Air Testing &
Balancing Services
Precision airflow measurement and adjustment for commercial HVAC systems across New York City. Improve comfort, reduce energy waste, and extend system life — backed by Denair's decade of engineering-grade results.
24/7 Emergency Response · DenairHVAC.com
What Air Testing & Balancing Actually Fixes
To ensure the optimal performance and efficiency of your HVAC system, thorough air testing and balancing isn't a nice-to-have — it's the foundation of a reliable, code-compliant commercial building.
At Denair HVAC, our technicians are skilled in measuring and adjusting airflows to ensure your system is delivering the precise air distribution each zone demands. We use advanced instruments to perform accurate CFM measurements and static pressure readings — then make the necessary adjustments to achieve optimal performance.
During the process, we identify imbalances and system deficiencies that drive up your energy costs and create comfort complaints. We correct them systematically — so your HVAC operates at peak efficiency, not just peak output.
We measure actual airflow at every supply and return grille using calibrated instruments — no guessing, no estimates.
We identify zones receiving too much or too little conditioned air — a common source of comfort complaints and energy waste.
Our technicians adjust dampers, VAVs, and terminal units to achieve designed airflow levels across the entire system.
You receive a complete TAB report with before/after readings — essential for LL97 compliance documentation and future service records.
Comprehensive ATB Services
Every service is performed by certified commercial HVAC technicians — not generalists. We bring the tools and the expertise that complex NYC buildings require.
Supply & Return Airflow Measurement
Accurate CFM readings at every grille, diffuser, and register using calibrated flow hoods. Compared against design specifications to reveal any shortfall.
Static Pressure Testing
We measure duct static pressure at critical points across the system to identify restrictions, leaks, and fan performance issues before they escalate.
VAV & Terminal Unit Balancing
Variable air volume boxes and fan-powered terminals are calibrated to deliver zone-specific airflow — ensuring no space is over- or under-conditioned.
Exhaust & Ventilation Verification
Exhaust fans, kitchen hoods, and outdoor air intakes are tested against code requirements and ASHRAE 62.1 minimums — critical for LL97 compliance.
TAB Report & Documentation
You receive a complete, stamped test-and-balance report with as-found and as-left conditions — the record your building operations team and compliance auditors need.
Post-Retrofit Re-Balancing
After VRF installations, ductwork modifications, or BMS upgrades, we re-balance the full system to verify the new configuration is operating as designed.
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 requirements — reducing your exposure to carbon penalty fines.
Certified on AAON, Trane, LG, Mitsubishi, Daikin, and more — we balance what others can't touch.
We don't disappear after the report. Denair ties ATB findings into your preventative maintenance program and BMS controls strategy.
24/7 emergency support. Transparent reporting. A dedicated point of contact — not a call center handoff.
Average energy cost reduction achieved through our automation and control upgrades — with ATB as a critical first step.
Full service coverage across Manhattan, Brooklyn, Queens, the Bronx, and Staten Island.
Emergency response available around the clock — because system failures don't follow business hours.
TAB documentation supports your LL97 annual compliance filings and helps avoid carbon penalty exposure.
How it Works
From first call to final report — a clear, accountable process with no surprises.
We review your existing plans, equipment schedules, and design CFM targets before arriving on site.
Certified technicians measure every supply, return, and exhaust point using calibrated instruments.
We adjust dampers, terminal units, and controls until measured values match design — then verify system-wide.
A complete, signed report with as-found and as-left data — ready for your records and compliance files.
What You Gain From Proper Air Balancing
Investing in air testing and balancing delivers measurable returns across comfort, efficiency, and compliance — not just a one-time fix.
- Consistent temperature and airflow in every zone — no more hot spots or dead zones
- Improved indoor air quality and ventilation — healthier occupant environments
- Reduced energy waste from over-pressurized or inefficient duct systems
- Extended HVAC equipment lifespan through proper airflow loading
- LL97 compliance documentation — reduced exposure to carbon penalty fines
- ConEd / NYSERDA incentive eligibility — energy efficiency documentation support
- Fewer tenant comfort complaints — measurable improvement in facility management
- Clear baseline for future BMS controls optimization and automation upgrades
Common Questions About Air Testing & Balancing
Facility managers across NYC ask us these every day. Here's what you need to know.
Air 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.
Common signs include uneven temperatures between floors or zones, persistent tenant comfort complaints, unusually high energy bills, excessive humidity, and HVAC systems running longer than expected. Any significant retrofit, new equipment installation, or ductwork modification also warrants a full re-balance.
Yes. A properly balanced HVAC system runs more efficiently and consumes less energy — directly reducing your building's carbon footprint and helping you meet LL97 emissions limits. Our TAB reports also provide the documentation baseline needed for 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 office or mixed-use building can require 2–5 days. We schedule work to minimize operational disruption, and we'll give you a clear timeline during the assessment phase.
Yes. Denair HVAC provides air 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 trained on Honeywell and 75F BMS platforms. Post-installation TAB is one of the most important steps to confirm new systems are delivering designed performance, and we handle it as part of our full-lifecycle service approach.
Get Started Today
Schedule Your Air Testing & Balancing Assessment
Call us at (212) 776-1333 · DenairHVAC.com
Let's Talk About
Your Building.
Whether you're navigating LL97 compliance, planning a capital improvement project, or dealing with a system that can't wait — our team is ready to respond.
- 24/7 emergency response across all five NYC boroughs
- LL97 compliance expertise built into every engagement
- 10+ years partnering with NYC facility managers
- Proven 30% average reduction in energy costs