Rooftop unit installs
with DOB filings
in Manhattan
done right, the first time
Engineering-grade RTU installation with full NYC DOB permit coordination, built for Manhattan's dense commercial buildings. No shortcuts, no failed inspections.
Our Commercial RTU DOB Permit Installation Services in Manhattan
From engineering spec to final sign-off — Denair manages every step of new RTU installation and the DOB paperwork Manhattan buildings require.
DOB Filing & Permit Coordination
We prepare and file the mechanical permit documentation your Manhattan project requires, coordinating directly with expeditors so installation isn't delayed by paperwork.
Engineering Spec & Load Calculations
Every install starts with a proper load calculation and equipment spec — sized to your building's actual usage, not a rough estimate that leaves you over- or under-cooled.
Crane & Rigging Rooftop Install
We manage crane logistics, street permits, and rooftop rigging for Manhattan sites — including the tight-access and street-closure coordination dense blocks require.
Full RTU Replacement
Complete removal of the old unit and installation of the new, with all electrical, ductwork, and curb adapter work included as part of one coordinated project.
Startup Commissioning & TAB
Every install ends with full startup commissioning and a certified test-and-balance report, confirming the unit performs to spec before we call the job done.
LL97 Assessment With New Install
New equipment is a natural point to address LL97 exposure. We size and spec installations with your building's emissions profile and compliance deadlines in mind.
From permit to powered up
One partner handles every step, including the paperwork.
Site & load assessment
A certified technician surveys your Manhattan rooftop and mechanical space, documenting structural access, electrical capacity, and building load to inform proper equipment sizing.
Engineering spec & permit filing
We prepare equipment specifications and file the required DOB mechanical permits, managing expeditor coordination so your project isn't held up in the review queue.
Fixed-price installation proposal
You receive a clear, itemized quote covering equipment, rigging, electrical, and permit costs — no hidden line items added once the crane shows up.
Installation, commissioning & sign-off
Certified technicians complete the install, perform startup commissioning and TAB testing, and close out the permit with final DOB inspection sign-off.
Why Manhattan Facility Managers Choose Denair
Factory-Certified Expertise
Factory-trained on Carrier, Trane, AAON, Daikin, Mitsubishi Electric, and LG VRF systems.
Same-Day Manhattan Response
27 technicians in the field, on-site in Manhattan within 4 hours, day or night.
Fixed, Transparent Pricing
You approve the cost before we start — no hourly surprises, no hidden charges.
NYC Code & LL97 Expertise
We understand how new installs intersect with DOB permitting and Local Law 97 requirements.
Success Stories
See how NYC property owners and facility managers count on Denair HVAC.
Meet the Denair NYC Team
Denair HVAC is built by people who've spent their careers keeping NYC buildings comfortable — from the engineers who size every system to the technicians who show up when it matters most.
Questions we hear every day
Straight answers about commercial rtu dob permit installation in Manhattan — no marketing fluff.
How long does DOB permit filing add to a Manhattan RTU installation timeline?
Does Denair handle the crane and street permits for a Manhattan rooftop install?
How does a new RTU installation affect NYC Local Law 97 compliance?
What does a commercial RTU installation with DOB permitting cost in Manhattan?
Can Denair manage a multi-unit RTU replacement project across a Manhattan building?
Serving Manhattan and the Greater NYC Metro
From Manhattan's dense commercial corridors to suburban commercial facilities across Nassau and Westchester, Denair HVAC's certified installation technicians cover 11 regions with the same DOB permit and rigging expertise. We've been installing NYC and metro-area rooftop equipment for 19 years.
Awards and Recognition
Inc. 5000 Award
Recognized as one of America's fastest-growing companies.
OSHA 40-Hour Certified
Full team compliance with federal workplace safety standards.
Licensed Mechanical Contractor
Registered HVAC contractor fully licensed for NYC commercial work.
Factory-certified to repair the world's
leading rooftop unit brands
Authorized and factory-trained on the RTU manufacturers Manhattan buildings rely on most. This means access to proprietary diagnostic software, genuine parts, extended warranty programs, and the engineering support your rooftop unit deserves.
Get Your Manhattan RTU Installation Assessment — No Obligation
Tell us about your building and project scope. A Denair specialist will respond within one business day with a clear assessment and fixed-price proposal covering equipment, permitting, and installation. No pressure, no upsell — just straight answers from people who know Manhattan buildings and NYC permitting.