Rooftop Package Units (RTUs)
A Rooftop Package Unit is an integrated HVAC system designed to cool commercial and industrial spaces. It is a standalone unit typically installed on building rooftops but can also be placed in other parts of a building.
RTUs designed for tropical climates cover areas such as Khuzestan Province—including Ahvaz, Dezful, Abadan, Khorramshahr, Shushtar, Shoosh, Omidiyeh, Mahshahr, Behbahan, Andimeshk, Izeh, Masjed Soleyman—Bushehr Province, and Hormozgan Province. Due to their integrated and simple design, ease of installation, and low maintenance costs, these units are widely used in commercial and industrial applications.
Components of Rooftop Package Units
Air Handling Section: Similar to a standard AHU, this part is responsible for air intake, filtration, and temperature adjustment through contact with the cooling coil.
Condensing Unit: Provides cooling based on the vapor-compression refrigeration cycle. The refrigerant absorbs heat from the air at the expansion coil, evaporates, is compressed, and then passes through the condenser.
Electrical Panel: An integrated panel controls and protects the operation of both the air handling and condensing units.
Performance Factors
The unit’s performance depends on compressor type, condenser capacity, cooling coil design, and ambient temperature.
Compressors: Types include scroll (highest efficiency), screw, and piston compressors. The compressor type greatly influences the condensing unit’s efficiency.
Condenser: Its capacity and heat exchange surface must be adequate for refrigerant condensation; insufficient capacity leads to high discharge pressure and reduced efficiency.
Cooling Coil: Direct expansion type; improper coil design or size can cause suction pressure drops, risking compressor damage and performance loss.
Applications in Khuzestan and Ahvaz
RTUs are ducted HVAC systems distributing conditioned air via ducts throughout a building. Such systems are ideal where ducted HVAC is preferred, including:
Hospitals and healthcare centers
Commercial centers
Educational institutions
Wedding halls
Sports complexes
Industrial buildings
Auditoriums
Cinemas and theaters
Advantages and Disadvantages
Advantages:
Easy installation due to integrated design
Saves indoor space as installation is rooftop-based
Easy access to all parts for maintenance
Reduces indoor noise as equipment is located outside
Disadvantages:
Higher initial cost compared to traditional HVAC
Roof must support unit weight
Conclusion
RTUs offer many benefits like easy installation, high efficiency, and space savings, making them ideal for commercial and industrial HVAC. However, their higher upfront cost and maintenance needs are drawbacks (which Avash Sepidar Sepehr addresses with superior services, easing concerns of owners and contractors). Choosing RTUs should consider project-specific needs and conditions.
About Avash Sepidar Sepehr
Avash Sepidar Sepehr, recognized for supplying leading global brands such as Midea, LG, Lenzor, and Trust, is a pioneer in HVAC solutions. The company focuses on RTUs and provides comprehensive services.
Operating extensively in Khuzestan—especially Ahvaz—and neighboring provinces, Avash Sepidar Sepehr specializes in cooling systems, including RTUs, striving to deliver quality products and exceptional services for customer satisfaction.
Services Provided by Avash Sepidar Sepehr
Consultation: Professional advice to select optimal HVAC solutions tailored to needs and environment.
Design: Expert engineering teams design HVAC systems compatible with project requirements, including selecting RTU type, capacity, duct routing, and installation points for maximum efficiency.
Sales: Provides reputable, quality RTU brands ensuring high performance and durability.
Notable projects using RTUs include:
Ahvaz Railway
Khorramshahr Railway
Khuzestan Welfare Organization
Novin Choob
Hosseiniyeh Novin Choob
Megafit Club
Hanofit Club
Imamzadeh Sabzghaba Shrine
Installation: Professional and precise installation by experienced technicians to maximize performance and system lifespan, committed to customer satisfaction.
After-Sales Service: Offers 24/7 support across Khuzestan to .ensure reliability and customer peace of mind
