'%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}
Commercial RTU Preventive Maintenance Programs Across NYC
Most rooftop unit failures are predictable — and preventable. Com+ Mechanical builds recurring preventive maintenance programs for packaged RTUs across commercial portfolios, with scheduled seasonal visits that catch dirty coils, slipping belts, failing capacitors and stuck economizers before they become a tenant complaint or an after-hours emergency. One vendor, one schedule, documented every visit, for property managers and building owners across the five boroughs and surrounding metro.
What a PM Program Catches Before It Becomes a Failure
Dirty condenser coils driving up head pressure
A summer of city grime and cottonwood on the condenser raises head pressure and discharge temperature, spiking energy use and pushing the compressor toward a high-pressure trip. Scheduled coil cleaning restores capacity before peak cooling load finds the weakness.
Glazed or slipping blower belts
Belts stretch, glaze and crack between seasons, robbing airflow and triggering comfort complaints long before they snap. A PM visit catches tension and wear on a schedule rather than after a strip-mall tenant calls in 90-degree heat.
Weak capacitors and pitted contactors
Run capacitors drift and contactor points pit and weld over thousands of cycles. Tested under load on a recurring visit, they get replaced as planned parts — not as an emergency compressor or motor failure during a heat wave.
Seized economizers wasting energy year-round
Stuck actuators and bound damper linkages leave outside-air dampers in the wrong position, killing free-cooling savings and inflating the energy line your building reports under Local Law 97. Regular exercise and calibration keeps them working.
Clogging condensate drains and rusting pans
Algae and debris block condensate drains and traps; a failing float switch or rotted pan then sends water through the roof and into the tenant space below. Routine clearing and inspection prevents the leak and the damage claim.
Cracked heat exchangers and ignition faults going unseen
On gas/electric rooftops, a corroding heat exchanger, weak flame sensor or failing ignition control sits all summer and surfaces on the first cold night. A heating-season PM inspection finds the safety issue before the unit is needed.
A Planned PM Program Built for Commercial Rooftop Fleets
Packaged rooftop units live a hard life — baking in summer sun, pulling dirty city air across their coils, and cycling through New York's freeze-thaw winters with no one looking at them until they quit. A preventive maintenance program changes that. Com+ Mechanical sets up a recurring PM schedule for your RTUs — single units or a fleet across multiple buildings — with seasonal visits timed to the cooling and heating transitions, so each unit is inspected, cleaned, tested and corrected before peak load exposes the weak component. Every visit follows an equipment-specific task list: condenser and evaporator coil cleaning, belt and bearing service, capacitor and contactor testing under load, economizer and damper exercise, refrigerant-charge and superheat/subcooling verification, gas-heat and heat-exchanger inspection, and condensate-drain clearing. We log readings unit by unit so you can see trends — a compressor pulling rising amperage, a coil losing approach, a belt that keeps glazing — and act on a plan instead of a 2 a.m. callback. The result is fewer emergencies, longer equipment life, held efficiency that supports Local Law 97 targets, and an HVAC line item you can actually budget.
What Each Scheduled RTU PM Visit Covers
Why Property Managers Put RTUs on a Com+ PM Program
Our Simple Process
From call to comfort in 4 easy steps
Rooftop survey & unit inventory
We walk every roof, inventory each RTU by make, model, tonnage, age and configuration, confirm access and safety, and baseline current condition so the program is built around your actual equipment.
Scope, cadence & proposal
We recommend a visit frequency — typically seasonal or quarterly based on equipment, occupancy and criticality — and deliver a documented PM scope and agreement priced to your fleet, with no fabricated flat rates.
Scheduled seasonal service
Technicians perform each PM visit to an equipment-specific task list, timed to the cooling and heating transitions, coordinated with building staff and tenants around operating hours and roof-access rules.
Reporting & trend review
After each visit you receive a per-unit report with readings, photos and recommendations. We flag developing issues and any repair-vs-replace decisions so you plan capital on your schedule, not during a failure.
Types of Systems We Install
Gas/Electric Packaged RTUs
The most common commercial rooftop configuration — gas-fired heat with electric cooling. PM gives extra attention to the gas section heading into heating season.
- •Heat-exchanger and ignition safety inspection
- •Gas-train and flame-sensor checks
- •Cooling coil and economizer service
Heat-Pump Packaged Units
All-electric heat-pump rooftops used in electrification and Local Law 97 strategies, where reliable defrost and reversing-valve operation are critical year-round.
- •Reversing-valve and defrost-control testing
- •Refrigerant charge and balance verification
- •Coil cleaning for both heating and cooling modes
Multi-Zone & VAV Rooftops
Larger rooftop systems serving multiple zones through VAV boxes and integrated controls, where economizer and control performance drives building-wide comfort and energy use.
- •Zone-control and VAV coordination checks
- •Economizer and sensor calibration
- •BAS point verification and trend review
The Com+ Mechanical Difference
Commercial rooftop focus
We service packaged RTUs every day across NYC — coils, economizers, belts, compressors and controls — not the occasional residential split system. Your PM program is run by a team that knows this equipment.
Built for portfolios
One vendor, one schedule and consistent documentation whether you manage one rooftop or a hundred across multiple buildings and boroughs. Standardized reporting makes budgeting and capital planning straightforward.
Documentation you can act on
Per-unit readings and trend history turn maintenance into a planning tool — you see which units are aging out and when to budget a changeout, instead of reacting to surprise failures.
Fewer emergencies by design
The entire program is structured to convert unplanned breakdowns into scheduled, lower-cost planned work — protecting tenant comfort, uptime and your operating budget.
Transparent Pricing
No fees. No surprises. Just honest service.
Rooftop Survey & PM Assessment
A field survey and unit-by-unit inventory of your RTUs with a baseline condition report and recommended maintenance cadence.
- On-site rooftop survey and access review
- Per-unit inventory: make, model, tonnage, age, configuration
- Baseline condition assessment with photos
- Recommended PM scope and visit frequency
Recurring PM Program
A scheduled preventive maintenance agreement with seasonal multi-point service across your rooftop fleet — the core program most buildings choose.
- Seasonal/quarterly multi-point PM visits per unit
- Coil, belt, economizer, electrical and refrigerant service
- Priority emergency response between scheduled visits
- Per-unit reporting with readings, photos and trend tracking
Portfolio Maintenance Agreement
A multi-building program for property managers and owners standardizing RTU maintenance across an entire portfolio.
- Standardized PM across all buildings and units
- Consolidated portfolio-wide reporting and budgeting
- Capital-planning guidance on aging units
- Single point of contact and coordinated scheduling
Pricing shown is a structure, not a quote. Final program pricing is confirmed in writing after the rooftop survey and is based on unit count, tonnage, access and visit frequency.
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
How often should commercial rooftop units be on a PM schedule?
Most commercial RTUs are best served by seasonal visits — at minimum a spring cooling-prep and a fall heating-prep — with higher-criticality or heavily-loaded units moving to quarterly. We recommend the right cadence per unit during the rooftop survey based on age, tonnage, runtime and how critical the space is to your tenants.
Can you maintain rooftop units across multiple buildings on one agreement?
Yes. We support property-management companies and owners with multi-site portfolios under a single program — one vendor, one schedule, standardized per-unit reporting, and coordinated access across buildings and boroughs. It replaces juggling separate contractors with consolidated, budgetable maintenance.
Does preventive maintenance really reduce emergency RTU failures?
It directly targets the failure modes that cause most emergency callbacks — dirty coils, worn belts, weak capacitors and contactors, low refrigerant and clogged condensate drains. Catching those on a schedule converts unplanned, after-hours breakdowns into planned, lower-cost work. We also provide priority emergency response between visits if something does come up.
How does an RTU maintenance program support Local Law 97 compliance?
A clean, correctly-charged, well-tuned rooftop unit with a working economizer uses meaningfully less energy than a neglected one running on dirty coils and a stuck damper. Holding that efficiency lowers the energy your building reports and helps manage exposure under Local Law 97 emissions thresholds. Our per-unit trend data also shows when an aging unit should be budgeted for a high-efficiency replacement.
What does each scheduled visit include, and do we get documentation?
Each visit follows an equipment-specific task list — coil cleaning, belt and bearing service, electrical testing under load, economizer calibration, refrigerant verification, gas-heat and heat-exchanger inspection, and condensate clearing — and you receive a per-unit report with readings, photos and any corrective recommendations. That history feeds your budgeting and capital planning.
Do you coordinate roof access, COIs and tenant requirements?
Yes. We coordinate with building staff on roof access, certificates of insurance, tenant notice and safety requirements, and schedule visits around operating hours to limit disruption.
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
Put Your Rooftop Units on a Schedule — Not on Borrowed Time
Stop paying for emergency rooftop failures you could have prevented. A Com+ Mechanical preventive maintenance program means recurring planned service, fewer after-hours callbacks, longer equipment life, and an HVAC budget you can predict. Tell us your buildings and your fleet — we'll survey the roofs and build a program that fits. Serving property managers and building owners across the NYC metro.
Get a Maintenance Proposal