Professional Rooftop Unit Services in Norwalk & La Mirada
Rooftop units (RTUs) are self-contained package systems that combine heating and cooling in a single cabinet mounted on the roof. They're standard equipment in commercial buildings, retail spaces, restaurants, and many older California residences. Rooftop unit service in Norwalk requires rooftop access, proper fall protection, and familiarity with package unit design — all of which our commercial HVAC technicians bring to every service call.
We service gas/electric package units, heat pump package units, and cooling-only package units from all major commercial manufacturers including Carrier, Lennox, Trane, York, Goodman, and Daikin. Common rooftop unit repairs include condenser fan motor replacement, compressor diagnostics, gas heat section service, economizer damper repair, and refrigerant recharging.
Preventive maintenance on rooftop units is especially important because they're exposed to direct sunlight, weather, and rooftop debris. We offer service agreements for commercial properties that include quarterly inspections, filter changes, and priority response for emergency calls.
Our Rooftop Unit Service Process
Rooftop Access & Safety Setup
We use appropriate access equipment and fall protection per OSHA requirements. We inspect the unit curb, ductwork connections, electrical disconnects, and refrigerant line connections before opening the unit.
Comprehensive Unit Inspection
We inspect and clean condenser and evaporator coils, test all electrical components, check refrigerant charge, inspect the heat section (gas burners or heat pump components), and test economizer operation if equipped.
Repairs & Parts Replacement
We carry common RTU parts including capacitors, contactors, fan motors, and control boards. More specialized parts like compressors or heat exchangers are sourced quickly through our commercial supply network.
Filter Service & Documentation
We change filters, document all operating readings (temperatures, pressures, amperages), and provide a written service report for property records. Commercial service reports are essential for warranty compliance and lease documentation.
We serve Norwalk, La Mirada, and 20 surrounding Southern California cities. Learn more about all our HVAC services or call 562-219-4085 for same-day service.