What Is a Rooftop Packaged AC? Complete Guide for Commercial HVAC Systems

Step 1: Air Intake
The Rooftop Packaged AC draws return air from the building interior through ductwork. Fresh outdoor air can be introduced through an economizer when conditions permit.

Step 2: Air Conditioning
The system conditions the air by cooling via the refrigerant cycle or heating via electric, gas, or heat pump options, while also filtering and dehumidifying as needed.

Step 3: Air Distribution
The conditioned air is pushed by the blower through supply ducts back into the building, maintaining desired temperature and air quality throughout occupied spaces.

Maximizes Indoor Space
Installed entirely on the roof, the rooftop AC unit frees up valuable indoor square footage that would otherwise be occupied by mechanical equipment.

Centralized Maintenance
All components are accessible in one location, simplifying routine inspections, repairs, and parts replacement for service technicians.

High Energy Efficiency
Modern Rooftop Packaged AC systems achieve SEER ratings up to 18, significantly reducing energy consumption and operational costs.

Lower Indoor Noise
With the compressor and condenser located on the roof, indoor noise levels are substantially reduced, creating a quieter environment for occupants.

Shopping Malls
Maintains comfortable shopping environments in stores, malls, supermarkets, and retail establishments.

Office Buildings
Provides consistent comfort for workspaces, meeting rooms, and common areas in single or multi-story office complexes.

Hotels
Delivers guest comfort in hotels, motels, resorts, conference centers, and restaurant dining areas.

Warehouses
Conditions manufacturing spaces, distribution centers, and workshop areas with reliable climate control.

Educational Facilities
Controls temperature and ventilation in classrooms, libraries, gymnasiums, and administrative buildings.

Healthcare Facilities
Suitable for medical offices, clinics, outpatient centers, and other healthcare environments.

Cooling Capacity
A professional load calculation—considering square footage, insulation, window types, occupancy, and internal heat loads—determines the correct tonnage (BTU/h) for your building. Refria offers capacities from 3 to 130 tons.

Static Pressure
Evaluate the ductwork design and system requirements to ensure the rooftop AC unit can deliver adequate airflow throughout the building.

Energy Efficiency
Look for high SEER and EER ratings. A higher SEER indicates better seasonal cooling efficiency, leading to substantial utility savings over the system's lifespan.

Climate Conditions
Units for hot climates prioritize robust cooling. Cold regions require adequate heating capacity and defrost cycles. Coastal areas demand corrosion-resistant materials.

Proven Reliability
Commercial-grade components selected for durability and long service life in rooftop environments.

Energy Savings
High-efficiency models significantly reduce energy consumption compared to older systems.

Factory Testing
Every unit undergoes comprehensive factory testing before shipment for reliable operation.

Technical Support
Experienced team provides support for system selection, installation guidance, and troubleshooting.

Customization
Custom configurations to meet specific project requirements, including special controls, filters, or accessories.

Competitive Pricing
Direct manufacturer pricing without compromising on quality or features.

Regular Inspections
Schedule bi-annual inspections (spring and fall) by a qualified HVAC technician.

Filter Changes
Replace or clean air filters monthly or quarterly, depending on usage and environment.

Coil Cleaning
Keep evaporator and condenser coils clean to maintain efficiency.

Clear Drain Lines
Ensure condensate drains are unobstructed to prevent water damage.