Every 3 to 5 years for most homes; sooner with pets, allergies, a recent renovation or a move. In South Florida, it is worth looking more often than the minimum, and a camera look inside shows you whether your ducts are due.
How often should air ducts be cleaned in South Florida?
Every 3 to 5 years for most homes; sooner with pets, allergies, a recent renovation or a move. Pets add hair and dander, allergies make buildup matter more, and a renovation or a move is a natural moment to start fresh.
The EPA says ducts should be cleaned as needed, and NADCA, the trade association for duct cleaners, recommends inspecting the system regularly. Between cleanings, you can change your filter on schedule, check the condensate drain, and ask for a camera look inside, wherever your system allows it.
South Florida conditions make inspections more useful
Three local conditions make an inspection more useful here than in many other places.
- Long air conditioning seasons. Air conditioning runs for much of the year in Miami-Dade, Broward, and Palm Beach Counties. Your filter and ducts handle air for many months in a row.
- Humidity. The EPA says controlling moisture is the most effective way to prevent biological growth in ducts, and it names condensation on cooling coils as a major factor. It also advises keeping indoor relative humidity below 60 percent, ideally between 30 and 50 percent.
- Age and location of the ducts. Many homes built in the 1970s and 1980s still have original ductwork, often in a hot attic. The EPA advises that ducts in unconditioned spaces such as attics be sealed and insulated to help prevent condensation.
Signs that ducts need cleaning
The EPA and NADCA both describe conditions that point to cleaning. Common ones include:
- Substantial visible mold growth inside hard-surface ducts or on other parts of the system. We check for signs of mold and show you what we find; a mold professional confirms it.
- Pests, such as rodents or insects, or their droppings.
- Ducts so clogged with dust and debris that particles come out of the supply registers.
- A musty or unusual odor that traces back to the system.
- Water, fire, or smoke damage to the system.
- Construction dust after a renovation.
A dusty return grille by itself is not one of them. The EPA says it is normal for return registers to collect dust, and that this does not show heavy contamination inside the ducts.
An inspection and a cleaning are different jobs
An inspection is a look. A technician checks the filter, the coil area, and the ducts, and records what is there.
A cleaning removes what has settled in the ducts: dust, allergens, pet hair, debris and bacteria. The EPA says a provider should:
- Use vacuum equipment that exhausts particles outside the home, or HEPA vacuum equipment if it exhausts inside.
- Protect your carpet and furnishings.
- Seal and re-insulate any access holes made in the ducts.
Ask how your provider handles each of these.
The limits of duct cleaning
Cleaning is not a health treatment. The EPA says duct cleaning has never been shown to prevent health problems, and that there is no evidence that a light amount of household dust in ducts is a risk to your health. It also says little evidence exists that cleaning only the ducts improves system efficiency. We do not promise health or energy results. Results vary by system age, condition, and access.
Also, cleaning does not fix the cause of a moisture problem. If the condensate pan is not draining or the insulation is wet, that needs repair first. The EPA says wet or moldy duct insulation cannot be cleaned effectively and should be replaced.
Checks to make before you book
- Check your filter. Change it if it is dirty, using the type your system maker recommends.
- Look at the condensate drain and pan near the indoor unit. Standing water or debris there needs attention first.
- Shine a flashlight into a few supply vents and look for visible debris.
- Ask for a camera look inside, wherever your system allows it, so the decision is based on what is inside your ducts.
- Have the technician confirm the scope and total price before work begins, as the EPA advises.
- Ask for before and after photos, whenever possible.
Blue Pelican looks first before deciding to clean
Wherever your system allows it, we start with a camera look inside, and we show you what we see. If your ducts do not need cleaning yet, we will tell you. If they do:
- Free check first. Every visit starts with a free Whole-Home Air & Attic Check. The technician confirms the price, you approve it, and nothing is added without your approval.
- Whole system. We clean every duct and vent in your home.
- HEPA-filtered vacuum. Rotary brushes loosen the buildup, and a HEPA-filtered negative-pressure vacuum keeps the ducts under suction and removes it from your home. Debris is collected through HEPA-filtered equipment and is never blown into your living space.
- Botanical finish. We finish with a botanical product made with thyme oil, with no harsh chemicals.
- Final check. We finish with an airflow and system check, and we show you the result, with photos whenever possible.
- Our own team. Our technicians are our own employees, never subcontractors.
You can read about the service on our air duct cleaning page or look at how we price on the pricing page.
Sources
- EPA, “Should You Have the Air Ducts in Your Home Cleaned?” (not routine, only as needed; conditions for cleaning; moisture and condensation; dusty return registers; no evidence cleaning prevents health problems; wet insulation; written scope and price): https://www.epa.gov/indoor-air-quality-iaq/should-you-have-air-ducts-your-home-cleaned
- NADCA, “ACR, The NADCA Standard,” 2021 edition (Table 1 inspection intervals; inspect more often when conditions make it necessary; conditions that call for cleaning): https://nadca.com/sites/nadca/files/docs/2021/acr_the_nadca_standard_2021_edition.pdf
- EPA, “Mold Course, Chapter 2” (indoor relative humidity below 60 percent, ideally 30 to 50 percent): https://www.epa.gov/mold/mold-course-chapter-2
