What Chimney and Air Duct Work Costs in New York, and Why

Homeowners often ask us for a price over the phone before we have seen the chimney, the ducts or the dryer vent. We understand why. But in New York City, the same service can take very different amounts of time, equipment and labor depending on the building. A sweep on a short, clean flue with easy roof access is a different job from a sweep on a tall, heavily coated flue reached through a co-op's locked bulkhead. This page explains what drives the cost of each service we offer, so you know what to expect and can compare quotes fairly.

How We Price: A Written Quote After We See the Job

We don't quote flat prices sight unseen, because the details that drive cost usually can't be judged from a phone call. Once a certified technician has looked at your chimney, fireplace, ducts or dryer vent, we write down what we found, what we recommend and what it will cost. You can review it, ask questions and decide before anything starts.

If we find something during the work that changes the scope, such as a cracked flue tile behind heavy buildup, we stop and explain it. We don't add charges you haven't agreed to.

Chimney Sweeps and Inspections

The NFPA 211 standard calls for chimneys, fireplaces and vents to be inspected once a year. Many homeowners schedule a sweep at the same visit. Several factors affect what both will cost.

• Height and roof access: a tall chimney, a steep or slate roof, or a roof reached only through a hatch or bulkhead takes more time and safety setup.
• Fuel type: wood-burning fireplaces build up creosote, oil systems leave soot and scale, and gas appliances can leave debris and nesting material even though they burn cleaner.
• Flue size and condition: large or unusually shaped flues, multiple flues and damaged liners all change the work.
• Amount of buildup: light soot sweeps out quickly. Hardened, glazed creosote needs more aggressive tools and more time.
• Inspection level: a Level 1 inspection covers the readily accessible parts of a system when nothing has changed. A Level 2 inspection, called for when you add a new appliance, switch fuels or sell the home, includes a camera run through the flue and takes longer.

Repairs, Liners and Rebuilding

Repair pricing depends mostly on how much damage there is, where it is and what it takes to reach it. Repointing a few mortar joints near the crown is a smaller job than rebuilding a chimney above the roofline. Replacing a chimney cap or chase cover depends on the size and shape of the top of the chimney. Fireplace and damper repair depends on the parts involved and whether the firebox masonry needs work too. Chimney waterproofing depends on the surface area and on any masonry repairs needed first.

Chimney liner installation is shaped by the flue's height, the number of bends, the appliance it serves and the liner material that suits it. In New York City, when a building converts its boiler from oil to gas, the chimney has to be evaluated as part of the work. A new liner is often needed, because gas exhaust produces acidic condensate that can corrode a masonry flue. We look at your specific flue before recommending a liner type.

Air Duct and Dryer Vent Cleaning

Duct cleaning cost depends on how many supply vents and return vents you have, how long and accessible the runs are, and what is inside them. The 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 tell you honestly whether your ducts need cleaning.

Dryer vent cleaning is priced by the length of the vent run, how many turns it has, where it ends and how packed it is with lint. The U.S. Fire Administration identifies failure to clean as the leading factor contributing to clothes dryer fires in homes, so a clogged vent is worth addressing promptly.

Why Very Cheap Duct Cleaning Offers Turn Into Upsells

You have probably seen ads for whole-house duct cleaning at a price that seems too low to be real. The EPA warns consumers to research the process before responding to very cheap advertised offers. In our experience, those offers usually cover only a basic pass on a limited number of vents. Once the crew is inside, the bill grows with charges for extra vents, returns, the main trunk line, the air handler, sanitizing sprays and more.

The EPA also urges caution with chemical treatments in ducts. We only recommend them when there is a clear reason and you understand what is being applied. Our written quote lists what is included, so the price you approve is the price for the work you asked for.

Apartments, Co-ops and Building Access

Much of our work happens in multifamily buildings, where access affects cost as much as the work does. Some co-op and condo boards require scheduled access, building staff on site, elevator reservations or roof keys held by management. Work during New York City's heat season, which runs from fall through spring, may need to be coordinated so heating service in the building isn't interrupted. Tell us about your building's rules when you contact us, and we'll factor them into the quote.