Chimney and Duct Cleaning FAQ

The NFPA 211 standard calls for chimneys, fireplaces and vents to be inspected once a year. The inspection shows whether soot or creosote has built up enough to need a sweep. Homes that burn wood often usually need sweeping more often than homes that rarely use the fireplace.

We protect the floor and the area around the fireplace, then use brushes and vacuums to remove soot, creosote and debris from the flue, smoke chamber and firebox. While we work, we look for damage, blockages and nesting material. We'll tell you about anything that needs attention.

Chimney professionals use three levels. A Level 1 inspection fits when nothing about the system has changed. A Level 2 is used when the system changes, such as a new appliance or a switch of fuel, or when the home is sold. A Level 3 is needed when a hidden hazard can only be reached by opening part of the chimney or building.

Yes. A home sale is one of the situations that calls for a Level 2 inspection. It gives buyers and sellers a clear picture of the chimney's condition before closing.

When a New York City building converts its boiler from oil to gas, the chimney has to be evaluated as part of the job. A new liner is often needed because gas exhaust produces acidic condensate that can corrode a masonry flue. We can inspect the chimney and explain your liner options.

Common signs include crumbling mortar, loose or spalling bricks, water stains near the fireplace, rust on the damper, and pieces of tile or masonry falling into the firebox. A damper that won't open or close properly is another sign. If you notice any of these, schedule an inspection before you use the fireplace again.

A chimney cap sits on top of the flue and keeps out rain, animals and debris. A chase cover protects the top of a framed or factory-built chimney from water. Both help prevent the kind of moisture damage that leads to bigger repairs.

Brick and mortar absorb water, and in freeze-thaw weather that water can crack the masonry. A breathable waterproofing treatment keeps rain out while letting moisture escape. It works best on masonry that is already in sound condition or has just been repaired.

According to the U.S. Fire Administration, failure to clean is the leading factor contributing to clothes dryer fires in homes. Lint collects in the vent duct, where you can't reach it from the lint trap. Long drying times, a hot laundry room or a burning smell all mean it's time for a cleaning.

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. We'll tell you honestly whether your ducts need cleaning.

The EPA warns consumers to research the process before responding to very cheap advertised duct cleaning offers. It also advises caution with chemical treatments such as sanitizers and coatings. Ask any company to explain exactly what it will do and what products it plans to use before work begins.

Don't use the fireplace or stove for at least a day before a sweep so the ashes and flue have time to cool. Clear a path to the fireplace, laundry area or vents, and move fragile items out of the way. If we need roof access, arrange it ahead of time.

It depends on the service, the condition of the system and how easy it is to reach the roof or vents. A routine sweep or dryer vent cleaning takes less time than repairs, liner work or a full duct cleaning. We'll give you a time estimate when you book.

We lay down drop cloths, seal off the fireplace opening and use vacuums to contain soot and dust. We clean up the work area before we leave. Some light dust is possible in older homes, so we suggest moving nearby rugs and furniture if you can.

Please keep pets in a separate room or crate while we work. We'll have doors open and equipment running, and the noise can upset animals. It also keeps them away from soot and debris.

Many Brooklyn rowhouses and apartment buildings reach the roof through a hatch or bulkhead, which may be locked or managed by a super or building manager. Please check with them before your appointment and let us know how access works. If we can't reach the roof safely, we'll talk with you about other options.