Air Duct Cleaning FAQ
Straight Answers About Cleaner Air
Fifteen of the questions homeowners, property managers, and facility teams ask most before booking air duct or dryer vent service.
How often should air ducts be cleaned?
Most homes benefit from a professional inspection every 3 to 5 years. You may want service sooner if you have pets, smokers, recent remodeling dust, visible debris at registers, or unexplained indoor dust buildup.
How much does air duct cleaning cost?
Cost depends on vent count, system size, accessibility, contamination level, and whether blower or coil cleaning is included. The right way to quote the job is with a clear scope, not a vague flat number that changes after the crew arrives.
What does NADCA mean in air duct cleaning?
NADCA is the National Air Duct Cleaners Association. When a company references NADCA, the important part is whether they follow source-removal methods, inspect the HVAC system properly, and document the work instead of offering a superficial vent-only cleaning.
Can duct cleaning help with allergies?
It can reduce one source of airborne dust and debris when contaminants inside the system are being circulated through the property. It is not a cure for allergies, but it can support better indoor air quality along with filtration, humidity control, and HVAC maintenance.
What if there is mold in the ductwork?
Visible mold should be treated as a moisture problem first and a cleaning problem second. A reputable contractor should explain whether the issue calls for cleaning, component replacement, or separate mold remediation, and should identify the source of the moisture so it does not return.
Is dryer vent cleaning different from air duct cleaning?
Yes. Dryer vent cleaning removes lint and blockages from the dryer exhaust line to improve dryer performance and reduce fire risk. Air duct cleaning focuses on the HVAC supply and return system that moves heated and cooled air through the building.
What is the difference between commercial and residential duct cleaning?
Residential projects usually center on one home HVAC system. Commercial work often involves larger equipment, multiple zones, stricter access rules, off-hours scheduling, and documentation for building owners, tenants, or facilities teams.
How long does the duct cleaning process take?
A typical residential visit often takes 2 to 5 hours, depending on the size of the home and the system layout. Larger homes, multi-unit properties, and commercial sites take longer, especially when several air handlers or add-on services are involved.
Do you clean the full HVAC system or only the vents?
A proper cleaning should cover the full airflow path: supply ducts, return ducts, registers, grilles, and accessible HVAC components tied to system performance. Cleaning only visible vents is not the same thing as full system duct cleaning.
Will air duct cleaning leave dust or debris in the house?
It should not if the crew uses containment, negative air equipment, and floor protection correctly. The goal is to capture loosened debris during removal, not release it into living areas.
Do I need to be home during the service?
Usually no, but someone may need to provide access at the start and end of the appointment. Technicians typically need clear access to vents, the air handler or furnace area, and the dryer location if dryer vent cleaning is bundled in.
Are sanitizers or deodorizing treatments always necessary?
No. Those treatments should be recommended only when there is a specific reason, such as odor concerns or a contamination event. They should not be pitched as a mandatory default add-on for every standard duct cleaning job.
Is air duct cleaning covered by insurance?
Routine maintenance is usually not covered. Insurance may apply when cleaning is part of a covered loss such as fire, smoke, or certain water events, but that depends on the policy and the cause of the contamination.
Do air duct cleaning companies offer a warranty?
Many offer a workmanship guarantee, but terms vary. Ask what is covered, how long the coverage lasts, and whether the company provides before-and-after photos or inspection notes so the completed scope is documented.
How do I know if a quote is legitimate?
Look for a written scope, transparent vent or system counts, proof of insurance, and a clear explanation of the cleaning method. Extremely low teaser pricing is often a sign that the invoice will increase significantly once the crew is on site.
Still Comparing Providers?
Ask for the scope before you ask for the price.
That one step filters out most low-quality duct cleaning offers. If you want a written estimate for air ducts, dryer vents, or commercial service, use the contact page or call directly.