Internal threaded copper tube
Rooftop package units are installed on rooftops of buildings and are connected directly to the building’s network of ducts. It is a self-contained system that integrates cooling, heating, ventilation, and fresh air, with indoor and outdoor components in a single unit to save space and improve energy efficiency.
Holtop rooftop packaged air conditioner is the middle size AC equipment that combines functions of HVAC (cooling, heating and air ventilation etc.) And it contains all components of compressor, evaporator, condenser and valves etc in one unit. Holtop rooftop packaged air conditioner are usually installed on the roof deck in commercial applications.
Holtop Rooftop Package Unit is an all-in-one HVAC solution that integrates cooling, heating, ventilation, and fresh air functions, making it ideal for commercial and industrial applications. Equipped with advanced inverter technology, it ensures high energy efficiency while providing intelligent control through BMS integration for remote monitoring and management, delivering reliable performance across diverse climate conditions.
● Robust Structure Design |
● Anti-corrosion Solution (Optional) |
● Wide Operation Range |
The unit adopts a strong structural design with high- strength galvanized steel panels and an optional aluminum alloy frame. This ensures excellent resistance to deformation and damage from external forces, providing reliable stability even under extreme weather conditions such as strong winds and heavy snow.
Tailored for challenging environments like coastal regions and sulphide contamination areas, our corrosion resistant solutions can be customized to effectively withstand high humidity and salt mist, ensuring long-term reliability.
The unit can operate effectively in a wide temperature range, from 5°C to 52°C in cooling mode and -10°C to 24°C
in heating mode, meeting diverse climate demands.
● High EER and COP |
● Efficient Heating & Cooling in One Unit |
● High-efficiency Heat Exchanger |
Powered by advanced inverter technology, Holtop rooftop units deliver outstanding energy performance,
achieving EER values up to 12.2 and COP up to 3.7.
Holtop inverter rooftop units provide both cooling and heating with high efficiency, thanks to the integrated heat pump system. This eliminates the need for additional electric heating equipment, reducing upfront investment while maximizing year-round energy savings.
The low-pressure-loss louvered fins, coated with hydrophilic aluminum foil, are perfectly combined with internally
threaded tubes, greatly increasing the surface area and heat transfer efficiency of heat exchanger
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Ordinary tube | Internal threaded copper tube |
The smooth internal surface results in minimal disturbance to the boundary layer,lowering heat exchange efficiency. | Increase the internal surface area to improve the disturbance to heat transfer boundary layer,enhancing the performance of the heat exchanger. |
Ordinary tube
The smooth internal surface results in minimal disturbance to the boundary layer, lowering heat exchange efficiency.
Internal threaded copper tube
Increase the internal surface area to improve the disturbance to heat transfer boundary layer, enhancing the performance of the heat exchanger.
● Space-saving & Streamlined Installations |
● Adjustable Duct Connection |
● Convenient Maintenance |
Holtop rooftop units feature a compact, all-in-one design that integrates all components into a single unit— saving valuable indoor and outdoor space. With no need for additional equipment like cooling towers or water pumps, installation is faster, simpler, and more cost-effective.
The unit offers both horizontal and bottom air supply options to suit various installation environments.
The access panel facilitate regular inspection and maintenance. The washable filters help maintain the efficient operation and air quality of the unit while saving maintenance costs.
● Individual Control |
● Centralized Control |
● BMS Gateway Control |
The Holtop individual controller features an intuitive interface equipped with touch buttons, offering an user-friendly experience for easy control.
Centralized Control is to control multiple units simultaneously, making it ideal for unified control in large-scale applications.
Holtop rooftop units can be seamlessly integrated with BMS gateways supporting protocols like Modbus and BACnet, enabling centralized monitoring and intelligent control of HVAC operations.
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