'%3e%3cpath%20d='M41.90,14.92%20L44.15,2.36%20L55.85,2.36%20L58.10,14.92%20A36%2036%200%200%201%2069.08,19.47%20L79.55,12.18%20L87.82,20.45%20L80.53,30.92%20A36%2036%200%200%201%2085.08,41.90%20L97.64,44.15%20L97.64,55.85%20L85.08,58.10%20A36%2036%200%200%201%2080.53,69.08%20L87.82,79.55%20L79.55,87.82%20L69.08,80.53%20A36%2036%200%200%201%2058.10,85.08%20L55.85,97.64%20L44.15,97.64%20L41.90,85.08%20A36%2036%200%200%201%2030.92,80.53%20L20.45,87.82%20L12.18,79.55%20L19.47,69.08%20A36%2036%200%200%201%2014.92,58.10%20L2.36,55.85%20L2.36,44.15%20L14.92,41.90%20A36%2036%200%200%201%2019.47,30.92%20L12.18,20.45%20L20.45,12.18%20L30.92,19.47%20A36%2036%200%200%201%2041.90,14.92%20Z'%20fill='url(%23cpGear)'%3e%3c/path%3e%3ccircle%20cx='50'%20cy='50'%20r='28'%20fill='none'%20stroke='%23012f00'%20stroke-width='3'%3e%3c/circle%3e%3cpath%20d='M43.50,37.50%20L45.50,35.50%20L54.50,35.50%20L56.50,37.50%20L56.50,43.50%20L62.50,43.50%20L64.50,45.50%20L64.50,54.50%20L62.50,56.50%20L56.50,56.50%20L56.50,62.50%20L54.50,64.50%20L45.50,64.50%20L43.50,62.50%20L43.50,56.50%20L37.50,56.50%20L35.50,54.50%20L35.50,45.50%20L37.50,43.50%20L43.50,43.50%20Z'%20fill='url(%23cpGold)'%20stroke='%23bf5d00'%20stroke-width='0.4'%20stroke-linejoin='miter'%3e%3c/path%3e%3c/g%3e%3c/svg%3e){kind=small}
Building Automation (BAS/BMS) Service, Integration & Optimization Across NYC
Your BAS is supposed to run the building — not generate nuisance alarms and stuck overrides nobody trusts. Com+ Mechanical services, integrates and tunes DDC controls, supervisory front-ends and field devices across the five boroughs and surrounding metro. We get points reading true, sequences doing what the spec says, and your HVAC plant running on intent instead of HAND-mode.
Common BAS/BMS Problems We Resolve
Points left in manual override (HAND)
Valves, dampers or fans commanded to a fixed value during a past service call and never released to AUTO. The graphic looks normal while the equipment ignores the sequence — driving simultaneous heating and cooling and wasted energy. We audit every overridden and out-of-service point and release them.
Flatlined or out-of-calibration sensors
A space, supply-air or mixed-air sensor reading a stuck or offset value sends every downstream loop the wrong information. A 3-degree SAT offset alone can defeat an economizer and a reset strategy. We field-verify sensors against calibrated instruments and correct or replace them.
Nuisance alarm floods nobody trusts
Hundreds of unconfigured or mis-limited alarms train operators to ignore the front-end entirely — so the one real failure gets missed. We rationalize alarm limits, delays and priorities and restore working notification routing.
Dropped network segment or offline controllers
A MS/TP trunk with a wiring fault, duplicate MAC/device-instance, bad EOL termination or a failed controller shows devices as offline and points as unreliable. We troubleshoot the BACnet/Modbus trunk, find the fault, and bring the segment back.
Hunting valves, dampers and VFDs
Control loops that overshoot and oscillate wear out actuators and VFDs and never hold setpoint. Usually untuned PID gains, an oversized valve or a fighting reset. We retune the loops so they settle instead of hunt.
Graphics and trends that no longer match reality
Front-end graphics showing equipment that was removed or renamed, schedules nobody maintains, and trend logs that stopped collecting months ago. Without trends you are flying blind. We rebuild graphics, schedules and trending so the BAS tells the truth.
Controls Service Built for Commercial Building Operators
A building automation system is only as good as its weakest point, sensor and sequence. In most NYC buildings the BAS was commissioned years ago, then drifted — sensors fell out of calibration, technicians left points in override, graphics stopped matching the field, and trend logs quietly stopped collecting. The result is a front-end that looks fine on the screen while the plant overheats, overcools and overspends. Com+ Mechanical services BAS/BMS platforms end to end: DDC field controllers, VAV and fan-coil controllers, supervisory devices like Tridium Niagara JACEs and plant-level controllers, and the BACnet/IP, BACnet MS/TP, Modbus and LonWorks networks that tie them together. We do point-to-point checkout, restore and document sequences of operation, integrate third-party equipment behind a single front-end, and tune control loops and reset strategies so the building runs on engineering intent — quieter alarms, tighter comfort, lower energy.
What Our BAS/BMS Service Covers
Why Facilities Teams Call Com+ for Controls
Our Simple Process
From call to comfort in 4 easy steps
System audit & point survey
We log into the front-end, inventory controllers and network architecture, and pull every overridden, out-of-service and unreliable point — then walk the field to compare the BAS against reality.
Verify points & sequences
Point-to-point checkout of sensors and outputs, calibration where needed, and a sequence-of-operations review that flags where the building has drifted from design intent.
Correct, integrate & tune
We release overrides, fix faults and integration gaps, retune control loops, and apply reset and scheduling strategies — with a documented scope approved before work proceeds.
Document, trend & verify
We restore trends and alarms, rebuild graphics and schedules, verify performance over real run cycles, and hand back as-operated sequence documentation for your records.
Types of Systems We Install
DDC Field & Equipment Controllers
The programmable and application-specific controllers running individual equipment — VAV boxes, fan-coil units, air handlers, pumps and plant equipment.
- •VAV & fan-coil controller troubleshooting
- •AHU sequence verification
- •Actuator & sensor point checkout
Supervisory & Front-End Systems
The network and server layer — Tridium Niagara JACEs, plant controllers and web front-ends — that hosts graphics, schedules, trends and alarms.
- •JACE / supervisory device service
- •Graphics, schedule & trend rebuilds
- •Alarm rationalization & routing
Integration Gateways & Networks
The communication backbone — BACnet, Modbus, LonWorks and N2 trunks and protocol gateways that connect mixed-vendor equipment.
- •MS/TP & IP trunk troubleshooting
- •Protocol gateway configuration
- •Multi-vendor device integration
The Com+ Mechanical Difference
Controls and mechanical under one roof
We do not stop at the front-end. Because we service the chillers, boilers, RTUs and air handlers the BAS commands, we tune the controls to the actual equipment behavior — not in isolation.
Built for facilities directors
Clear documentation, a single point of contact, and sequences written in plain language so your building engineers can operate the system after we leave.
Platform-agnostic integration
BACnet, Modbus, LonWorks and N2 — we integrate mixed-manufacturer and mixed-vintage equipment so you are not locked into ripping out a working system.
Optimization tied to Local Law 97
Every engagement surfaces energy waste — simultaneous heating/cooling, failed economizers, runaway schedules — and ties controls fixes to measurable emissions and cost reduction.
Transparent Pricing
No fees. No surprises. Just honest service.
BAS Assessment
A front-end and field audit that tells you what your system is actually doing versus what it should be.
- Controller & network architecture inventory
- Override, out-of-service & unreliable point report
- Sequence-of-operations and alarm review
- Prioritized findings with optimization opportunities
Service, Integration & Optimization
Scoped controls work — point repair, integration, loop tuning and energy-optimization strategies.
- Point-to-point checkout & sensor calibration
- Sequence correction and loop tuning
- Third-party / multi-vendor integration
- As-operated documentation
Controls Maintenance Agreement
Recurring BAS health checks that keep sequences, trends and alarms honest across your portfolio.
- Scheduled point & override audits
- Trend review for drift and energy waste
- Priority remote and on-site response
- Portfolio-wide controls reporting
Pricing shown is a structure, not a quote. Final pricing is confirmed in writing after assessment and scales with platform, point count and system condition.
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
%20--%3e%3csvg%20version='1.1'%20id='Layer_1'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%20150%2050'%20style='enable-background:new%200%200%20150%2050;'%20xml:space='preserve'%3e%3cg%3e%3cpath%20style='fill:%23C9202F;'%20d='M124.447,44.322c-23.807,5.229-55.19-0.102-55.19-0.102s73.175,3.979,71.344-20.254%20C138.687-1.368,35.312,8.163,35.312,8.163c60.192-10.521,91.646-0.564,93.939-0.144c11.942,3.18,19.694,9.036,20.404,15.459%20C151.563,35.271,135.269,41.943,124.447,44.322z'/%3e%3cpath%20style='fill:%23C9202F;'%20d='M83.171,38.6c-2.416,0-4.058-0.553-4.927-1.656s-1.022-2.773-0.301-5.027l4.168-12.728%20c0.861-2.684,1.97-4.478,3.324-5.382c1.353-0.904,3.469-1.357,6.35-1.357h2.956c2.877,0,4.145,0.301,5.231,1.535%20c0.934,1.06,0.972,2.521,0.108,5.205l-4.149,12.718c-0.723,2.254-1.507,4.117-3.085,5.223S88.903,38.6,86.488,38.6L83.171,38.6z%20M96.602,18.799c0.302-1.029,0.558-1.979,0.113-2.657c-0.327-0.502-0.804-0.66-1.711-0.731c-0.829-0.117-2.286-0.062-2.286-0.062%20c-1.258,0.037-2.021,0.267-2.65,0.772c-0.629,0.506-0.955,1.038-1.479,2.669L84.19,32.285c-0.406,1.26-0.455,2.143-0.151,2.65%20c0.302,0.506,1.244,0.822,2.747,0.822c1.418-0.004,2.752-0.059,3.935-0.955c0.682-0.43,1.019-1.258,1.459-2.508L96.602,18.799z'/%3e%3cpath%20style='fill:%23C9202F;'%20d='M14.834,38.18c0,0-14.646,0.014-14.643,0.002l8.314-25.357h6.201c0,0-7.508,22.517-7.448,22.517%20h8.521L14.834,38.18z'/%3e%3cpath%20style='fill:%23C9202F;'%20d='M39.008,15.701c-0.006,0,0.945-2.86,0.945-2.86H25.417c-0.002,0-0.005,0-0.005,0l-8.31,25.339H31.61%20l0.951-2.838c0,0-7.745,0-8.385,0c-0.027,0,1.516-4.672,3.201-9.758c3.337,0,7.298,0,7.294,0c-0.008,0,0.938-2.859,0.938-2.859%20s-3.821,0-7.282-0.001c0.876-2.64,1.72-5.18,2.333-7.023C34.597,15.701,39.013,15.701,39.008,15.701z'/%3e%3cpath%20style='fill:%23C9202F;'%20d='M77.25,12.821l-5.508,16.97l-2.311-16.967l-6.073,0.003l-8.253,25.356h6.074l5.537-16.979%20c0,0,2.265,16.725,2.305,16.971l-0.002,0.006l3.525,0.002l8.242-25.363L77.25,12.821L77.25,12.821z'/%3e%3cpath%20style='fill:%23C9202F;'%20d='M121.157,12.821h-4.427l-5.274,6.652l-1.309-6.652l-6.496,0.007l2.393,11.52l-10.54,13.836h4.357%20l7.112-9.356l1.94,9.352l6.226,0.002l-2.777-14.11L121.157,12.821z'/%3e%3cpath%20style='fill:%23C9202F;'%20d='M56.332,12.822l-5.511,16.971l-2.308-16.965l-6.075,0.003l-8.252,25.357h6.074l5.535-16.981%20c0,0,2.268,16.739,2.305,16.97l-0.002,0.012h3.527l8.241-25.365h-3.534L56.332,12.822z'/%3e%3cpath%20style='fill:%23C9202F;'%20d='M138.687,44.271c0,1.305-1.07,2.375-2.376,2.375c-1.305,0-2.373-1.07-2.373-2.375%20s1.068-2.373,2.373-2.373S138.687,42.967,138.687,44.271z%20M134.331,44.271c0,1.076,0.903,1.975,1.979,1.982%20c1.075-0.008,1.981-0.906,1.981-1.982c0-1.074-0.906-1.98-1.981-1.98C135.234,42.291,134.331,43.197,134.331,44.271z%20M135.688,42.98h1.022c0.559,0,0.768,0.295,0.768,0.57c0,0.533-0.334,0.695-0.616,0.834l0.42,1.08l-0.681,0.092l-0.317-1.041%20h-0.288l-0.211,1.004h-0.621L135.688,42.98z%20M136.095,44.135h0.223c0.321,0,0.524-0.189,0.524-0.48%20c0-0.156-0.124-0.295-0.327-0.295h-0.262L136.095,44.135z'/%3e%3c/g%3e%3c/svg%3e)
Don't see your brand? We service all major manufacturers! Call us to confirm.
Proudly Serving Nassau County
Fast, reliable service in your neighborhood
Frequently Asked Questions
Get answers to common questions about our services
Do you provide 24/7 response for BAS-related failures?
Yes. When a controls or network failure takes down heating, cooling or critical ventilation, we provide 24/7 emergency commercial response across the five boroughs and surrounding metro — including remote diagnosis where the front-end is accessible.
Can you work on our existing BAS, or do you only install new ones?
We service what you already have. Most of our controls work is on existing systems — Tridium Niagara, Metasys, EcoStruxure, Siemens, Automated Logic, Honeywell and Distech — restoring points, correcting sequences and integrating new equipment without forcing a full rip-and-replace.
We have equipment from different manufacturers on different protocols. Can it all live behind one front-end?
Yes — that is core integration work. We tie BACnet/IP, BACnet MS/TP, Modbus RTU/TCP, LonWorks and legacy N2 devices together, typically under a Niagara supervisory layer, so your team operates one front-end instead of three separate vendor tools.
Can you manage building automation across a multi-building portfolio?
Yes. We support property-management companies and owners with multi-site portfolios, giving you one controls partner, consistent sequence documentation, and coordinated remote and on-site service across buildings and boroughs.
How does BAS optimization help with Local Law 97?
Most BAS energy waste is invisible until you look — simultaneous heating and cooling, economizers that never open, schedules that run equipment overnight, and reset strategies that quietly got disabled. Tuning sequences, releasing overrides and restoring resets cuts energy and emissions, directly supporting your Local Law 97 targets, often before any equipment is replaced.
Our front-end shows everything is fine but tenants still complain. What is going on?
That gap is exactly what we find. Graphics can show a valve commanded correctly while a stuck sensor, a HAND override or an untuned loop means the field is doing something else. Our point-to-point checkout compares the BAS to the actual equipment so the screen finally reflects reality.
Love Our Service? Share Your Experience!
Manage a building we've serviced? A quick review helps other NYC property managers and building owners find us.
5 stars • 500+ reviews
Most Requested Services
Our businesses' top picks for heating, cooling & air quality
Explore Commercial HVAC Resources
Equipment services, industry expertise, NYC compliance, and the metro areas we cover.
Equipment, Repair & Maintenance
Industries We Serve
NYC Compliance & Energy Law
Service Areas
Make Your BAS Run the Building Again
Tell us the platform and the symptoms — nuisance alarms, comfort complaints, runaway energy or an integration you need done. We will assess what your controls are actually doing and give your team a documented path to a system that runs on intent. Serving facilities directors and building owners across the NYC metro.
Request a BAS Assessment