Duct Fogging & Sanitization
Duct fogging disperses a fine antimicrobial mist throughout your entire duct system, eliminating mold spores, bacteria, allergens, and stubborn odors that standard cleaning can't fully reach.
What We Offer
Even after a thorough duct cleaning, microscopic contaminants can remain on duct surfaces — mold spores embedded in joints, bacteria in hard-to-reach bends, and odor-causing residue clinging to duct walls. Duct fogging solves this. We use a professional fogging machine to disperse an EPA-registered antimicrobial solution as a fine mist that travels through your entire duct system, coating every interior surface and neutralizing biological contaminants on contact.
The fogging solution we use is EPA-registered, non-toxic to humans and pets after application, and specifically formulated for HVAC systems. It eliminates mold spores, bacteria, viruses, and odor-causing organisms without leaving harmful residue. Once the treatment is complete and the system runs for a short period, the air in your home is cleaner and safer than it was before.
Duct fogging is most effective when performed after a professional duct cleaning — the cleaning removes the bulk of physical debris, and the fogging eliminates the biological contaminants that remain. Think of it as the difference between sweeping a floor and disinfecting it. Together, they deliver the deepest possible duct sanitization.
We recommend duct fogging after mold remediation (to kill any remaining spores), post-renovation (construction dust and debris often carry bacteria), for homes with persistent musty or stale odors, for allergy and asthma sufferers who want the cleanest possible air, after water damage or flooding that may have introduced mold into the duct system, and for new homeowners who want a fresh start with their air quality.
What to Expect
Pre-Fogging Assessment
We evaluate your duct system's condition. If ducts haven't been recently cleaned, we may recommend cleaning first to remove bulk debris before fogging for maximum effectiveness.
System Preparation
We seal the system and set up the professional fogging equipment at the air handler or main trunk line to ensure the mist reaches every branch of your ductwork.
Antimicrobial Fogging
The fogging machine disperses a fine antimicrobial mist throughout the entire duct system. The solution coats all interior surfaces — joints, bends, connections, and straight runs — killing biological contaminants on contact.
Ventilation & Verification
We run the system briefly to circulate and ventilate, then verify the treatment is complete. Your home is safe to occupy shortly after treatment, and you'll notice fresher, cleaner air immediately.
Go beyond cleaning — sanitize your entire duct system for truly clean air. Keeping It Cool Heating & Air provides professional duct fogging across Kenner, Metairie, New Orleans, and the Greater New Orleans metro. The deepest clean your ducts can get.
Frequently Asked Questions
What is duct fogging?
Duct fogging is a sanitization process that uses a professional fogging machine to disperse a fine antimicrobial mist throughout your entire duct system. The mist coats all interior surfaces, killing mold spores, bacteria, viruses, and odor-causing organisms that standard cleaning can't fully eliminate.
Is duct fogging safe for my family and pets?
Yes. The antimicrobial solutions we use are EPA-registered and safe for occupied homes after the brief treatment period. We ventilate the system after fogging, and there's no harmful residue left behind. Most families can return to normal activity within 30–60 minutes.
How much does duct fogging cost?
Duct fogging typically costs $200–$500 depending on the size of your duct system. It's most commonly added to a duct cleaning service as an upgrade. We provide clear pricing before any work begins.
Do I need duct cleaning before fogging?
We strongly recommend it. Cleaning removes the physical buildup — dust, debris, pet dander — while fogging kills the biological contaminants that remain on duct surfaces. Fogging without cleaning first is like disinfecting a dirty surface — it helps, but the combination is far more effective.
How often should I have my ducts fogged?
For most homes, fogging every 3–5 years (alongside duct cleaning) is sufficient. Homes with allergy sufferers, mold history, or pets may benefit from more frequent treatment. After major events like water damage or renovation, a one-time fogging is always recommended.
Will duct fogging help with musty odors?
Yes — this is one of the most common reasons homeowners request fogging. Musty or stale odors often come from mold or bacterial growth on duct surfaces. Fogging kills these organisms and neutralizes the odors they produce, rather than just masking them.
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