Short answer: a proper air duct cleaning takes 2 to 4 hours for a typical single-system South Florida home — longer for bigger houses, multiple systems, or ducts that haven’t been touched in a decade. Here’s what fills that time, and why “we’ll be done in 45 minutes” is a red flag, not a selling point.
What Happens Hour by Hour
- Setup and inspection (30–45 min) — checking the system, protecting floors and furniture, sealing registers, connecting negative-pressure equipment
- The cleaning itself (1–2+ hours) — agitating and extracting buildup from every supply and return run, cleaning grilles and registers, addressing the air handler area
- Wrap-up (30 min) — reassembly, final checks, and walking you through what was found
The full step-by-step is in how ducts are cleaned.
What Makes It Take Longer
- Multiple AC systems — each system is essentially its own job
- Attic air handlers and tight access — common in South Florida homes
- Heavy buildup — post-construction dust, years of pet hair, or smoke residue
- Findings along the way — damaged flex duct, disconnected runs, or growth that needs attention
Do You Need to Be Home?
Someone should let the crew in and be reachable, but you don’t need to hover. Good crews work clean: floor protection down, registers back on, and no mess left behind.
The 45-Minute “Cleaning”
A crew that’s in and out in under an hour vacuumed around your registers and called it a day. The buildup that affects your air and your AC’s efficiency lives deep in the runs — reaching it takes equipment and hours, which is exactly what you’re paying a professional for.
Breathe Easier With South Florida Ducts
Family-owned and serving Broward, Miami-Dade, and Palm Beach counties. Call (954) 909-4281 or request a free quote and we’ll take a look — no pressure, no upsell.