Make-up air unit
repair built
for Manhattan
buildings under pressure
When your make-up air unit fails, building pressurization, exhaust systems, and tenant comfort all suffer. Same-day response, factory-certified repair, five boroughs.
Our Make-Up Air Unit Repair Services in Manhattan
Comprehensive maintenance, repair, and replacement — keeping make-up air units running year-round across Manhattan's commercial buildings.
Emergency MAU Repair
A failed make-up air unit throws off building pressurization fast. Our certified technicians reach Manhattan buildings typically within 4 hours, stocked to diagnose and repair on the first visit.
Airflow & Building Pressurization Diagnosis
MAU failures often show up as comfort complaints or stairwell pressure issues elsewhere in the building — we diagnose the actual airflow balance problem, not just the unit itself.
Preventative Maintenance Contracts
Custom maintenance plans starting from $396/year keep filters, belts, dampers, and burners tuned ahead of Manhattan's seasonal demand swings.
LL97 Compliance Optimization
MAU units condition large volumes of outside air continuously — a major and often overlooked energy load. We assess your carbon exposure and implement fixes that reduce Local Law 97 fines.
MAU Replacement & Retrofits
When repair no longer makes economic sense, we handle full replacement — engineered to your building's current airflow requirements, with NYC DOB filings and startup commissioning included.
Air Balance & TAB Reporting
Certified TAB reports delivered post-service confirm your make-up air system meets design specification and code — documentation your building manager needs on file.
From breakdown to back online
One partner handles every step. Here's how we do it.
Same-day site assessment
You call, we respond. A certified technician reaches your Manhattan location within 4 hours — equipped with diagnostic tools and common MAU parts to resolve most issues on the first visit.
Root cause diagnosis
We don't replace parts until we understand the failure. A full diagnostic — airflow, electrical, mechanical — identifies the real cause rather than masking symptoms that resurface later.
Fixed-price proposal
Before a wrench turns, you receive a clear, itemized quote with no hidden line items. What we quote is what you pay — we absorb any unintended costs.
Certified repair & commissioning
Factory-certified technicians execute the repair to OEM specification, followed by a full startup and commissioning check — verifying airflow and performance before we leave.
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 repairs intersect with Local Law 97 and DOB 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 make-up air unit repair in Manhattan — no marketing fluff.
How quickly can Denair respond to a make-up air unit failure in Manhattan?
Is Denair certified to repair the MAU brands used in Manhattan buildings?
How does make-up air unit repair relate to Local Law 97 compliance?
What does make-up air unit repair cost in Manhattan?
Can Denair handle full make-up air unit replacement on a Manhattan building?
Serving Manhattan and the Greater NYC Metro
From Midtown office towers to commercial buildings across Nassau and Westchester, Denair HVAC's certified MAU technicians cover 11 regions with the same 24/7 availability. We've been working NYC and metro-area buildings for 19 years — and we understand the access, logistics, and code requirements that make every market different.
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 install and service the world's
leading make-up air unit brands
Authorized and factory-trained on the make-up air unit manufacturers Manhattan buildings rely on most. This means access to proprietary diagnostic software, genuine parts, extended warranty programs, and the engineering support your ventilation system deserves.
Get Your Manhattan Make-Up Air Unit Assessment — No Obligation
Tell us about your building and equipment. A Denair specialist will respond within one business day with a clear assessment and fixed-price proposal. No pressure, no upsell — just straight answers from people who know make-up air systems and Manhattan buildings.