Grease Duct Fabrication
Custom in-shop and on-site fabrication of stainless steel and carbon steel grease ducts sized to your kitchen's exhaust demands, ensuring tight welds and zero grease leakage paths for full NYC compliance.
Manhattan's dense restaurant corridors and high-rise kitchens demand grease duct systems built to code and engineered to last. Denair HVAC delivers expert grease duct installation tailored to NYC fire codes and DOB requirements—helping food service operators stay compliant, reduce fire risk, and keep commercial kitchens running safely through every season.
Comprehensive grease duct solutions for Manhattan commercial kitchens, from design and fabrication to compliant installation and inspection.
Custom in-shop and on-site fabrication of stainless steel and carbon steel grease ducts sized to your kitchen's exhaust demands, ensuring tight welds and zero grease leakage paths for full NYC compliance.
Full vertical and horizontal grease duct runs from commercial kitchen hoods to rooftop exhaust fans, navigating Manhattan's dense building cores while meeting NFPA 96 clearance and access panel requirements.
Coordinated installation of UL-listed fire suppression systems within grease duct assemblies, ensuring seamless integration with hood systems and compliance with NYC Fire Department regulations.
Construction of code-compliant enclosures and rated shaft systems around grease ducts passing through floors and walls, protecting building structure and satisfying DOB inspection requirements.
Thorough pre-inspection review and documentation preparation to ensure your grease duct system passes NYC DOB and FDNY inspections on the first visit, minimizing operational downtime.
Assessment and full replacement of aging or non-compliant grease duct systems in existing Manhattan food service facilities, bringing older kitchens up to current code without unnecessary full-build disruption.
Our engineers visit your Manhattan location to evaluate the kitchen layout, hood placement, vertical shaft routing, and applicable NYC DOB and NFPA 96 requirements before any work begins—eliminating surprises mid-project.
See how Denair HVAC has helped Manhattan restaurants and food service operators pass inspections and stay compliant.
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"Impeccable install. You can tell they're pros the moment they walk in."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Denair is the most dependable HVAC service company in New York!"
"They have the best Engineering Service I have ever seen; they are always available on request and perform the maintenance in the most efficient way. Great Service."
"I didn't even know about their referral program sending DENAIR to one of my commercial tenants. It was a nice surprise to get paid for referral. Based on the tenant's feedback, the job was well-done. Now it's no brainer to recommend DENAIR to all my tenants"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Great company, our office was getting hotter by the minute. Denair had a tech on site with in the hour and the ac working perfect in two hours"
"I recently used Denair for some repairs to my small two-story office building, and I have to say they are the most honest, hard-working and value focused HVAC provider I have ever experienced! Not only was the price competitive, but more importantly they helped reduce my energy costs from an..."
"What a great service. I randomly called to get multiple system inspected in my building. They came on time, done a great job and provided a detailed report. I love their transparency."
"Crew was respectful, fast, and left our place spotless. Five stars."
"excellent work and quality"
"Dennis was always available when I called on him. Never was any additional work generated on any quote/contract awarded. Reliable, expert and a pleasure to work with. A real value!"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Great reliable HVAC company, a very rare thing to say these days — the pricing is very competitive and the work is reliable. The staff is professional and courteous, they clean up after themselves and always answer. I would recommend them!"
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"Impeccable install. You can tell they're pros the moment they walk in."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Denair is the most dependable HVAC service company in New York!"
"They have the best Engineering Service I have ever seen; they are always available on request and perform the maintenance in the most efficient way. Great Service."
"I didn't even know about their referral program sending DENAIR to one of my commercial tenants. It was a nice surprise to get paid for referral. Based on the tenant's feedback, the job was well-done. Now it's no brainer to recommend DENAIR to all my tenants"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Great company, our office was getting hotter by the minute. Denair had a tech on site with in the hour and the ac working perfect in two hours"
"I recently used Denair for some repairs to my small two-story office building, and I have to say they are the most honest, hard-working and value focused HVAC provider I have ever experienced! Not only was the price competitive, but more importantly they helped reduce my energy costs from an..."
"What a great service. I randomly called to get multiple system inspected in my building. They came on time, done a great job and provided a detailed report. I love their transparency."
"Crew was respectful, fast, and left our place spotless. Five stars."
"excellent work and quality"
"Dennis was always available when I called on him. Never was any additional work generated on any quote/contract awarded. Reliable, expert and a pleasure to work with. A real value!"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Great reliable HVAC company, a very rare thing to say these days — the pricing is very competitive and the work is reliable. The staff is professional and courteous, they clean up after themselves and always answer. I would recommend them!"
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"Impeccable install. You can tell they're pros the moment they walk in."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Denair is the most dependable HVAC service company in New York!"
"They have the best Engineering Service I have ever seen; they are always available on request and perform the maintenance in the most efficient way. Great Service."
"I didn't even know about their referral program sending DENAIR to one of my commercial tenants. It was a nice surprise to get paid for referral. Based on the tenant's feedback, the job was well-done. Now it's no brainer to recommend DENAIR to all my tenants"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Great company, our office was getting hotter by the minute. Denair had a tech on site with in the hour and the ac working perfect in two hours"
"I recently used Denair for some repairs to my small two-story office building, and I have to say they are the most honest, hard-working and value focused HVAC provider I have ever experienced! Not only was the price competitive, but more importantly they helped reduce my energy costs from an..."
"What a great service. I randomly called to get multiple system inspected in my building. They came on time, done a great job and provided a detailed report. I love their transparency."
"Crew was respectful, fast, and left our place spotless. Five stars."
"excellent work and quality"
"Dennis was always available when I called on him. Never was any additional work generated on any quote/contract awarded. Reliable, expert and a pleasure to work with. A real value!"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Great reliable HVAC company, a very rare thing to say these days — the pricing is very competitive and the work is reliable. The staff is professional and courteous, they clean up after themselves and always answer. I would recommend them!"
Manhattan commercial kitchens need a contractor who understands NYC codes, tight building constraints, and zero-delay project delivery.
Deep knowledge of NYC DOB, FDNY, and NFPA 96 grease duct requirements keeps your Manhattan project compliant from day one.
Simultaneous shop fabrication and on-site installation cuts project timelines, minimizing kitchen downtime across Manhattan locations.
All unintended costs are covered at our expense—no surprise invoices after installation is underway, ever.
Founded in 2007, Denair HVAC has completed over 400 projects across New York, earning recognition as one of America's fastest-growing companies.
Experienced professionals dedicated to safe, compliant grease duct installation across Manhattan.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with a single truck and a vision to deliver honest, high-quality mechanical contracting to New York City. With over 17 years of hands-on HVAC industry experience, he brings deep expertise in commercial kitchen exhaust systems, grease duct compliance, and full-scale mechanical installations across Manhattan and the five boroughs. Under his leadership, Denair grew from a one-man operation to a $2M+ revenue company recognized by Inc. 5000 as one of America's fastest-growing businesses. Dennis sets the standard for code-compliant, value-engineered solutions that protect both clients and buildings.
Application Engineer
Ramil leads the engineering and technical planning behind Denair HVAC's grease duct and mechanical system installations. He designs exhaust duct systems tailored to each building's structural layout and code requirements, selecting compliant equipment and preparing detailed shop drawings that streamline DOB approvals. Ramil's background in HVAC system design ensures every grease duct installation in Manhattan is engineered for long-term reliability, proper grease drainage slope, required clearances, and full compliance with NFPA 96 and NYC fire codes. His technical oversight is a key reason Denair projects consistently pass inspections on the first submission.
Service Manager
Thomas oversees all field service operations at Denair HVAC, ensuring grease duct installation crews operate on schedule and deliver consistent quality across every Manhattan project. He coordinates technician dispatch, manages job-site communication between clients and field teams, and monitors installation quality from first measurement to final inspection handoff. His focus on fast response times and efficient scheduling means Manhattan restaurant and facility operators experience minimal kitchen downtime during duct installation. Thomas is also the point of contact for any post-installation service needs, keeping systems performing reliably long after project close-out.
Lead Estimator
Farrukh has been with Denair HVAC since 2010, bringing over a decade of estimating expertise to every grease duct installation bid. He is responsible for preparing detailed, accurate proposals for Manhattan kitchen exhaust projects—breaking down scope, identifying value engineering opportunities, and providing alternates that help clients save without compromising on code compliance or quality. Farrukh's individual approach to each bid ensures clients understand exactly what they are paying for, with no hidden costs. His thorough knowledge of NYC ductwork costs and vendor relationships allows Denair to consistently offer pricing that beats the competition in 90% of cases.
Grease ducts in commercial kitchens must comply with NFPA 96 (Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations) and local building codes. In New York City, the NYC Mechanical Code and NYC Fire Code also apply, requiring continuous liquid-tight welds, minimum 16-gauge steel construction, proper clearances from combustibles, and mandatory access panels at specified intervals for cleaning and inspection.
Speak with our NYC-based experts for a free consultation and estimate.
Denair HVAC installs code-compliant grease duct systems across Manhattan and the greater New York metropolitan area.
11 Regions Served
Service Area
Mon–Fri, 8AM–6PM
Availability
4.7★ on Google
Customer Rating
Contact us to confirm coverage and schedule your free grease duct estimate.
Recognized as one of America's fastest-growing companies.
Full OSHA 40-hour safety certification for all field personnel.
Licensed and registered HVAC contractor operating in New York.
Fill out the form below and a Denair HVAC specialist will reach out to discuss your Manhattan kitchen exhaust project, walk you through code requirements, and provide a detailed, fixed-price proposal at no cost to you.
For immediate assistance, feel free to give us a direct call at 718-791-5074 You can also send us a quick email at
For immediate assistance, feel free to give us a direct call at 718-791-5074 You can also send us a quick email at