Is air duct cleaning a scam?
Air duct cleaning is a legitimate service with a defined industry standard behind it. A great deal of the marketing around it is not legitimate. The pattern to watch for is a very low advertised price, a technician who arrives and discovers an urgent reason the price must increase, and a job that amounts to running a shop vacuum a short distance behind a few registers. That is not duct cleaning to the NADCA standard. Three questions separate a real company from that pattern: is the whole system placed under continuous negative pressure, is every supply and return run individually agitated, and is the air handler included.
The short version
- Duct cleaning is legitimate; much of the advertising is not. A headline price low enough to be implausible is the tell.
- Three questions sort any company: continuous negative pressure, every run individually agitated, air handler included.
- Modern air-sweeping tooling does not damage flex duct. The older rotating brush systems did, and that is where the reputation came from.
- Per NADCA, the interval depends on system condition, not a fixed number of years.
- We do not make health claims, and we are not a licensed mold remediator.
- Whole-home cleaning from $499, priced mainly on square footage, quotable by phone.
The short version
Duct cleaning is worth doing when the system needs it. It is not worth doing on a schedule regardless of condition, and it is not a treatment for symptoms. An inspection tells you which situation you are in, which is why we inspect before we clean.
An important disclosure
Refresh Duct Cleaning is not a licensed mold remediator. We clean, restore and treat HVAC systems and ductwork. We do not perform mold remediation on building materials, we do not carry out laboratory or clearance testing, and we do not diagnose health conditions. Where a project involves suspected microbial growth beyond the HVAC system, that work belongs with a licensed mold remediation contractor and we will tell you so rather than take work we are not licensed for.
Common questions
Is air duct cleaning a scam?
The service is real. Much of the advertising is not. The scam pattern is a headline price low enough to be implausible, followed by an on-site discovery that the job costs several times that. Ask whether the system is under continuous negative pressure, whether every run is individually agitated, and whether the air handler, coil, blower and plenums are included. A company doing the work properly answers all three without hedging.
Will duct cleaning damage my flexible ducts?
It can, with the wrong tooling. Older rotating brush systems tear the inner liner of flex duct, and that damage is a large part of why the industry earned a bad name. We use compressed-air whips and air-sweeping tools chosen for the duct material, which clean flex without the contact that tears liners. Tool selection follows the material, which is one of the things established during the inspection.
Will duct cleaning fix low airflow?
It depends entirely on where the restriction is. A heavily fouled blower wheel or evaporator coil genuinely restricts airflow, and cleaning those restores it. But low airflow is just as often an over-restrictive filter, crushed or disconnected flex, undersized ductwork, closed dampers or a failing blower motor — none of which cleaning will fix. The inspection identifies the cause before you spend anything.
How much does air duct cleaning cost?
Whole-home air duct cleaning starts at $499. The main driver is the square footage of the home, then the number of HVAC systems and the condition of the equipment. We can give you a price over the phone from those details, and we confirm it against what we find when we arrive. What changes the price.
How often should air ducts be cleaned?
NADCA's position is that the interval depends on the condition of the system rather than a fixed number of years. Things that shorten it: pets, renovation work, high occupancy, a system that has never been cleaned, visible debris at the registers, or a musty smell when the system starts. In Northeast Florida, humidity and near year-round run time mean systems here generally reach that condition sooner than in a dry climate.
What makes your equipment different from other companies?
We run a truck-mounted vacuum system rated at roughly 15,000 CFM. Most duct cleaning companies work from portable units, which cannot generate the collection airflow that source removal requires across an entire system. More on the equipment and why it matters.
Do you clean the air handler too, or just the ducts?
The air handler is included. Cleaning ducts and leaving a fouled blower wheel and coil in place means the system re-contaminates itself the moment it runs. Any quote covering ducts only is not cleaning your system.
How long does it take?
Most single-system homes take three to six hours depending on the number of runs, attic access and the condition of the equipment. Multi-system properties take proportionally longer, and we give you an expected window when the job is scoped.
Will duct cleaning help my allergies?
We will not tell you it will. Removing accumulated particulate from a system that has it is a sensible thing to do, and a cleaner system with better-sealed filtration circulates less of what is in it. Whether that changes a specific person's symptoms is a medical question, and any company answering it confidently is selling rather than informing.
Will it lower my electric bill?
Modestly at best from cleaning alone. A badly fouled coil or blower does restrict airflow and cost efficiency, and cleaning those helps. The larger efficiency loss in most Florida homes is duct leakage, which is a sealing problem rather than a cleaning one.
Do I need to be home?
Someone over 18 should be there for the walkthrough at the start and the end. Not for the whole job.
What about my pets?
Secure them away from the work area. Tell us in advance if you have birds, which are unusually sensitive to airborne particulate and to any treatment products.
Do new homes need duct cleaning?
Often yes, and it surprises people. Duct systems are open during construction and air handlers frequently run before a build is finished, so drywall dust and construction debris end up in the ductwork and on the coil. See post-construction cleaning.
Should I clean or seal my ducts?
They solve different problems. Cleaning removes debris; sealing stops conditioned air escaping and unconditioned air entering. Many Northeast Florida homes with attic ductwork benefit more from sealing.
My vents are sweating and my ceiling is stained. Is that a duct problem?
Usually yes, and usually a boot sealing and insulation problem rather than a cleaning one. Warm humid attic air meeting a cold surface produces condensation. Cleaning will not change that.
What if there is suspect microbial growth in my ducts?
Growth in a duct system nearly always points to a moisture source that has to be corrected, or it returns. Treatment sprayed over growth is not a solution. We clean and restore HVAC systems and ductwork, and where a project extends into building materials we will tell you that a licensed mold remediator is the right party for that portion of the work.
How often should a dryer vent be cleaned?
Annually for most households, more often with heavy use or a long duct run. Commercial and multi-family equipment needs a shorter cycle.
Are you licensed and insured?
Yes. Florida certified air conditioning contractor license CAC1824362, fully insured, with a NADCA-certified Air Systems Cleaning Specialist on staff. We are also an Aeroseal certified contractor and a BBB accredited business.
Sources and standards
Where this page relies on published guidance, here is what it relies on.
- NADCA ACR Standard — The industry standard defining HVAC system cleaning methodology.
- US EPA — Should You Have the Air Ducts in Your Home Cleaned? — Federal guidance on when duct cleaning is and is not warranted.
- US DOE — Minimizing Energy Losses in Ducts — Department of Energy guidance on duct sealing and insulation.
- US CPSC — Dryer Fire Safety — Consumer Product Safety Commission on dryer exhaust fire risk.
