Commercial HVAC & Rooftop Unit Repair (RTU Service)
Packaged rooftop unit repair, commercial AC service and scheduled maintenance for restaurants, retail, offices, medical suites and property managers. 2R Cooling dispatches from Port St. Lucie across the Treasure Coast and the northern Palm Beaches.
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What we service on a commercial rooftop unit
A packaged rooftop unit combines a refrigerant circuit, an air-handling section, an electrical and control system and a weather-exposed cabinet. Florida sun, salt air and kitchen exhaust attack all four. We test the whole unit before quoting, and document what we found so you can plan the next repair instead of reacting to it.
Packaged rooftop units (RTUs)
Most commercial buildings on the Treasure Coast cool with packaged rooftop units — everything in one cabinet on a curb, sitting in full sun, salt air and rain year-round. We service RTUs across the common commercial brands, from small 3-to-5-ton units on retail suites to larger multi-compressor equipment on offices, restaurants and light industrial buildings.
Compressors and refrigerant circuits
Before a compressor is condemned we check start components, contactors, capacitors, winding resistance and the safeties that shut it down. When a compressor has genuinely failed we find the cause — lost condenser airflow, a restriction, low charge, short cycling — because a replacement installed into the same conditions fails again.
Condenser and evaporator coils
Coil fouling is the single biggest cause of high head pressure, lost capacity and premature compressor failure in Florida. Salt air corrodes fins, kitchen exhaust coats condensers in grease, and landscaping debris blocks airflow. We clean coils properly, straighten fins and identify corrosion before it becomes a leak.
Blower motors, belts and drives
Weak airflow, tripping high-limit safeties, noise and belt dust all point at the air-side. We check blower motor amp draw and bearings, belt tension and alignment, sheave wear, ECM module faults and static pressure across dirty filters and blocked returns.
Electrical failures
Pitted contactors, failed capacitors, burnt lugs, weak disconnects, tripped breakers and corroded terminals cause a large share of no-cool calls on rooftops. We test under load, tighten and correct the connections, and replace the components that were about to fail next.
Controls, thermostats and safeties
Faulty thermostats, failed control boards, bad sensors, defeated safeties and incorrectly programmed schedules produce complaints that no amount of refrigerant will fix. We verify the control sequence and correct the setup, including units tied into simple building management systems.
Economizers and outside air
Where units are fitted with economizers, the dampers, actuators, linkages and sensors are frequently stuck, disconnected or wired out. A failed economizer either wastes energy or pulls hot humid Florida air into the building. We test the actuator and sensor and restore or correctly disable the function.
Refrigerant leaks and charge
We leak-check rather than recharging on a schedule: electronic detection, nitrogen pressure testing, a proper repair, evacuation and a weighed-in charge. Charge is verified by superheat and subcooling, not by gauge pressure alone.
Condensate, drains and pans
Blocked drains and rusted pans on a roof cause ceiling damage before anyone notices the HVAC problem. Drain clearing, pan condition, trap design and overflow switches are part of every maintenance visit.
Preventive maintenance for commercial HVAC
Semi-annual or quarterly service covering coil cleaning, filters, belts, motor amp draw, electrical tightening, control verification, charge check, drain clearing and cabinet condition — with a written report per unit, so property managers have documented condition and history for budgeting.
Replacement evaluation
When repairs stop making sense we give you the comparison in writing: unit age and refrigerant, compressor and coil condition, cabinet and curb state, cost of the pending repair, and what a replacement including curb adapter and rigging would run. No pressure and no invented urgency.
Commercial buildings we serve
Rooftop and packaged equipment is standard across the commercial buildings we cover, from single retail suites to multi-site portfolios.
Restaurants and food service
Rooftops working against kitchen heat and grease-loaded exhaust, where dining-room comfort is part of the business.
Retail and shopping centers
Multi-tenant strip centers with several small packaged units and shared roof access.
Offices and professional suites
Comfort complaints, zoning issues and thermostat/control faults across multiple tenants.
Medical and dental
Facilities that need stable temperature and humidity, and scheduled service outside patient hours.
Warehouse and light industrial
Larger packaged equipment, make-up air and ventilation in high-heat spaces.
Property management
Multi-unit and multi-site portfolios with per-unit reporting for budgeting and capital planning.
Documented RTU Controls Work
Commercial RTU Controls Repair — Melbourne, FL
Commercial HVAC controls diagnosis in Melbourne, Florida. 2R Cooling found four rooftop-unit thermostats configured for the wrong remote-sensor type and corrected the configuration so each system controls from its actual zone temperature.
Read the full case study →Recent commercial HVAC work
Documented jobs from our own service records.
Browse all completed refrigeration and HVAC projects.
Related services
Commercial HVAC
Full commercial HVAC service, maintenance and installation.
AC Repair
No-cool calls, weak airflow and system diagnostics.
AC Installation
Replacement and new equipment, sized and quoted properly.
Commercial Refrigeration
Walk-ins, reach-ins and ice machines on the same site visit.
Commercial HVAC Service Agreements
Scheduled rooftop unit maintenance on a written agreement, HVAC and refrigeration together.
Rooftop unit service by area
Rooftop unit service in Port St. Lucie and across the Treasure Coast and northern Palm Beaches, dispatched from our Port St. Lucie shop.
Commercial HVAC and RTU questions
What is included in rooftop unit service?+
Diagnosis and repair of the refrigerant circuit, compressors, condenser and evaporator coils, blower and condenser motors, belts and drives, electrical components, safeties, thermostats and controls, economizers where fitted, plus condensate and filter service.
How often should a commercial rooftop unit be serviced?+
Twice a year is the practical minimum in Florida, and quarterly is better for kitchens, coastal sites and units with heavy grease or salt exposure. Coil cleaning and electrical tightening prevent most of the compressor failures we are called out for.
Should I repair or replace an aging RTU?+
We look at unit age, refrigerant type, compressor and coil condition, cabinet and curb integrity, and the repair cost against a replacement plus curb adapter and crane. If the unit has years of reliable service left we say so — we do not open every visit with a replacement quote.
Do you handle R-22 units?+
We still service legacy R-22 equipment, but R-22 is no longer produced and the cost of a large recharge often exceeds what the repair is worth. We will lay out the numbers so the decision is yours and not a surprise.
Can you work on units on a roof without a crane?+
Routine repairs, coil cleaning, motor and control work are done in place. Compressor and full unit replacements are scheduled with rigging or a crane, and we coordinate that with your property manager or landlord.
Do you cover commercial AC in retail, office and medical buildings?+
Yes. Packaged rooftops, split systems and mini-splits in offices, retail, medical suites, warehouses and multi-tenant buildings are all standard work for us.
Do you offer maintenance agreements for multiple units?+
Yes, including multi-unit and multi-site buildings. Each unit gets its own written report so property managers can see condition and history unit by unit rather than one summary invoice.
Which areas do you cover for commercial HVAC?+
We dispatch from Port St. Lucie and serve the Treasure Coast and northern Palm Beaches, including Stuart, Palm City, Vero Beach, Jupiter, Palm Beach Gardens and West Palm Beach.
Rooftop unit down or running warm?
Call 2R Cooling or request commercial HVAC service online.