Boiler Installation
& Repair
New York City
From high-efficiency condensing boilers to steam system repairs — we install, service, and maintain commercial and residential boilers for hydronic heating, radiant floors, and domestic hot water across NYC.
24/7 Emergency Service
95%+ Efficiency Units
4.9 on Google & Yelp
Full DOB Permit Support
Your old boiler is burning money and failing
NYC buildings depend on boilers for heat and hot water. When yours is 20+ years old, running at 65% efficiency, and breaking down every winter — you are paying twice: once for wasted gas, again for emergency repairs.
No heat in the middle of winter
Your boiler died on the coldest night of the year. Tenants are calling, pipes could freeze, and your emergency boiler guy retired last year
Gas bills are insane
Your 25-year-old boiler runs at 65% efficiency. A modern condensing unit runs at 95%+ — that is 30-40% less gas for the same amount of heat
Uneven heating throughout the building
Some radiators are scalding while others are ice cold. The boiler cycles on and off constantly. The system was never properly balanced or the controls are outdated
Strange noises and leaks
Banging pipes, hissing radiators, and puddles under the boiler are not normal. They are warnings that components are failing and a major breakdown is coming
Our 30-year-old cast iron boiler was costing us $3,500 a month in gas during winter. Art HVAC replaced it with a Navien condensing unit. Gas bill dropped to $2,100. The system paid for itself in two winters.
WHAT WE DO
Complete Boiler Service for Every Building
Hot water boilers, steam boilers, combi units, and radiant floor systems — we handle every boiler technology used in NYC buildings.
Boiler Installation & Replacement
Condensing, Cast Iron & Combi
We size, select, and install commercial and residential boilers — high-efficiency condensing units, cast iron replacements, and combi boilers that provide both heat and hot water. Full gas, venting, and permit service included.
Boiler Repair & Emergency Service
All Brands, All Fuel Types
No heat, leaking, short-cycling, error codes, pilot problems, and strange noises — we diagnose and repair every boiler issue. 24/7 emergency service during heating season with same-day dispatch.
Boiler Maintenance & Tune-Up
Efficiency, Safety, Longevity
Annual boiler tune-ups improve efficiency, catch safety issues, and extend equipment life. We clean the heat exchanger, test safety controls, check for CO leaks, verify combustion efficiency, and calibrate controls.
AUTHORIZED DEALER
We Install and Service the Industry's Best Boilers
We are authorized installers for every major boiler brand — from high-efficiency wall-hung condensing units to heavy-duty commercial cast iron systems.
#1 condensing boiler in North America
NYC building heating since 1881
Reliable American heating
German precision engineering
Commercial heating leader
Innovative combi technology
CLIENT TESTIMONIALS
Why NYC Building Owners Trust ART HVAC
Real boiler projects. Real gas savings. Real comfort.
HOW IT WORKS
From Cold Building to Reliable Heat
Whether it is an emergency repair or a full boiler replacement — we restore your heat as fast as possible.
Assessment & Sizing
We evaluate your current system, calculate your building's heating load, and recommend the right boiler type and size — with an upfront, fixed-price quote.
Remove & Install
We disconnect and remove the old boiler, install the new system with proper gas, water, and venting connections, and handle all DOB permits.
Commission & Test
We fire the boiler, run combustion analysis, test all safety controls, verify heat delivery to every zone, and check for CO leaks.
Warranty & Support
We register your warranty, provide maintenance recommendations, and offer ongoing support. Every installation is backed by our workmanship guarantee.
FAQ
Questions We Hear Every Day
Practical answers about boiler installation and repair.
For most NYC buildings, a condensing boiler is the best choice — 95%+ efficiency and 30-40% gas savings over old cast iron units. For larger buildings with steam radiator systems, we can install modular condensing boilers or upgrade your controls for better efficiency. Combi boilers are ideal for smaller spaces that need both heat and hot water from one unit.
Upgrading from a 65% efficiency cast iron boiler to a 95% condensing unit typically saves 30-40% on your gas bill. For a building spending $3,000/month on gas during winter, that is $900-1,200 per month in savings. Most boiler upgrades pay for themselves within 2-4 heating seasons.
It depends on the location. Leaks from valves, fittings, and circulators are usually repairable. Leaks from the heat exchanger or the boiler body itself typically mean the unit needs replacement — a cracked heat exchanger is also a carbon monoxide risk. We will give you an honest assessment and never recommend replacement if a repair will solve the problem.
A residential boiler swap (removing old, installing new) takes 1-2 days. A commercial installation or conversion from steam to hot water can take 3-7 days depending on complexity. We schedule installations to minimize downtime — ideally in spring or fall when heating is not critical.
Yes. All boiler installations in NYC require a DOB work permit, gas permit, and final inspection. For buildings with steam systems, additional filings may be required. We manage the entire permitting process and coordinate all inspections — you never deal with the paperwork.
Still have questions? Contact us
Stop Feeding an Old Boiler.
Become a Upgrade to Efficiency..
Get a Free Boiler Assessment.
Our licensed plumbers will assess your current system, calculate your savings with a modern boiler, and deliver a transparent quote. Free assessment, no pressure, full DOB permit support.