix a leak. If we find water still coming in, you hear it from us before we spray, because new water grows new mold and you would be paying us to treat a surface that is about to get wet again.
What customers say on Google
Greg’s Google profile on the Grand Strand shows 4.8 stars from 34 reviews.
We recently purchased an older home and quickly noticed it had that stale, lived-in smell that can come with a house that’s been occupied for years. The air felt fresher, the home smelled cleaner.
A Google review from one of Greg’s Grand Strand customers, August 2026.
Where we work
Bactronix of the Lowcountry is owned by Greg Busang. Beyond the three towns below, we cover Nexton, Carnes Crossroads, Goose Creek and Moncks Corner.
Other services
- Mold testing, $350 for two lab samples, $450 for four
- Plain air duct cleaning removes dust, and it does not replace treatment
- Is air duct cleaning worth it?