The short answer
Air duct cleaning removes visible dust, renovation debris, pest material and other buildup from your supply and return ducts so air moves freely and vents stop blowing dust. It makes the most sense when you can see heavy dust or debris, have had pests in the system, or have finished a renovation.
Forced-air heating and cooling systems move a lot of air through your home, and over time the ducts can collect dust, debris from renovation work, pet hair, and sometimes signs of pests. All Star Chimney Sweep cleans supply and return ductwork for homeowners in Brooklyn and nearby cities. We use HEPA-filtered vacuums and rotary brushes so the debris leaves your house instead of settling on your floors and furniture. We'll also tell you plainly when cleaning isn't needed. Duct cleaning is a maintenance job. It removes what has built up inside the system and helps air reach every room. It is not a medical treatment, and we don't sell it as one.
Signs you need it
Most homeowners call us after noticing one of these problems. If you see more than one, have the system looked at.
The U.S. EPA advises cleaning air ducts when there is substantial visible mold growth, vermin, or excessive dust and debris. It also notes that duct cleaning has not been shown to prevent health problems. If your ducts are reasonably clean, we'll say so rather than sell you a cleaning you don't need.
- Dust puffs out of supply vents when the system turns on
- Thick dust or debris on register covers and just inside the duct openings
- Drywall dust, plaster or sawdust left in the system after a renovation
- Scratching or scurrying noises in the ductwork, or droppings and nesting material near a register
- Musty or stale odors that come through the vents when the system runs
- Some rooms get weak airflow compared with the rest of the house
- Visible mold growth inside the ducts or around the blower, which also points to a moisture problem that needs fixing

What's included
A standard air duct cleaning covers the whole forced-air system, not just the vent covers you can see.
- A walk-through of the system and a look inside several registers before work begins
- Drop cloths over floors and furnishings along the work path
- Removal and washing of supply and return register covers
- Brushing of the supply and return duct runs with rotary brushes and air whips
- Debris collection with a HEPA-filtered vacuum under negative pressure
- Cleaning of the return plenum and the reachable parts of the blower compartment
- A check of the system filter, with replacement if a correctly sized filter is on hand
- A camera look inside the ducts where needed to find blockages or confirm results
- Before-and-after photos and a short report on anything we found, such as disconnected or damaged sections
How our crew works in your home
Our certified technicians start by laying drop cloths from the entry to each work area and covering nearby furniture. We connect a HEPA-filtered vacuum to the main duct line and seal the registers. This puts the system under negative pressure, so loosened dust is pulled toward the vacuum instead of blowing into your rooms.
Next we work through each branch with rotary brushes and air whips to break buildup off the duct walls. Where a run is long, bends sharply, or has a suspected blockage, we use a camera to see what's inside before and after cleaning. We wash the register covers and reinstall them, then clean up the work area before we leave.
Most of the job happens indoors. If your bathroom or kitchen exhaust fans vent through the roof, or your equipment sits on the roof, we check the caps and terminations for nests, debris and damaged screens when we can safely reach them.
The EPA cautions homeowners to be careful with chemical treatments in ducts. We don't fog sanitizers or apply coatings as an automatic add-on. If a treatment seems worth considering, we'll explain what it is and why, and the choice is yours.
Time for your annual chimney check?
The guidance we follow
We follow the EPA's approach to air ducts. Clean them when there is a clear reason, such as visible mold, vermin, or excessive dust and debris. Research the process before responding to very cheap advertised offers. And be cautious with chemical treatments. If we find mold, we'll point out the likely moisture source, because cleaning alone won't stop it from coming back.
If you have a clothes dryer, have its vent checked while we're there. According to the U.S. Fire Administration, failure to clean is the leading factor contributing to clothes dryer fires in homes. Timing also matters in the city. New York City's heat season runs from October 1 through May 31, so many owners schedule duct work in late summer or early fall, before the heating system runs every day.
What affects the price
Every home is different, so we quote after we understand the system. These are the main factors:
- The size of the home and the number of supply and return vents
- The length and layout of the ductwork, including how many floors it serves
- Access, such as finished ceilings, tight basements, attics, crawlspaces, or roof access to exhaust terminations
- The type of system: furnace, air handler, or combined heating and cooling
- How much buildup there is, especially heavy renovation debris
- Pest debris or mold that needs extra containment and steps
- Whether a camera inspection or repairs are needed, such as resealing joints or reconnecting loose runs
How a visit works
When you call, we ask about your system, the age of the home, any recent renovation, and what you've noticed. Then we set a time that works for you.
On the day of the visit, the crew walks the system with you, looks inside several registers, and explains what we see. If cleaning makes sense, we confirm the scope before starting. Then we protect the work area, clean the system, wash and reinstall the covers, and check airflow at the vents.
Before we leave, we show you the before-and-after photos and go over anything that needs attention, such as a disconnected run, a damaged section, or signs of moisture. You'll know what was done and what, if anything, to watch for.
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