RTU diagnostics
Airplex can diagnose rooftop unit symptoms, operating issues, airflow concerns, controls issues, drainage problems, refrigerant-side concerns, and recurring comfort complaints.
NYC COMMERCIAL ROOFTOP HVAC SERVICE
Rooftop Unit Service in NYC
Airplex Mechanical provides commercial rooftop unit service across NYC and Northern New Jersey, including RTU repair, diagnostics, maintenance, installation, replacement, emergency support, access coordination, COIs, and property-manager service. We help commercial buildings, offices, restaurants, retail spaces, multifamily properties, and managed buildings choose the right rooftop HVAC next step.
RTU service
RTU repair
RTU diagnostics
RTU maintenance
RTU installation
RTU replacement
Emergency RTU support
COIs available
DOB filing support
NYC DOB licensed
Fully insured
NYC + Northern NJ
Commercial rooftop HVAC support for real building issues
RTU not cooling
RTU not heating
Rooftop unit shutdown
RTU short cycling
Weak airflow
Drainage or leak concern
Controls issue
Refrigerant concern
Maintenance due
Replacement planning
Emergency comfort issue
COI required
Roof access needed
Rooftop coordination
Rooftop HVAC work starts with access and equipment context
Rooftop service and installation requests need roof access, equipment location, affected zones, building requirements, and safety or scheduling details.
- Roof access path, building contact, and equipment location
- Affected zones, tenant or business impact, and current symptoms
- COI requirements, access hours, and roof rules
- Photos of the unit, nameplate, controller, panel, or site condition if safe
If occupied spaces, operations, tenants, customers, or critical equipment are affected, call first so the request can be routed with the right urgency.
Rooftop unit service scope
Commercial rooftop unit service Airplex handles
Rooftop units affect commercial zones, occupied spaces, tenants, customers, staff, restaurants, retail spaces, offices, multifamily buildings, and business operations. RTU service should account for the equipment, symptoms, roof access, building requirements, repair history, maintenance needs, and whether the situation needs emergency HVAC service.
RTU repair
Airplex can repair commercial rooftop unit problems when the issue can be safely and practically resolved through repair.
RTU maintenance
Airplex can support rooftop unit maintenance for seasonal readiness, filters, coils, drainage, airflow, controls, and recurring issue prevention.
RTU installation
Airplex installs commercial rooftop units, with scope depending on equipment, access, electrical requirements, building rules, and project requirements.
RTU replacement
Airplex replaces aging, failing, underperforming, or repeatedly repaired commercial rooftop units.
Emergency RTU support
If a rooftop unit failure affects tenants, customers, staff, operations, or critical spaces, the request may need emergency HVAC service.
Common RTU issues
Common rooftop unit problems Airplex can help diagnose
Rooftop HVAC problems can show up as comfort complaints, equipment behavior changes, water issues, controls problems, or system shutdowns.
RTU not cooling
A rooftop unit that runs but does not cool may have airflow, refrigerant-side, compressor, fan, coil, controls, or operating-condition issues.
RTU not heating
No heat from a rooftop unit may involve heating components, controls, airflow, electrical issues, or equipment condition.
Unit not turning on
A rooftop unit that will not start may have electrical, controls, safety, thermostat, contactor, capacitor, motor, or system-protection issues.
Short cycling
RTUs that start and stop too often may have airflow, controls, refrigerant, thermostat, electrical, or equipment-sizing issues.
Weak airflow
Weak airflow can affect large zones and may involve filters, fans, belts, coils, ductwork, dampers, controls, or equipment condition.
Water or drainage issue
Condensate and drainage problems can create leak concerns, water near equipment, and potential property damage risk.
Controls or thermostat issue
Controls, thermostat, sensor, wiring, communication, or system-response problems can prevent a rooftop unit from operating correctly.
Refrigerant concern
Weak cooling, icing, hissing, repeated low-charge symptoms, or poor performance may require refrigerant-side diagnosis.
Gas smell, burning smell, or carbon monoxide alarm
If you smell gas, suspect combustion danger, or a carbon monoxide alarm sounds, leave the area and call emergency services first. Airplex can help with rooftop HVAC service after the immediate safety issue is addressed.
RTU service process
How Airplex handles rooftop unit service
A good RTU service call starts with clear symptoms, roof access, property context, and a practical next step.
Confirm the building and access
Airplex reviews the property type, roof access, equipment location, COI needs, building rules, access windows, and whether tenants, customers, staff, or operations are affected.
Review the symptoms
Share no cooling, no heat, short cycling, weak airflow, leak concerns, controls issues, shutdowns, recurring problems, or replacement interest.
Diagnose the rooftop unit
A technician evaluates the likely failure points, including operating condition, airflow, drainage, controls, electrical components, refrigerant-side symptoms, heating/cooling operation, and serviceability.
Explain the service recommendation
Airplex explains whether the practical next step is repair, maintenance, installation, replacement, emergency support, or additional coordination.
Document what matters
For property managers and commercial buildings, notes, photos, equipment information, access details, and follow-up recommendations can help organize the service record.
RTU service options
Repair, maintain, install, replace, or escalate?
Not every rooftop unit problem has the same best next step. The right service option depends on equipment condition, failure type, repair history, access, parts availability, maintenance history, affected spaces, and whether the building can keep operating.
Repair
If the issue can be safely and practically corrected, RTU repair may be the first service option.
Maintain
If the unit is operating but showing signs of wear, recurring issues, or seasonal readiness needs, maintenance may be appropriate.
Install
If the building needs a new rooftop unit, Airplex can help scope RTU installation around equipment, access, electrical, building, and coordination requirements.
Replace
If the unit is repeatedly failing, obsolete, unsafe, inefficient, or beyond practical repair, replacement may be the right next step.
Escalate to emergency
If the RTU failure affects tenants, customers, staff, operations, critical rooms, or the ability to keep the space usable, the request may need Emergency HVAC.
Emergency RTU support
When a rooftop unit problem becomes urgent
A rooftop unit issue becomes urgent when it affects occupied spaces, tenants, customers, staff, business operations, critical equipment, or the ability to keep a commercial space usable.
No cooling in an occupied commercial space
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
No heat affecting tenants, staff, or customers
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
RTU shutdown affecting a larger zone
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
Restaurant, retail, or office comfort disruption
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
Water around equipment or property-damage risk
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
Critical equipment room or server room affected
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
Repeated failure during peak demand
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
Safety concern or alarm
Airplex can support urgent rooftop HVAC issues through emergency HVAC service.
Airplex offers 24/7 emergency HVAC service with live emergency calls and same-day emergency dispatch for emergency issues.
RTU maintenance
Rooftop unit maintenance and seasonal readiness
Rooftop unit maintenance can help support seasonal readiness, identify developing issues, organize service history, and address recurring problems before they become larger repair or emergency calls.
Filters, coils, and airflow
RTU performance can be affected by filters, coils, airflow, fans, belts, dampers, and equipment condition.
Drainage and condensate
Maintenance can help identify condensate and drainage concerns that may lead to leaks or water issues.
Controls and electrical symptoms
Controls, thermostat response, sensors, contactors, capacitors, fan motors, and electrical symptoms may need review.
Service history
For property managers, notes, photos, equipment details, and recommendations can help support future repair, maintenance, or replacement decisions.
RTU installation & replacement
Rooftop unit installation and replacement
Airplex installs and replaces commercial rooftop units. RTU installation and replacement should be scoped around building access, roof conditions, equipment location, electrical requirements, affected zones, operating conditions, DOB/building requirements, and long-term serviceability.
New RTU installation
Airplex can help scope new rooftop unit installation for commercial and property-managed buildings.
RTU replacement
Replacement may make sense when a rooftop unit is repeatedly failing, obsolete, not keeping up, unsafe, inefficient, or beyond practical repair.
Access and equipment coordination
RTU work may require roof access, equipment delivery coordination, building access windows, COIs, and electrical or building coordination.
DOB and building requirements
Airplex can handle DOB permit filing or permit filing coordination when needed for the HVAC scope. Some projects may require drawings, stamped plans, or coordination with the appropriate licensed professional.
RTU work may involve roof access, equipment delivery coordination, building access windows, COIs, electrical review, DOB/building requirements, and coordination with the appropriate licensed professional depending on scope.
Request RTU Installation / Replacement ReviewProperty manager support
Roof access, COIs, and RTU coordination
Rooftop HVAC service often depends on access and coordination as much as the equipment. Property managers and building contacts should share roof access details, COI requirements, management contacts, tenant impact, equipment location, and operating-hour limits.
COIs available
Airplex can provide COIs needed for commercial building access and service coordination.
Roof access
Share roof hatch, ladder, elevator, mechanical access, front desk, superintendent, management, or security details when requesting service.
Operating-hour and tenant impact
Let Airplex know whether the issue affects tenants, customers, staff, operations, or a space that cannot wait.
DOB filing and contractor coordination
Airplex is a NYC DOB licensed contractor and can handle DOB permit filing coordination when needed for the RTU scope.
RTU diagnostics
RTU diagnostics
RTU problems are not always obvious from the first symptom. Airplex can help diagnose whether the issue is refrigerant-side, drainage-related, controls-related, electrical, airflow, maintenance-related, or replacement-related.
Refrigerant-side concerns
Airplex specializes in refrigerant leak diagnostics, pressure testing, leak confirmation, and repair direction.
Drainage and water concerns
Condensate and drainage problems can create water issues near equipment or inside the building.
Controls and thermostat issues
RTU controls, thermostat response, sensors, wiring, or communication issues can affect operation.
Airflow and comfort complaints
Weak airflow, uneven comfort, and zones not keeping up may point to filters, fans, coils, ductwork, dampers, or system condition.
Electrical symptoms
Contactors, capacitors, fan motors, startup behavior, shutdowns, and electrical symptoms may need professional review.
Next step
Service, repair, replace, or emergency?
The right RTU service depends on the symptom, equipment condition, repair history, maintenance needs, access, safety, and how much the rooftop unit affects the property.
Service
Use when you need the rooftop unit evaluated, diagnosed, or reviewed.
Repair
Use when the unit has symptoms such as no cooling, no heat, short cycling, leaks, weak airflow, or controls problems.
Maintenance
Use when the unit is operating but needs seasonal readiness, recurring issue prevention, or service history.
Replacement
Use when the unit is repeatedly failing, obsolete, unsafe, inefficient, or beyond practical repair.
Emergency
Use when the failure affects tenants, customers, staff, operations, critical equipment, or the ability to keep the space usable.
Service areas
Rooftop unit service across NYC and Northern New Jersey
Airplex Mechanical provides commercial rooftop unit service across New York City and Northern New Jersey, including RTU repair, maintenance, installation, replacement, emergency support, property-manager coordination, and rooftop HVAC diagnostics.
FAQ
Rooftop unit service questions, answered clearly
Rooftop unit basics
What rooftop unit services does Airplex provide?
Airplex Mechanical provides commercial rooftop unit service across NYC and Northern New Jersey, including RTU diagnostics, repair, maintenance, installation, replacement, emergency support, access coordination, and property-manager service.
Does Airplex repair rooftop units?
Yes. Airplex repairs commercial rooftop units and can help diagnose no cooling, no heat, shutdowns, short cycling, weak airflow, drainage issues, controls problems, electrical symptoms, and refrigerant-side concerns.
Does Airplex install and replace RTUs?
Yes. Airplex installs and replaces commercial rooftop units / RTUs. Installation and replacement scope depends on the equipment, building, roof access, electrical requirements, DOB/building requirements, and project needs.
Does Airplex maintain rooftop units?
Yes. Airplex supports RTU maintenance for filters, coils, airflow, drainage, controls, operating condition, seasonal readiness, and recurring issue prevention.
Emergency, diagnostics, and coordination
When is a rooftop unit issue an emergency?
A rooftop unit issue may be an emergency when it affects tenants, customers, staff, operations, critical equipment, occupied spaces, or the ability to keep the commercial space usable. Airplex offers 24/7 emergency HVAC service with live emergency calls and same-day emergency dispatch for emergency issues.
Can Airplex diagnose refrigerant issues on rooftop units?
Yes. Airplex specializes in refrigerant leak diagnostics, pressure testing, leak confirmation, and repair direction.
Can Airplex provide COIs for rooftop unit work?
Yes. Airplex can provide COIs needed for commercial building access and service coordination. Share COI requirements when requesting rooftop unit service.
What should a property manager have ready before RTU service?
Have the property address, borough, building type, number of rooftop units if known, symptoms, roof access details, COI requirements, operating-hour restrictions, tenant/customer impact, photos if safe, and urgency level ready.
Can Airplex handle DOB filing for rooftop unit work?
Airplex Mechanical is a NYC DOB licensed contractor and can handle DOB permit filing coordination when needed for the RTU scope. Some work may require drawings, stamped plans, or coordination with the appropriate licensed professional.
Repair, replacement, maintenance, and service area
Should a rooftop unit be repaired or replaced?
The right service option depends on equipment age, failure type, repair history, parts availability, operating condition, access, efficiency, safety, and property impact. Airplex can review whether repair, maintenance, installation, replacement, or emergency service is the practical next step.
How much does rooftop unit service cost?
Rooftop unit service cost depends on the issue, equipment, access, property type, urgency, required parts, maintenance history, and whether the request involves repair, maintenance, installation, or replacement. Call Airplex to discuss current rooftop unit service fees.
Do you service rooftop units for offices, restaurants, retail spaces, and multifamily buildings?
Yes. Airplex supports rooftop unit service for offices, restaurants, retail spaces, multifamily buildings, property managers, commercial spaces, and critical rooms.
Do rooftop unit projects require access or delivery coordination?
Rooftop unit work may require equipment delivery, roof access, building access windows, COIs, electrical review, or additional project coordination depending on the scope. Airplex can review the RTU service or replacement requirements before the work is scheduled.
What areas do you serve for rooftop unit service?
Airplex provides rooftop unit service across NYC and Northern New Jersey, including Brooklyn, Manhattan, Queens, The Bronx, Staten Island, and Northern New Jersey.
We are factory-authorized service technicians for:
Rooftop HVAC help
Need rooftop unit service in NYC?
Call Airplex Mechanical or request rooftop unit service for commercial RTU repair, maintenance, installation, replacement, emergency support, diagnostics, roof access coordination, COIs, and property-manager HVAC needs across NYC and Northern New Jersey.