
Packaged rooftop unit (RTU) inspection, curb adapter fitting, and complete unit retrofits.
Turnkey replacement of aging packaged rooftop units with high-efficiency modern commercial RTUs.
Custom sheet metal roof curb adapters ensuring leak-proof transitions between new RTUs and existing openings.
Cleaning gas burners, testing spark ignitors, and inspecting tubular heat exchangers on rooftop units.
Replacing commercial condenser fan motors and heavy-duty fan blades on rooftop equipment.
Inspecting power vent exhaust blowers and flue caps to ensure safe combustion discharge.
Digital flue gas analysis and cell inspection to prevent carbon monoxide entry into commercial supply air.
Locating and repairing refrigerant leaks on rooftop coils, filter driers, and expansion valves.
Installing isolation spring mounts and flexible duct connectors to eliminate rooftop equipment vibration noise.
Packaged rooftop units (RTUs) are the workhorse of commercial HVAC, combining heating, cooling, compressor, and blower components into a single weatherproof cabinet mounted on building roof curbs. Because RTUs are exposed to harsh Texas sun, hail, heavy rain, and continuous operation, rooftop components require specialized technician expertise. Airnet HVAC offers comprehensive rooftop unit services—including RTU repair, curb adapter retrofitting, gas burner maintenance, condenser fan replacement, and complete unit replacements. Our technicians service all major commercial RTU brands, including Carrier, Trane, Lennox, Rheem, and York. We perform thorough rooftop diagnostics, resolve gas ignition issues, repair economizer dampers, and seal duct connections. Through fast response times, crane lift coordination, and quality workmanship, we keep your rooftop equipment running efficiently and reliably.
RTU compressor or blower motor failure leaving commercial spaces without heating or cooling.
Rusted RTU drain pans or compromised roof curb flashing causing water leaks into building ceilings.
Gas valve or spark ignitor failure preventing rooftop unit heating during cold weather.
Worn isolation mounts causing loud equipment vibration noise to transmit into office spaces below.
Rooftop coils clogged with dirt and debris, causing high compressor head pressure.
Thorough testing of 3-phase compressors, fan motors, gas valves, and economizer controls.
Fitting leak-proof metal curb adapters when swapping out old RTUs for new commercial models.
Cleaning gas burners, inspecting tubular heat exchangers, and testing flue exhaust draft.
Replacing failed outdoor fan motors and heavy-duty fan blades on rooftop cabinets.
Installing spring isolation mounts and flexible duct connectors to stop building vibration noise.
Coordinating crane lifting, curb fitting, and electrical hookups for fast turnkey RTU replacement.
Helpful guidance on commercial RTU repairs, economizer operation, curb adapter retrofits, and airflow balancing.

Partner with licensed Texas specialists for precision diagnostics, transparent upfront quotes, and long-lasting climate control reliability.