HANGZHOU, China, Nov. 11, 2026 – Holtop has provided a modular HVAC solution for Robam Century Building, the 180-meter headquarters of Robam Appliances in Linping, Hangzhou. With about 107,000 square meters of gross floor area, the smart super-high-rise is built to ultra-low-energy/near-zero-energy standards and integrates offices, exhibition spaces, conference rooms, dining, fitness and other functions.
The project posed three core HVAC challenges: meeting ultra-low-energy targets, fitting equipment into limited plant and platform space in a super-high-rise, and controlling noise and indoor air quality near occupied offices. Holtop supplied 11 full-DC inverter direct-expansion air-conditioning units, 3 heat-recovery air-conditioning units and 120 heat-recovery fresh air ventilators to cover office, conference, exhibition and leisure areas.
The system is designed to optimize energy use through on-demand cooling and heating output and heat recovery between exhaust air and incoming fresh air. According to certified test reports from an authoritative third-party institution, the full-DC inverter DX units achieved a cooling EER of 4.16, heating COP of 4.90 and APF of 4.96, while the heat-recovery units achieved energy recovery efficiency of more than 75%.
Holtop also applied modular, customized unit designs to address limited installation and maintenance space, multi-stage filtration and thermal-humidity treatment for fresh air, and flexible vibration isolation and noise-reduction measures for equipment rooms adjacent to office areas.
The project marks a benchmark for Holtop in super-high-rise and ultra-low-energy buildings, validating its ability to deliver coordinated energy-saving equipment, modular customization and quiet operation in complex headquarters settings.
About Holtop
Holtop is an air-handling solution provider focused on energy-efficient ventilation, air conditioning and heat recovery technologies for commercial and residential buildings.
Media Contact:
Nancy Yin
nancy@holtop.com.cn
+86 19831815808
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