Office Building Packaged Unit Retrofit in Central Asia: All-in-One Heat Pump RTU Replaces Split Systems

Office Building HVAC Retrofit in Central Asia: Why Switch from Split Systems to Packaged Rooftop Units

Many existing office buildings in Central Asia — including Kazakhstan, Uzbekistan, and other neighboring countries — still rely on split air conditioning systems. As these buildings age, common issues emerge: outdoor units densely occupy roof or ground space, long refrigerant lines reduce efficiency, and heating capacity often falls short in winter.

For retrofit projects, the all-in-one heat pump rooftop unit (RTU) is becoming a practical alternative.

Three Limitations of Split Systems in Central Asian Office Buildings

Space Constraints

Each indoor unit requires a corresponding outdoor unit. A medium-sized office building may need 20 to 40 outdoor units, tightly packed on the roof or facade. This not only affects building appearance but also blocks maintenance access.

Limited Operating Range

Central Asia has a continental climate with summer temperatures above 40°C and winter temperatures below -20°C. Standard split systems suffer from significant cooling capacity drop at high temperatures and poor heating performance — or even shutdown — at low temperatures.

High Maintenance Complexity

Multiple outdoor units mean multiple failure points. Technicians must troubleshoot unit by unit, spare parts management becomes complicated, and the frequency of elevated work increases.

How an All-in-One Heat Pump RTU Solves These Problems

Reduces Outdoor Footprint

One 15-ton RTU can replace approximately 10 to 15 typical split units (based on an estimated 1–1.5 tons per split system). For an office building retrofit, this reduces dozens of outdoor units to 3 to 6 RTUs, freeing over 70% of roof space for other equipment or green areas.

Heat Pump Heating Down to -9°C

At outdoor temperatures as low as -9°C, the Creator heat pump RTU continues to provide stable heating without relying on auxiliary electric heaters. For Central Asia's wide seasonal temperature variation, this wide operating range reduces additional equipment investment and energy consumption.

All-in-One Design Simplifies the System

An RTU integrates the compressor, condenser, evaporator, and blower into a single enclosure. On-site work is limited to connecting power, ducts, and the controller. There is no need to braze refrigerant lines or charge refrigerant on site. This reduces installation quality dependency on field technicians and lowers the future risk of refrigerant leaks.

Selection Guide: When to Replace Split Systems with RTUs

Technical Considerations

External Static Pressure

Office buildings often have long duct runs. The Creator series offers external static pressure from 0–250 Pa on 6.2–7.5 ton models, and up to 0–275 Pa on larger models. Duct resistance must be calculated during selection.

Power Supply

The series operates on 380-415V / 3N / 50Hz, which matches most industrial and commercial power standards in Central Asia. However, existing electrical capacity should be verified before retrofit.

Maintenance Access

Although RTUs reduce the number of outdoor units, service clearance must still be reserved around each unit. The Creator series provides removable access doors for filters, fans, and electrical compartments — all serviceable from the front.

Conclusion

For office building HVAC retrofits in Central Asia, switching from split systems to all-in-one heat pump RTUs is not the only solution. However, it offers clear technical advantages in reducing outdoor unit footprint, improving winter heating reliability, and simplifying installation and maintenance. When selecting an RTU, key factors to verify include the building's cooling load, required duct static pressure, and whether the winter minimum temperature falls within the -9°C operating limit.