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NYC Local Law 87 Energy Audits & HVAC Retro-Commissioning
If your building is over 50,000 square feet, Local Law 87 requires a periodic ASHRAE Level II energy audit and retro-commissioning filed with the NYC Department of Buildings. HVAC is the largest piece of that report. Com+ Mechanical handles the assessment, the corrective work, and the documentation so you file on time and avoid violations.
Compliance Risks & What's at Stake
Missed or late EER filing
Failing to submit the Energy Efficiency Report by your building's deadline can result in a Department of Buildings violation and recurring monetary penalties that escalate for each additional year of non-compliance. A late HVAC assessment is one of the most common reasons reports slip.
Incomplete or rejected report
An EER that is missing required HVAC audit detail, retro-commissioning verification, or proper professional certification can be deemed incomplete by DOB and treated like a non-filing, exposing the owner to the same penalties until corrected.
Retro-commissioning items not actually corrected
LL87 retro-commissioning is more than a checklist — it requires verifying that deficiencies (bad set points, failed sensors, broken sequences, disabled economizers) are addressed. Skipping the corrective HVAC work risks an unsupportable report and wasted energy spend.
Surprise capital costs at the deadline
Owners who wait until the compliance year often discover aging HVAC equipment or controls that need significant work, with no runway to budget or phase it. An early assessment turns a deadline scramble into a planned capital project.
Overlap with other NYC energy mandates
LL87 findings feed directly into emissions and benchmarking obligations such as Local Law 97 and Local Law 84/133. Treating LL87 in isolation means missing efficiency upgrades that also reduce future carbon-penalty exposure.
No documentation trail for your filing professional
Your registered design professional or approved auditor can only certify what is documented. Without organized HVAC test data, equipment inventories, and corrective-action records, the filing stalls and costs more to assemble after the fact.
What Local Law 87 Requires — and Why HVAC Is Central
New York City Local Law 87 (part of the Greener, Greater Buildings Plan) requires covered buildings to perform a periodic energy audit and retro-commissioning of base building systems, and to file an Energy Efficiency Report (EER) with the NYC Department of Buildings. It applies to buildings over 50,000 gross square feet, and to multiple buildings on a single tax lot that together exceed 100,000 square feet. Each building reports on a recurring ten-year cycle, and the compliance year is determined by the last digit of the building's tax block number. The energy audit must meet the ASHRAE Level II standard (or an approved equivalent) and evaluate all major systems — heating, ventilation, and air conditioning, domestic hot water, the building envelope, lighting, and electrical. Retro-commissioning then verifies that existing systems are actually operating as intended: correct control sequences, calibration, scheduling, and HVAC temperature and humidity set points and setbacks. Because heating and cooling typically drive the largest share of a commercial building's energy use, the HVAC findings are usually the heart of both the audit and the retro-commissioning report. Com+ Mechanical is a commercial HVAC contractor serving the NYC metro; we partner with building owners, property managers, and facilities teams to assess HVAC systems against LL87, perform the retro-commissioning corrections, implement efficiency upgrades, and produce the HVAC documentation your filing professional needs for the EER.
How Com+ Helps You Comply
Why Owners Choose Com+ for LL87 HVAC Work
Our Simple Process
From call to comfort in 4 easy steps
1. Assess
We perform an ASHRAE Level II-aligned HVAC assessment and retro-commissioning investigation — inventorying equipment, reviewing controls and sequences, testing performance, and confirming your building's compliance year and reporting obligations.
2. Plan
We deliver a prioritized roadmap of retro-commissioning corrections and energy conservation measures, each with scope, estimated savings, and payback, so you can decide what to implement now versus phase ahead of the deadline.
3. Implement
Our technicians execute the approved retro-commissioning corrections and HVAC upgrades — controls optimization, calibration, set point and scheduling fixes, and equipment retrofits — with functional testing to verify results.
4. Document
We compile the HVAC findings, test results, corrective actions, and ECM data into a documentation package and coordinate with your registered design professional or approved energy auditor / RCx agent to support the EER submission to DOB.
Types of Systems We Install
Building Automation & HVAC Controls Optimization
Modern controls are where much of LL87 retro-commissioning happens. Correcting schedules, set points, sequences, and sensor calibration restores systems to design intent and is often the fastest, lowest-cost path to documented efficiency gains.
- •Optimized scheduling, set points, and setbacks
- •Sensor recalibration and sequence correction
- •Economizer and demand-control ventilation tuning
- •Trend logging to verify and sustain performance
High-Efficiency Heating & Cooling Equipment
When the assessment shows aging or oversized equipment, upgrading to high-efficiency boilers, chillers, rooftop units, or heat pumps reduces energy use, strengthens your report, and lowers future emissions exposure under related NYC laws.
- •High-efficiency boilers and condensing systems
- •Modern chillers and rooftop units
- •Heat pump and electrification options
- •Right-sized replacements based on actual load
Pumps, Fans & Variable-Speed Drives
Constant-speed pumps and fans are a frequent source of waste flagged in energy audits. Adding variable-frequency drives and optimizing distribution matches output to demand and delivers measurable, reportable savings.
- •Variable-frequency drives on pumps and fans
- •Hydronic and air-distribution balancing
- •Reduced motor energy at part load
- •Quieter, more stable operation
Why Com+ Mechanical
Commercial HVAC focus
We work exclusively on commercial and multifamily systems across the NYC metro — boilers, chillers, rooftop units, heat pumps, and building controls — the systems LL87 scrutinizes most.
Compliance-aware scope
Our assessments and retro-commissioning are structured around what LL87 and the EER require, so the work product maps directly to your filing instead of leaving gaps.
Assessment-to-documentation under one roof
From the first walk-through to the final HVAC documentation package, you deal with one accountable contractor — fewer handoffs, faster filing.
Efficiency that pays back
We prioritize measures that reduce energy use and operating cost, so compliance spending also lowers your bills and your future emissions exposure.
Transparent Pricing
No fees. No surprises. Just honest service.
Compliance Assessment
ASHRAE Level II-aligned HVAC audit and retro-commissioning investigation to establish where your building stands and what's required.
- HVAC system inventory and performance testing
- Controls, sequencing, and set point review
- Retro-commissioning deficiency findings
- Prioritized energy conservation measures with payback
- Summary of HVAC obligations for your EER
Upgrades & Retrofits
Execution of the retro-commissioning corrections and high-efficiency HVAC upgrades identified in the assessment.
- Retro-commissioning corrective work and re-testing
- Controls/BAS optimization and scheduling fixes
- Boiler, chiller, RTU, and heat pump retrofits
- VFD and economizer/DCV improvements
- Functional verification of implemented measures
Ongoing Compliance & Maintenance
Recurring maintenance and monitoring to keep retro-commissioned systems performing and to prepare for your next cycle.
- Preventive maintenance on covered HVAC systems
- Periodic controls and set point verification
- Performance monitoring and drift detection
- Documentation upkeep for future reporting
- Advance planning for the next ten-year cycle
Pricing is scoped after the Compliance Assessment, based on your building's size, systems, and condition. Com+ Mechanical provides HVAC assessment, corrective, and upgrade work and supporting documentation; the Energy Efficiency Report is filed by a qualified professional.
Own a Commercial Property?
Business+ plans start at $499/year — includes 2 rtu tune-ups, 10% off all services, and priority scheduling.
Equipment & Brands We Service
Factory-trained technicians for all major HVAC manufacturers
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Frequently Asked Questions
Get answers to common questions about our services
Does Local Law 87 apply to my building?
LL87 generally applies to buildings over 50,000 gross square feet, and to multiple buildings on the same tax lot that together exceed 100,000 square feet. If you're near the threshold or unsure, we can help confirm whether your property is a covered building during the assessment.
How often do I have to comply, and when is my deadline?
LL87 runs on a recurring ten-year cycle. Your specific compliance year is tied to the last digit of your building's tax block number, and the Energy Efficiency Report is due by the end of that calendar year. We recommend starting the assessment well ahead of the deadline to allow time for corrective work.
What exactly is the difference between the energy audit and retro-commissioning?
The energy audit (ASHRAE Level II or equivalent) is a study that identifies how your building uses energy and what measures could reduce it across HVAC, hot water, envelope, lighting, and electrical. Retro-commissioning is hands-on: it verifies and corrects how existing systems actually operate — control sequences, calibration, scheduling, and HVAC set points and setbacks. Both are summarized in the EER.
Why is HVAC such a big part of LL87?
Heating and cooling are usually the largest energy end-uses in a commercial building, so HVAC equipment, controls, and operating strategies are typically where the audit finds the most savings and where retro-commissioning corrections have the biggest impact. That's why an HVAC-focused contractor is well positioned to drive your compliance.
What happens if I file late or my report is incomplete?
A missed or incomplete Energy Efficiency Report can result in a Department of Buildings violation and monetary penalties that recur and escalate for each additional year out of compliance. An incomplete report is generally treated like a non-filing until it's corrected, which is why thorough HVAC documentation matters.
Can Com+ Mechanical file the Energy Efficiency Report for me?
Com+ performs the HVAC assessment, retro-commissioning corrections, and efficiency upgrades, and prepares the supporting HVAC documentation. The EER itself must be submitted by a qualified professional (such as a registered design professional or an approved energy auditor / retro-commissioning agent). We coordinate directly with your filing professional, or can help you engage one.
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Don't Wait for the Deadline — Start Your LL87 Assessment
Local Law 87 deadlines arrive on a fixed schedule, and the HVAC corrective work behind a clean Energy Efficiency Report takes time to scope, budget, and complete. Get ahead of your compliance year with an assessment from Com+ Mechanical — and turn a regulatory obligation into lower energy costs. Call (332) 600-4640 to schedule.
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