What to expect from a NADCA-standard air duct cleaning

Before any equipment comes out, a technician assesses your whole duct system, so you know the scope of the job before it starts. The cleaning itself follows the NADCA (National Air Duct Cleaners Association) standard for professional duct cleaning. Most air duct cleaning jobs are completed in one to three hours, depending on the size of the system. The same process applies to homes and businesses.

What happens during the assessment?

The assessment decides everything after it. A technician looks at the whole duct system before any equipment is deployed, so the scope is clear before the work starts, not after.

You get two things from it: a clear scope, meaning which parts of the system are being cleaned and roughly how long it will take, and an honest read on whether cleaning is the right service at all. The quote that follows is free and there is no obligation.

What does “NADCA standard” actually mean for your home?

NADCA is the National Air Duct Cleaners Association, the industry association for professional duct cleaning, and it publishes the standard for how that work should be done. Ecovent follows that standard. We are not going to quote clause numbers; the plain meaning is that there is a written, industry-wide way to clean a duct system properly, and that is the method we work to.

In practice, that means consistency: the system is assessed before it is touched, the scope is agreed before the work starts, and the job is done the same way in a condo in Largo or an office in New Port Richey.

How long does it take?

Most air duct cleaning jobs take one to three hours. The variable is system size: a small home with a handful of registers sits at the short end, and a larger house or a commercial space with more duct runs sits at the long end. The assessment gives you a realistic estimate for your system.

The range exists because systems differ, not because anyone skips steps. If you also want your dryer vent cleaned, that is a separate service, typically under an hour, so mention it when you book.

How often should ducts be cleaned in Florida?

Every three to five years is the general recommendation, and sooner if you have pets, anyone in the house with allergies, or visible dust coming from the registers. Pet hair ends up in the returns, allergies that flare when the AC runs point to what is circulating, and dust on the register faces is also inside the duct.

The Florida angle is simple. The AC runs most of the year here, so far more air moves through the ducts than in a milder climate, and Gulf Coast humidity does not help. If you cannot remember when the ducts were last cleaned, the assessment will tell you what state they are in.

When is cleaning not enough?

Cleaning removes what has built up inside a duct. It cannot fix a duct that is failing. Three things turn a cleaning job into a replacement conversation: leaks at the joints or seams, runs that have been crushed or collapsed, and flex duct that has deteriorated until the liner is coming apart. A leaking or collapsed duct pushes conditioned air into the attic and pulls attic air back into the system. No amount of cleaning changes that.

Ductwork that is leaking, crushed or falling apart does not get better by being cleaned, and we would rather say so at the start than bill you for work that will not hold.

Duct replacement is a different job: a full inspection, removal of the failing ductwork, and installation of new duct. It may take a full day or more. The assessment on a cleaning visit is where you find out, and you will be told what was found and why before anything is decided.

How should I prepare?

Not much is needed. Clear a path to every register and return grille, and move anything sitting on a floor register. Make sure the technician can reach the air handler and, if the ducts run through the attic, the attic access. Keep pets in a closed room while the crew is in and out. If you have noticed something specific, like a room that never cools or a musty smell when the AC kicks on, say so at the start.

Frequently asked questions

Do you clean ducts in businesses as well as homes?

Yes. Ecovent serves homes and businesses across Pinellas and Pasco counties, and the process is the same: a full assessment before any equipment comes out, then a cleaning to the NADCA standard. Commercial systems are usually larger, so expect the longer end of the one-to-three-hour range.

Will cleaning the ducts fix weak airflow?

Sometimes. If the low airflow comes from buildup inside the ducts, cleaning helps. If it comes from a crushed run, a disconnected joint or collapsed flex duct, cleaning will not restore it and duct replacement is the fix. The assessment tells you which case you are in before you pay for the wrong service.

How do I know what it will cost before you start?

You get a free, no-obligation quote after the assessment, for the scope the technician has just walked you through; the assessment is always part of the visit. What moves the price is the size of the system, the number of runs and registers, and how accessible the ductwork is. Ask for a quote for your system.

For the full service details, see the air duct cleaning page; the duct replacement page explains what happens when cleaning is not the answer. To book an assessment and get a free quote for a home or business in Pinellas or Pasco County, contact Ecovent.