Rooftop package units deliver heating, cooling, and ventilation through a fully integrated system. Warm return air from the building passes over evaporator coils for cooling or heating elements for conditioned air delivery. The treated air is then supplied back into the indoor space to maintain consistent comfort levels.
Airflow and Ventilation Mechanism:
RTUs use high-efficiency supply and return fans to move air through filtration, cooling, heating, and ventilation stages. Optional economizers allow the use of fresh outdoor air for “free cooling,” reducing energy consumption while maintaining indoor air quality.
Refrigeration and Heating Components:
All major HVAC components—compressor, condenser coil, evaporator coil, expansion device, and heating module—are housed in one compact outdoor unit. This packaged configuration simplifies installation, reduces mechanical room requirements, and ensures efficient climate control for commercial spaces.
Filtration and Indoor Air Quality:
RTUs incorporate multi-stage filters to remove dust, pollutants, and airborne contaminants. Advanced options such as MERV filters or integrated UV-C systems can further enhance IAQ in buildings requiring higher air purity standards.
Performance Standards:
Rooftop units are engineered and tested in accordance with ASHRAE standards, AHRI performance ratings, and local building codes. These standards ensure the unit provides reliable thermal performance, energy efficiency, and safe operation under varying climate conditions.
Smart Controls and Monitoring:
Modern rooftop package units include advanced control systems that regulate fan speeds, compressor staging, outdoor-air dampers, and thermostat functions. Integrated BMS connectivity allows real-time monitoring, fault detection, energy optimization, and remote system adjustments.
Certifications and Compliance:
RTUs commonly carry certifications such as AHRI, UL, CE, and ISO quality standards. These certifications verify compliance with performance requirements, electrical safety, and manufacturing quality guidelines.
Robust and Weather-Resistant Construction:
Built with galvanized steel, powder-coated casings, and corrosion-resistant components, rooftop units are designed to withstand harsh outdoor environments. Durable construction ensures long-term reliability and reduces maintenance needs in demanding climates.
Capacity and Efficiency Ratings:
Key specifications include cooling and heating capacities (tons or kW), airflow (CFM), EER/IEER efficiency ratings, and static pressure capabilities. These parameters ensure the rooftop unit delivers the required performance for commercial, industrial, or retail applications.
