Your Building Won’t Pass LL97
Without Balanced Systems.
NCI-certified air and water TAB across all five NYC boroughs. TAB reports structured for LL97 compliance filings, ConEd/NYSERDA incentives, and post-retrofit commissioning — backed by Denair’s decade of engineering-grade results.
Trusted By New York City’s Top Businesses & Property Owners
What Air & Water Testing and Balancing Actually Fixes
Most HVAC systems don't meet design specs at startup. TAB corrects that — measuring and adjusting both airflow and water flow until every zone performs exactly as designed.
The result: lower energy bills, fewer comfort complaints, and documentation ready for LL97 compliance filings.
We review design drawings, equipment schedules, and specified CFM/GPM targets before a single instrument touches your system.
Airflow at every grille and diffuser. Water flow at every coil, pump, and terminal. Calibrated instruments, no estimates.
Dampers, VAVs, balancing valves, and pump speeds adjusted until as-found readings match design specifications system-wide.
Complete stamped report with as-found and as-left data — essential for LL97 compliance filings, commissioning records, and ConEd/NYSERDA applications.
Comprehensive Air & Water TAB Services
Every service performed by NCI-certified technicians — covering both air distribution and hydronic systems in a single coordinated engagement.
NEBB Certified Testing and Balancing
New HVAC systems will typically not meet design specifications upon startup. Adjusting the system to design specifications requires testing, adjusting, and balancing (TAB) of control devices.
Cleanroom Performance Testing
Cleanrooms are used throughout the medical, pharmaceutical, and semiconductor industries. These rooms must meet regulatory ISO 14644 standards of performance and be regularly tested to confirm compliance.
Blower Door & Duct Leakage Testing
Testing designed to measure the air tightness of building envelopes and ductwork in order to improve energy efficiency, meet design specifications, and locate areas of infiltration.
Building Commissioning
Building commissioning (Cx) is a professional practice that facilitates the planning, design, construction, installation and testing verification, documentation, and operation of facilities and systems to conform to the Owner’s Project Requirements (OPR).
Aeroseal Duct Sealing
Aeroseal is a patented technology that seals ductwork from the inside out. This technology can be used on every part of a ducted system, even those seemingly inaccessible areas in both new and existing buildings.
NADCA Certified Duct and Coil Cleaning
Elevate your environment with duct and coil cleaning. Improve air quality, boost energy efficiency, and create a healthier workspace for your employees and customers. A clean system means a more productive and welcoming atmosphere for everyone.
Built for NYC Buildings.
Not General Contractors.
Facility managers across all five boroughs trust Denair because we understand the complexity of commercial HVAC in New York City — the codes, the buildings, and the stakes.
Our TAB reports are structured to support Local Law 97 documentation — reducing your exposure to carbon penalty fines.
Most contractors handle one or the other. Denair coordinates both air and hydronic TAB in a single mobilization, saving time and reducing disruption.
Our team holds active NCI certifications with factory training across AAON, Trane, LG, Mitsubishi, and more.
TAB findings feed directly into your preventative maintenance program and BMS strategy. We don’t disappear after the report.
Ready to Optimize Your Building’s HVAC Performance?
Average 30% energy cost reduction across all five NYC boroughs — with TAB documentation ready for LL97 compliance filings.
How it Works
From first call to final report — a clear, accountable process with no surprises.
We review existing plans, equipment schedules, and design CFM/GPM targets before mobilizing.
Certified technicians measure every air and water point using calibrated instruments.
Dampers, valves, and controls adjusted until measured values match design — then verified system-wide.
A complete, signed report with as-found and as-left data — ready for records and compliance files.
Three Outcomes. Every Engagement.
Coordinated air and hydronic balancing delivers measurable returns across the three things NYC facility managers care about most.
- Consistent temperature and airflow in every zone
- No more hot spots, dead zones, or pressure complaints
- Improved indoor air quality and ventilation throughout
- Healthier environment for occupants and tenants
- Eliminate energy waste from over-pressurized systems
- Extended HVAC equipment lifespan through proper loading
- ConEd / NYSERDA incentive eligibility with TAB documentation
- Clear performance baseline for future BMS optimization
- TAB reports structured for LL97 annual filing requirements
- Reduced exposure to carbon penalty fines
- Post-commissioning documentation for capital improvements
- Audit-ready records for building operations teams
NCI-Certified Air Balancers
Our technicians hold active certifications from the National Comfort Institute — the industry standard for professional TAB performance. Every air test and balance engagement is led by a certified technician.
Affiliations
Common Questions About Air & Water Testing and Balancing
Facility managers across NYC ask us these every day. Here's what you need to know.
Ready to get started?
Schedule a no-obligation TAB assessment for your building. We cover all five NYC boroughs.
Request an AssessmentAir testing and balancing (TAB) is the process of measuring, adjusting, and documenting the airflows in an HVAC system to ensure each space receives the correct volume of conditioned air as specified in the design. It covers supply air, return air, exhaust, and outdoor air systems. When facility managers need someone to air test and balance their building, they're typically dealing with comfort complaints, rising energy costs, or a post-construction commissioning requirement — all of which TAB directly addresses.
Hydronic balancing involves measuring and adjusting water flow rates (GPM) through chilled water, heating hot water, and condenser water loops. We verify pump performance, adjust balancing valves at each terminal unit and coil, and confirm differential pressures are holding setpoints under varying load conditions. The goal is equal, design-specified flow to every part of the system — eliminating zones that are starved or flooded.
Yes. A properly balanced HVAC system — both air and hydronic — runs more efficiently, consumes less energy, and directly reduces your building's carbon footprint. Our TAB reports provide the documentation baseline needed for LL97 compliance filings and ConEd/NYSERDA incentive applications.
Timeline depends on building size and system complexity. A single-floor commercial space may take one day; a multi-floor building with both air and hydronic systems can require 3–7 days. We schedule work to minimize operational disruption and provide a clear timeline during the initial assessment phase.
Yes. Denair HVAC provides air and water testing and balancing services across Manhattan, Brooklyn, Queens, the Bronx, and Staten Island. Our Brooklyn-based team is positioned to respond quickly across the full metro area.
Absolutely. We're factory-certified on LG, Mitsubishi, Daikin, and other VRF systems, and experienced with chiller plant re-commissioning. Post-installation TAB is one of the most important steps to confirm new equipment is delivering designed performance — and we handle both air and hydronic re-balancing as part of our full-lifecycle service approach.
Results From the Field
What Our Customers Say
Don’t take our word for it — here’s what facility managers across NYC have to say.
I was impressed with the quality and knowledge of the engineer who assessed the property. His results were thorough and clearly explained. A team you can genuinely rely on.
During my years as a project manager, there was only one company that came to mind when we needed balancing work done. Always consistent and reliable.
Used Denair for a very large project covering both water and air balancing. Was very happy with the results — professional, detailed, and delivered on time.
Schedule Your Air & Water Testing and Balancing Assessment
Tell us about your building and we'll put together a clear scope and timeline. No obligation. We serve all five NYC boroughs.