Cobble Hill, Carroll Gardens & Boerum Hill Dryer Vent Cleaning: Brooklyn's Brick Belt and Its 19th-Century Vent Quirks

If you live in the brick belt — the run of Brooklyn between Atlantic Avenue and the BQE, west of 4th Avenue, east of the harbor — your dryer vent is almost certainly older, narrower, and more vertical than the ones our crew services up in Park Slope or out in Ditmas Park. We've been cleaning vents in Cobble Hill, Carroll Gardens and Boerum Hill since before the F train added its R-211 cars, and the pattern is consistent enough that we now schedule these three neighborhoods as a single Saturday route. A Boerum Hill apartment on Pacific St, a Cobble Hill row house on Kane St, and a Sackett St garden duplex in Carroll Gardens look like three different jobs on paper. In practice, they share the same 1880s vertical ductway problem, the same rear-courtyard stagnation, and the same handful of mistakes left behind by the last contractor who promised "we'll snake it from the dryer side and call it a day."

This post is the long version of the answer we usually give over the phone. If you want the short version, it's this: in the brick belt, the dryer-side cleanout is rarely sufficient, the exterior cap is often on the wrong wall, and the original galvanized duct inside the chase has spent 140 years collecting a layer of lint that no shop vac will move. You need a roof-or-wall side mechanical cleaning, you need it on a known calendar, and you almost certainly need it more often than your neighbor in a 1990s Park Slope condo.

If you want even more context on Brooklyn vent work generally, our Brooklyn dryer vent cleaning complete guide covers the citywide patterns. This post zooms in.

Why the brick belt has its own dryer vent identity

The first thing to understand is the footprint. Cobble Hill and Boerum Hill row houses are typically 20 to 25 feet wide. Carroll Gardens deep blocks — Carroll, President, 1st Place, 2nd Place, 3rd Place, 4th Place — push closer to 22 feet, with a few outliers at 18. Compare that to a classic Park Slope brownstone on Garfield or Berkeley, which is often 25 to 30 feet wide with a deeper lot. The brick belt house is narrower, which sounds like an advantage — shorter horizontal duct runs to a side wall — but it isn't. Here's why.

In a 22-foot wide row house with a finished cellar laundry, the dryer almost never sits against a usable exterior wall. It sits against the chase that runs alongside the kitchen plumbing stack. That chase carries the dryer duct vertically, sometimes three full stories up, before it cuts horizontally through the rear cornice or the parapet flashing and terminates in a wall cap at the back. So the run that looks "short" on a floor plan is actually a 28 to 38 foot mostly-vertical pull through a chase you cannot open without pulling baseboard and plaster on two floors.

This is the defining problem of the brick belt. The duct is long, but it's long in a direction that's invisible to homeowners and to most cleaners. If you bring a 25-foot rotary brush and snake it from the dryer connection, you'll feel like you cleaned it. You'll see a respectable pile of lint in the catch. Then 18 months later we'll measure 280 FPM exit velocity at a cap that ought to do 1,200, because the upper third of the vertical run still has a 3/4-inch concentric lint coating from the day the house was wired for a Maytag.

The Italian-American demographic that defined Carroll Gardens for three generations — and still defines big stretches of the deep blocks — keeps laundry rituals that the rest of Brooklyn frankly does not. Heavy bedding washed weekly, hand towels in volume, sheets line-dried until November and then machine-dried in a single push when the weather flips. Sundays are laundry days. We have customers on Court St who run their dryer 14 to 18 hours a week from October through April, double what a comparable Williamsburg one-bedroom couple runs. That changes the cleaning calendar. A dryer doing 18 hours a week of bedding loads through a 32-foot vertical run needs service every 12 months, not every 18 to 24.

The combination — long vertical chases, dense laundry use, and 19th-century brick that doesn't forgive any kind of vibration — is what makes this corner of Brooklyn its own job category for us.

The three building eras

We sort brick-belt buildings into three eras when we estimate. Each era has its own ductway quirk.

1840s to 1860s Greek Revival row houses (Carroll Gardens deep blocks)

The oldest Carroll Gardens stock — the deep-block row houses on 1st Place, 2nd Place, and parts of President and Carroll — went up between 1840 and the late 1860s. They were built tall and narrow on lots that the developer Richard Butts deliberately platted with 33-foot front yards. The houses themselves are usually 20 to 22 feet wide. Original construction had no laundry plumbing on upper floors. Laundry was a basement activity, drying was a back-yard activity, and there was no provision whatsoever for a mechanical dryer.

When dryers were retrofitted — usually in three waves, post-war, then 1970s, then 2005-2015 condo conversions — the path of least resistance was the existing kitchen flue chase. That chase was built for a coal stove in 1855. It runs from the cellar straight up to the roof, brick-lined, often 8 by 12 inches in cross-section. Retrofitters dropped a 4-inch galvanized round or, worse, a 4-inch flex inside that chase and called it good. There is no inspection access. There is no straight pull from either end. We have one customer on 2nd Place whose dryer duct passes inside an active chimney chase that still has soot from the original coal stove on the brick walls. Every cleaning, we come out black.

Greek Revival shorthand: tall, narrow, 33-foot front yards, four floors, vertical duct routed through the original kitchen flue chase. Plan on 28 to 36 feet of mostly-vertical pull, plan on roof-cap access, plan on a 2 to 3 hour job.

1880s to 1890s brick row houses (Cobble Hill core)

Cobble Hill proper — Kane St, Strong Pl, Tompkins Pl, Warren St — and the Boerum Hill blocks around State and Pacific are mostly 1880s and 1890s. These are still brick, still narrow (22 to 25 feet typically), but the floor plan opens up. Most of these were built with a rear extension on the parlor floor and a more usable cellar.

The duct era matters because by 1890 Brooklyn builders had standardized on a side-yard flue location for kitchen ranges. That flue, which runs up the side wall (not the kitchen stack), is what later got commandeered for dryer ducts. The good news: the side-wall path is shorter. The bad news: it shares a wall with the neighboring row house and any work that involves drilling or vibration becomes a party-wall conversation. We've had three calls in the last year from Kane St where a previous cleaner ran a brush at high RPM through the side-wall duct and the next-door neighbor heard it as a "rattling" and the entire job became a coordination problem before we even arrived.

1900s to 1920s apartment buildings on Smith St / Court St

The third era is the mid-rise apartment stock along Smith St, Court St, Henry St, and the side streets that intersect them. Buildings like the ones at Smith and Wyckoff, or the cluster around Court and Carroll, went up between 1900 and the late 1920s. They are 4 to 6 story walk-ups, mostly brick with limestone trim, converted to condos or kept as long-haul rentals.

The dryer situation in these buildings is genuinely different. The original buildings had no in-unit laundry. Stackable washer-dryers were retrofitted into kitchen alcoves or bathroom closets, with the dryer venting horizontally through the exterior brick to a sidewall cap, usually 8 to 14 feet of run. That sounds easy. It is not. Two reasons.

First, the duct often passes through a fire-rated wall assembly that was cored without a proper firestop sleeve. By code (NFPA 211 and the NYC Mechanical Code chapter on dryer exhaust) that core needs a listed firestop, and most of them don't have one. We cannot fix that with a cleaning visit, but we'll note it.

Second, the wall cap is often shared in a cluster — three or four units' caps spaced two feet apart on the rear elevation — and the worst-performing unit creates backpressure for its neighbors. We have buildings on Smith St where unit 3R thinks they have a dryer problem and the real cause is unit 4R's clogged cap right next door.

For the broader pattern on co-op coordination, our Brooklyn co-op and condo dryer vent cleaning guide covers building-side workflow in more detail.

The deep front-yard problem

Carroll Gardens is famous for its 33-foot front yards, set by Richard Butts in the 1840s as a kind of garden-suburb counterweight to the row-house density. Those yards are a gift to the neighborhood. They are mostly irrelevant to your dryer vent, except in one specific way that nobody warns homeowners about.

When a contractor reroutes a dryer vent in a Carroll Gardens deep-block house — usually during a kitchen renovation that moves the laundry from the cellar to a stacked unit on the parlor floor or upstairs — they sometimes choose the front of the house for the exterior termination. Why? Because the front yard is deep, the duct run becomes short and easy, and the front facade has nice tall brick to drill into.

This is a mistake we untangle a lot. The front of a Carroll Gardens row house faces north, south, east, or west depending on the block, but in any case it's the public face of the building. The Landmarks Preservation Commission has jurisdiction over the entire Cobble Hill and Carroll Gardens Historic Districts. A dryer cap punched through a landmarked front facade is, at minimum, a violation. We've seen them painted to match the brick (still a violation, but harder to spot from the sidewalk) and we've seen them dressed up with a wood louver (worse). In one Sackett St case the homeowner got a Department of Buildings ECB notice four years after the renovation. The fix was a rear-routing job that ran $4,200 in 2024 dollars, not because the duct work was hard but because the patching of the original brick required a mason and a permit.

If you're planning a kitchen reno that involves moving the laundry: the dryer cap goes on the rear elevation. Always. Even if the rear run is longer. Even if your contractor says they can flash a perfect front-facade cap. Front-facade dryer caps in the landmarked districts will eventually become a problem.

The other half of the deep front-yard problem is the rear courtyard. Carroll Gardens row houses on the deep blocks have rear yards that are often 25 to 35 feet deep, but they're enclosed on three sides by neighboring buildings and on the fourth by your own. Air does not move well back there in the summer. We've measured wall-cap exit conditions on rear courtyards where the prevailing wind dead-spots so completely that lint exiting the cap settles in a halo on the brick within four feet. That halo, over years, builds into a small lichen of compressed lint that re-enters the cap on inhale during cooler weather and accelerates blockage. It's a small effect on any given cycle. Over a decade it adds up.

The fix for rear-courtyard stagnation is not complicated: a recessed cap with a more aggressive damper, or a wind-vane attachment that biases discharge upward and outward. Cost is around $180 to $260 in parts and a half-hour of labor.

What a typical job looks like — Sackett St garden duplex

We get the call on a Tuesday. The owner is renovating the parlor and garden floors of a Sackett St row house into a duplex unit and the rental upstairs into two separate apartments. There are now three dryers in a building that historically had one. The duplex has its own stacked unit in a parlor-level closet. The two apartments each have a dryer in a kitchen alcove. The original 1880s duct chase serves the duplex. The two apartments are venting through new horizontal runs cut into the rear wall during the reno.

We arrive at 8:45 on a Saturday morning. Parking on Sackett between Smith and Hoyt is a problem we have planned for — we always block off Saturday for Carroll Gardens deep-block work, knowing the alternate-side situation and the foot traffic.

The duplex dryer is a Bosch heat-pump unit in a second-floor closet (counting the parlor as floor 1). The duct rises from the dryer connection, through a chase boxed in alongside the closet wall, up to a transition at the roof line, and out a roof cap on the rear slope of the mansard. Total measured run, by our duct ball: 36 feet 4 inches with three elbows. By NFPA 211 the equivalent length budget for a 4-inch duct on a residential dryer is 35 feet with allowances debited per elbow. This duct is over budget. The Bosch tolerates it because heat pumps don't push as much air, but the trade-off is that lint settles faster.

Our roof access is through a hatch in the duplex bedroom. We coordinate with the homeowner to lay drop cloths on the path from the front door through the parlor, up the stairs, into the bedroom, and onto the roof. We carry our HEPA negative-air machine to the rooftop and seal the cap end. We run an inspection camera from the dryer end up. The camera shows a uniform 3/8-inch lint layer in the lower 18 feet, a heavier ribbon coiled around the first 90-degree elbow, and a near-occluded patch in the last 4 feet before the roof cap. We measure pre-clean exit velocity at the cap: 410 FPM. Target is 1,200 minimum.

We run a rotary brush from the dryer side, controlled feed, with HEPA suction pulling at the cap. Forty minutes of feed-and-retract. Then a second pass from the roof side because the upper elbow always wants to keep a residue. We swap to a smaller-diameter polypropylene brush for the elbow. We re-camera. We measure exit velocity: 1,340 FPM. Done with that dryer.

The two apartment dryers are easier — 12 and 14 foot horizontal runs through the rear wall. Each takes about 35 minutes. Combined job time on the building: 4 hours 20 minutes including setup, teardown, and a hand-off conversation with the homeowner about heat-pump dryer maintenance (skip the lint filter step on most heat-pump units and the condenser coil clogs in 8 months — see our long-vent-run brownstone guide for that pattern).

Total invoice: $625 — a single trip with three appliances served. If we'd had to do them as separate visits, we would have been at $1,025 minimum just on the trip-charge math.

The Smith St / Court St mid-rise apartment vent reality

If you live in a 5-story walk-up condo or a small co-op on Smith between Atlantic and Carroll, or anywhere on Court between Atlantic and Kane, the workflow looks completely different. There are three layers of authorization that have to happen before we can even bring our equipment into the building.

Layer 1 — Unit owner schedules

You call. We schedule. Easy.

Layer 2 — Building management or super coordination

Many of these buildings require notice — typically 48 to 72 hours, in writing, to either the managing agent or the super. Some buildings want a copy of our Certificate of Insurance with the building listed as additional insured. Some want it naming both the LLC that owns the building and the managing agent. A few want a separate rider for elevator use, which is moot in walk-ups but lingers in policy language from when the buildings were larger before they were divided.

We carry a standard COI template with $2M general liability, $1M auto, full workers' comp. We can re-issue with whatever certificate-holder language a building requires; typical turn-around from our broker is one business day.

Layer 3 — Board letter for any work that touches a building-wide system

Most dryer cleanings are unit-internal and don't trigger this layer. But if your dryer vents into a shared sidewall cap cluster — which most Smith St buildings do — and we determine during the visit that the problem is a neighbor's cap, or that the wall sleeve itself is compromised, we will pause and recommend a board letter to the managing agent. That letter requests permission to coordinate access with the neighboring unit and/or to inspect the wall sleeve from the exterior (sometimes scaffolding-dependent).

The board-letter delay is real. We have buildings on Smith that took six weeks from initial visit to authorized re-entry. We document everything on the first visit so the homeowner has a clear written record to give the board, and we don't charge for the re-entry inspection if it happens within 90 days of the first visit.

For COI templates and the general pattern on co-op work, see our Brooklyn co-op and condo dryer vent cleaning guide.

What we find

A non-exhaustive list of the things we have personally pulled out of brick-belt dryer ducts in the last 18 months:

• Vintage 1970s gray plastic accordion transition hose inside a wall, taped to a galvanized duct with mid-1970s electrical tape that had reverted to a sticky goo. The accordion had been crushed when a plumber re-pitched the kitchen waste line in 1988 and never re-extended.
• Drywall screws piercing flexible transition hose where a kitchen renovation cabinet maker had affixed an upper cabinet without checking what was behind the wall. Each screw point had become a lint catch. NFPA 211 explicitly prohibits screws or fasteners that penetrate the duct interior more than 1/8 inch, and the original installer wasn't even thinking about that — they were anchoring a cabinet. We documented six screw points in a 14-foot run on a Wyckoff St job in late 2025.
• Kinked horizontal runs that have settled with the building. Brick row houses move over 140 years. A 4-inch rigid duct strapped to a joist in 1968 will not be in the same plane in 2026. We see runs that have an inadvertent low point in the middle, which collects moisture from the dryer exhaust (especially in winter, when warm exhaust hits a cold metal duct and condenses). The moisture binds with lint and creates a stable plug that no air-only cleaning will dislodge.
• Bird nests. Specifically: house sparrows in spring, starlings in fall, and one squirrel in a Cobble Hill rear-wall cap that did not survive its exploration but did create a memorable summer odor. The wall caps on most brick belt houses have failed flapper dampers and the louvers spread on the first warm day of spring.
• Lint that has compressed under heat and time into a substance with the consistency of dense felt. This stuff doesn't blow out. It has to be mechanically separated from the duct wall. We carry a heavy-bristle stainless brush for it.
• The original 1960s wall cap, in copper, with the original 4-inch hood and a damper that hasn't moved in two decades.
• Vents that have been re-terminated into a soffit during a roof replacement and now discharge into the soffit cavity instead of outdoors. This is bad — moisture and lint in a wood structure — and it's surprisingly common. See our roof, wall and soffit dryer vents guide for how to spot it.
• A 1986 dollar bill, washed and dried so many times that it had a leathery quality, lodged in an elbow on a Court St job.

The pattern, if you squint, is that the brick belt has accumulated decades of small modifications by people who weren't dryer specialists. Plumbers, electricians, cabinet makers, roofers — each of them did their job correctly, with respect to their own scope. None of them was thinking about the duct. Over time, that lack of attention compounds.

Pricing

Here is what we charge as of the publication date of this post. These are bottom-line invoice prices, all-in, with full mechanical cleaning, HEPA negative-air containment, before-and-after airflow measurement, and a written one-page service report.

Building type	Typical run	Number of dryers	Price range
Row house, 1 dryer, vertical chase	28-38 ft	1	$325-$525
Row house, 2 dryers (garden duplex)	mixed	2	$475-$725
Row house, 3 dryers (triplex conversion)	mixed	3	$625-$925
Apartment, sidewall cap	8-16 ft	1	$225-$350
Apartment, ceiling-routed to roof	16-28 ft	1	$300-$450
Add: roof-cap replacement	n/a	n/a	$180-$280
Add: damaged transition hose replacement	n/a	n/a	$90-$140
Add: rigid duct replacement, accessible	per linear ft	n/a	$35-$55

A few notes on the ranges. The lower end of each band is for jobs we can complete from the dryer end in a single pass, with a wall cap that doesn't need attention and no surprises in the duct. The upper end accounts for either a roof-access requirement, a particularly long run, or a duct that needs a second pass because of compressed lint or moisture binding.

We do not charge a separate trip-charge for additional dryers in the same building if we can service them on the same visit. The pricing on multi-dryer jobs (duplex, triplex) reflects that. We also do not charge a separate fee for the airflow measurement or the report — those are included.

For citywide context on what dryer vent work costs in Brooklyn, see our Brooklyn dryer vent cleaning cost guide.

Scheduling

Three things to know about scheduling brick-belt work specifically.

Parking on Smith and Court is hostile

Our van is a half-ton cargo with full vertical equipment racks. It does not park in a 14-foot legal spot. On Smith Street between Atlantic and 9th, the legal parallel parking is constantly contested and the metered slots have 90-minute limits that don't survive a 3-hour job. Our standing solution: we double-park with hazards on for the first 10 minutes (long enough to walk the route and unload), and then we move to a side street. Most side streets in the brick belt have alternate-side cleaning that creates predictable 90-minute windows. We've memorized the schedule for Sackett, Union, President, Carroll, Kane, Warren, Wyckoff, Bergen, Pacific, Dean and State. If you tell us your block, we'll tell you what window we'll target.

Saturday is the easiest day in the brick belt — alternate side is mostly suspended, the side-street density is lower, and most homeowners are home to let us in. We dedicate one Saturday a month to this corridor and book it 3 to 4 weeks in advance from October through March.

Weekend availability is real

We are a small crew and weekend work is real overtime for us, but we know that the brick-belt customer base is largely two-income households where weekday access is impossible. Our weekend rate is the same as our weekday rate. We charge premium for last-minute weekend slots inside a 48-hour window — that surcharge runs $75 to $125 and we'll always tell you about it before we book.

COI delivery to the building manager

If you're in a Smith St or Court St building, when you book, tell us the building name or address and the managing agent's contact. We'll have a building-specific COI in their inbox within one business day, with the right additional-insured language. This is the single biggest reason brick-belt apartment jobs get delayed at the gate — homeowner books, day-of arrival, super doesn't have the COI, job postponed two weeks. Front-loading this is free.

A real Boerum Hill walkthrough

This is a job we did in late 2025, on a Wyckoff St block between Bond and Nevins. Townhouse, 1890s brick, four floors plus a deep cellar. The owner had recently bought it from an estate and was renovating in phases. The dryer in question was a stacked Whirlpool unit in a parlor-floor closet, which had been retrofitted into the building maybe 12 years earlier by a previous owner.

The call came in because the dryer was throwing an internal "exhaust restricted" code after about 25 minutes of operation on a normal load. Not a fire risk yet, but a clear indicator that the duct was working hard against backpressure. Owner had cleaned the lint screen religiously. The pull-out tray and screen housing were spotless. The problem was downstream.

We arrived at 11:00 on a Saturday. Parking on Wyckoff was easy — the block is residential and we found a spot half a block down. Walked the equipment to the front stoop in two trips. Spoke with the owner about the building. Original 1890s footprint, never gut-renovated, several layers of cosmetic work in the 1960s, 1980s and the recent purchase. The dryer closet had been built into what used to be a butler's pantry. The closet wall, against which the duct rose, was original 1890s lath and plaster over brick.

We pulled the dryer out, disconnected the transition hose, and ran an inspection camera. The camera found three things in the first 6 feet:

1. The transition hose itself was a 5-foot vinyl flex run with two crushed sections where the dryer had been pushed back too tightly against the wall. Vinyl flex is non-compliant — the code requires UL 2158A-listed or metal flex for transition. We flagged it.
2. Behind the closet wall, the duct turned 90 degrees and entered the chase. The elbow was a 1980s galvanized sheet-metal piece, friction-fit (no rivets, no foil tape), with a noticeable downward slump where the support strap had pulled out of the lath.
3. Inside the chase itself, the duct rose vertically for what we eventually measured at 31 feet. The chase emerged at a rear-wall horizontal extension, made another 90 degree turn, and ran 7 feet to a rear-wall cap above a second-story window.

Total equivalent length: about 44 feet with two 90s — well over the 35-foot NFPA budget. The Whirlpool's exhaust-restriction code was, honestly, the dryer behaving correctly. It was being asked to push air through a duct that was code-compliant on the day it was installed and is no longer compliant under current standards even before you count the lint.

We rigged HEPA negative-air at the rear-wall cap (we have a 28-foot extension pole with a sealing collar for exactly this kind of out-of-reach cap). We ran a rotary brush from the dryer end. We did three passes. We replaced the transition hose with a UL 2158A-listed semi-rigid metal flex. We re-rived the elbow into the chase and added a new support strap. We did a final camera pass to confirm the vertical run was clean to the upper elbow.

Pre-clean exit velocity: 285 FPM. Post-clean exit velocity: 1,180 FPM. Total time on site: 3 hours 15 minutes. Invoice: $565 (which included $90 for the transition hose replacement). The dryer threw no codes on three subsequent test cycles before we left.

The owner asked us when they should expect to need this again. Our answer: 14 to 16 months, given the run length and the household usage pattern (two adults, two kids, no pets, normal laundry volume). We put them on our automatic-reminder list.

FAQs

How do I know if my Cobble Hill row house has a roof-cap or a wall-cap termination?

Walk to your rear yard and look up at the back of the building. Most brick belt row houses have either a sidewall cap (a 4-inch louver, usually 5 to 12 feet below the roofline) or a roof cap (a hood on the rear slope or a parapet penetration). If you see neither, the cap may be on the front facade (this is a problem — see the deep front-yard section above) or in an unconventional location. We can identify it on a site visit.

My building on Smith St says I need to schedule with the super. Do I still call you first?

Yes. Call us first. We will help you coordinate with the super and we will have the COI in the building's inbox before we arrive. The order is: you book with us, then we coordinate with the building. We do this every week.

How long does a brick-belt dryer vent cleaning take?

For an apartment with a single sidewall cap and a 12 to 18 foot run, plan on 90 minutes from arrival to departure. For a row house with a long vertical chase, plan on 2 to 3 hours. For a multi-dryer building (duplex, triplex), plan on 4 to 5 hours.

Why does my Carroll Gardens neighbor only get the dryer cleaned every two years and I keep getting told I need it yearly?

Almost certainly because your neighbor's run is shorter, their household usage is lower, or their dryer is a newer high-efficiency model that pushes less air (and therefore deposits less lint, but also fails more dramatically when blocked). The right frequency depends on run length, household size, and dryer type. We give a frequency recommendation in writing on every service report — see how often to clean your dryer vent in Brooklyn for the underlying math.

Is a heat-pump dryer a good idea in a brick belt row house?

It's a great idea for energy and for noise, and it's an okay idea for vent simplicity (ventless heat-pump dryers obviously have no exhaust duct at all). But if you have a vented heat-pump dryer — which exists and is more common than ventless in the US — it pushes substantially less air than a conventional electric or gas dryer, which means a long brick-belt vertical run will collect lint faster and the dryer will work harder against any restriction. Net: vented heat-pump dryers are not a great fit for very long vertical runs. Ventless heat-pump dryers are fine. Conventional electric or gas dryers are fine if the duct is well-maintained.

Can you do my job during the week if I work from home?

Yes. We have weekday slots and we book them well in advance. Our weekday-arrival window is typically 8:30 AM to 6:00 PM with a 2-hour confirmation window the day before. Brick-belt weekday work is slower because of school traffic on Smith and Court, so we typically schedule one row house per morning and one apartment per afternoon, with travel time built in.

Does the Landmarks Preservation Commission care about my dryer cap?

Yes, if the cap is on a facade visible from a public right-of-way. Cobble Hill and Carroll Gardens are designated historic districts. Rear facades are generally not regulated to the same standard, and dryer caps on rear elevations are unproblematic. Front facades are a different story. If you're planning to add or move a dryer cap during a renovation, the rear elevation is the only safe answer.

What's the right exit velocity for a clean dryer vent?

By manufacturer spec, most residential dryers want to see at least 1,000 FPM at the exterior cap with the lint screen clean and the dryer running on its hottest cycle. We target 1,200 FPM post-cleaning as a safety margin. Below 800 FPM, drying times noticeably lengthen. Below 400 FPM, the dryer will throw exhaust-restriction codes, fail to dry, and create real fire risk. We measure exit velocity on every job — pre and post — with a calibrated hot-wire anemometer.

Will you clean the inside of my dryer too?

The lint trap and the immediate surrounding cavity, yes — that's part of the standard service. A full appliance teardown (motor housing, blower wheel, internal lint deposits behind the drum) is a separate service we'll quote on site if it's warranted, typically $140 to $220 depending on the model.

What if you find a code violation during the cleaning?

We document it on the service report, photograph it, and explain it to you. If it's a safety issue we can fix on the spot (replacing non-compliant transition hose, for instance) and you authorize it, we'll do it and bill it as a line item. If it's a larger fix (replacing the entire duct run inside a wall, addressing a missing firestop in a fire-rated assembly), we'll quote it separately and you can decide whether to schedule. We do not pressure-sell upgrades. We do not invent code violations.

How do I pay?

Card, ACH, or check. We send a digital invoice from the truck before we leave. We do not require deposits for residential work under $1,000.

A note on neighboring zones

If you're reading this because you live somewhere adjacent — Brooklyn Heights, Red Hook, Gowanus, Park Slope west of 5th Avenue — the patterns described here partly apply and partly don't. Brooklyn Heights row houses tend to be older and wider than Cobble Hill stock and the duct runs are different. Park Slope brownstones are taller and the chase math changes. See our Park Slope dryer vent cleaning guide for that zone. Red Hook and Gowanus have a much broader mix — converted industrial, low-rise frame, and tall new construction — which is its own conversation.

If you're in the brick belt and you've never had a mechanical (not chemical, not snake-only) dryer vent cleaning done from both ends of the duct, you are overdue. The longer you wait, the more compressed the upper-third lint becomes, and the harder the eventual cleaning gets. We've turned away exactly two jobs in the last five years where the duct was so impacted that the right move was a full duct replacement instead of a cleaning — both were 1850s Carroll Gardens deep-block houses where the duct had not been touched since the 1970s.

Book us, and we'll do it right the first time. Call our crew at (718) 541-5567 or use /book — Saturday slots in the brick belt fill three to four weeks ahead from October through March, so the earlier the better. Vent Pro NYC, based in Brooklyn, cleaning brick-belt vents one Greek Revival chase at a time.