New systems built for Brooklyn buildings — brownstones, co-ops, prewar apartments, and new construction. Central AC, mini-splits, furnaces, and heat pumps from the brands that actually last.
Brooklyn, New York isn't suburban tract housing. The buildings are older, the floor plans are stranger, the access is tighter, and the heat-load patterns don't match what an out-of-borough HVAC contractor expects. A 4-story brownstone in Park Slope, a top-floor co-op in Brooklyn Heights, and a renovated wood-frame in Bed-Stuy each need a different approach — and we install in all of them every week.
We install central air conditioning systems, ductless mini-splits (single-zone and multi-zone), gas furnaces, and air-source and hybrid heat pumps from Daikin, Mitsubishi, Fujitsu, Trane, Carrier, Bryant, LG, and other major HVAC manufacturers. We repair hot-water boilers but do not install or replace them. Replacing a furnace specifically? Furnace installation and replacement has its own page — sizing, venting, ductwork, and what the quote includes. Brand selection isn't a coin flip — it depends on the application, the existing infrastructure, and what's worth paying for in your specific situation. We'll walk through the trade-offs at the consultation — and if you're weighing ductless against central, read comparing ductless and ducted systems. Our Brooklyn mini split installation guide covers what the install day itself looks like.
Fast turnaround on new installations — call us and we'll get you on the schedule quickly. The installation consultation and written quote are free.
Brooklyn rooftop install — Lennox → Bosch upgrade. Higher efficiency, lower energy bills, dramatically cleaner installation.
Full central AC installs for brownstones, co-ops, and single-family homes — sized to your space and your existing ductwork, not whatever's on the truck.
Single-zone and multi-zone mini-splits for prewar buildings, additions, and any space where running ductwork isn't realistic. Daikin, Mitsubishi, Fujitsu, LG.
Gas furnaces and air-source and hybrid heat pumps — sized off a real load calc, not a rule of thumb.
Complete swap-outs when an old system is past saving — heating and cooling replaced together so the new equipment is properly matched.
A few shots from recent installations across Brooklyn — rooftops, brownstones, and tight access jobs.
From the first phone call to the final walkthrough — clear, step-by-step, no surprises.
On-site walkthrough — we look at the space, your existing system, and what's actually possible.
A real Manual J–style sizing calculation so the new system matches the building, not a guess.
Written quote with options at different price points and brands — you choose what fits the budget.
EPA-certified crew, drop cloths down, clean lineset and condensate routing, no surprises.
We start it up, verify charge and airflow, then show you exactly how to run it.
Most of our installs come with Brooklyn-specific complications: brownstone retrofits where there's no obvious place for ductwork, co-op and condo board approvals that need drawings and a COI before work starts, line-set routing on landmarked streets where anything visible from the sidewalk is a problem, and old service alleys that take careful planning to navigate with new equipment.
We do this every week, in every kind of Brooklyn building. We know which condenser placements LPC will accept on a rowhouse facade, which boards require sound documentation before signing off on a rooftop unit, and how to route a multi-zone lineset through a four-story brownstone without trashing the parlor ceiling.
Daikin, Mitsubishi, Fujitsu, Trane, Carrier, Bryant, LG, and other major HVAC manufacturers — chosen for your space and your budget, not whatever pads the bill.
All installation labor is guaranteed for one full year. Manufacturer warranties on equipment vary by brand and are confirmed in your written estimate.
$0 down, 18-month 0% APR available through Wisetack on qualifying installs. Soft credit check — no impact to your score.
4.8 stars from 81+ verified Google reviews.
"My AC stopped working as a heat wave started. Ben picked up the phone when I called, gave me a realistic assessment of his availability, arrived when he said he would, was straightforward about the cost — and then did a tremendous job."
— Justin V., Park Slope · June 2025
"I called Brownstone for a second opinion after my heat stopped working during deep freeze. The first company wanted to charge a high price to dismantle and clean my system. Ben offered a much better option — for the same price, he installed a brand new furnace and motor."
— Jonathan B., Cobble Hill · February 2026
"Ben has been helping me with my many AC needs for the past few years. He is very reliable, has always found the issue quickly, and has been able to solve it."
— Arturo M., Bed-Stuy · September 2024
We do a real load calculation based on the size, layout, insulation, and window exposure of your space. Brooklyn buildings are notorious for being mis-sized when contractors guess — too-big systems short-cycle, run humid, and wear out fast. We size it right the first time.
Depends on the application. Daikin and Mitsubishi lead on multi-zone ductless. Fujitsu is a workhorse on single-zone retrofits. Trane, Carrier, and Bryant are solid choices for traditional central air in brownstones and single-families. We'll walk through the trade-offs in plain English at the consultation — quiet operation, efficiency rating, parts availability, warranty length — so the choice makes sense for your situation.
Yes — and it's one of the most common jobs we do. Ductless mini-splits are usually the right answer for prewar Brooklyn buildings because they don't require opening up ceilings and chases. We can also run high-velocity ducted systems (Unico/SpacePak) where there's a real reason to keep things hidden.
Constantly. We've put together drawings, COIs, condenser-location plans, and noise documentation for board submissions across Brooklyn Heights, Park Slope, Cobble Hill, and Carroll Gardens co-ops. We know what most boards want to see before they'll approve a line-set penetration or a rooftop condenser.
Yes — $0 down, 18-month 0% APR available through Wisetack on qualifying installs. Soft credit check with no impact to your score. Most customers prequalify in under 60 seconds.
All installation labor is guaranteed for one full year. Manufacturer warranties on equipment vary by brand and are confirmed in your written estimate.
Fast turnaround on new installations — call us and we'll get you on the schedule quickly.
Yes — for a new-system installation or replacement: a no-charge in-home consultation and a written, itemized quote, with no high-pressure sales pitch. Repair diagnostics are a paid service visit.
Tell us about your space — we'll come out, measure, and send a written quote.
Tell us what your system is doing. We'll point you in the right direction.