Electric Chillers & Air Handling Units by Dunham Bush
Advanced Cooling & Air Quality Solutions for Modern Built Environments
ABOUT DB ELECTRIC CHILLERS & AHUs
Orient Energy Systems (OES) offers best-in-class Electric Chillers and Air Handling Units (AHUs) from Dunham-Bush, a globally respected commercial HVAC manufacturer with a legacy of over 100 years in delivering innovative, reliable and energy-efficient air-conditioning solutions. As part of OES’s HVAC portfolio, Dunham-Bush electric chillers and AHUs are engineered to meet the demanding requirements of industrial, commercial and institutional facilities, delivering precise temperature control, superior airflow management and long-term operational value.
Electric Chillers Robust systems that produce chilled water for cooling applications using high-efficiency compressor technology.
Air Handling Units (AHUs) Centralised air distribution units that condition, filter, circulate and ventilate indoor air to maintain thermal comfort and superior indoor air quality.
DB Electric Chillers & AHUs Key Features
Wide Performance Range
DB chillers are available in capacities spanning from 10 to 1100 USRT for air-cooled and water-cooled models, while AHUs cover airflow from 800 CFM to 640,000 CFM, making them suitable for small to very large installations.
High Energy Efficiency
Chillers achieve industry-leading Coefficient of Performance (COP) with advanced compressor designs and economiser cycles that reduce part-load energy consumption. Independent compressor circuits provide redundancy and stable operation under varying loads.
Environmentally Sound Refrigerants
Many Dunham-Bush chillers use R134a and other low-ODP (Ozone Depletion Potential) refrigerants, aligning with environmental and safety standards for sustainable cooling.
Intelligent Controls & Monitoring
Units are equipped with advanced controllers that enable precise temperature regulation, condition monitoring and adaptive performance that matches system demand.
Flexible Configurations
Electric chillers and AHUs are offered in modular and custom configurations for integration with different HVAC system designs, including centralised chilled water loops, BMS (Building Management System) integration and staged operation.
Role in Sustainability & Energy Efficiency
Dunham-Bush Electric Chillers and AHUs contribute to sustainable building operation by:
Reducing energy consumption through high COP and VFD (Variable Frequency Drive) technology on compressors and fans.
Lowering peak load demand and enabling better load distribution across HVAC systems.
Utilising eco-friendly refrigerants that support compliance with modern environmental standards.
Optimising indoor air quality and comfort, which enhances occupant health and productivity while maintaining energy-efficient performance.
Through energy-smart components and intelligent control systems, Dunham-Bush products help reduce operational costs and carbon footprints in large-scale facilities.
Applications Across Industries
Commercial Complexes & Shopping Malls
Dunham-Bush electric chillers and AHUs deliver consistent cooling and high indoor air quality across large, high-footfall spaces. Their scalable capacity and efficient load management ensure comfort while optimising energy consumption throughout operating hours.
Corporate Offices & Business Parks
These systems provide precise temperature control and reliable airflow to support employee comfort and productivity. Quiet operation and intelligent controls make them ideal for modern office environments with varying occupancy levels.
Hospitals & Healthcare Facilities
Dunham-Bush solutions ensure stable thermal conditions and controlled air circulation critical for patient care. Advanced filtration compatibility and dependable performance support hygiene standards and continuous operation in healthcare settings.
Manufacturing & Data Centres
Electric chillers and AHUs maintain controlled environments for sensitive equipment and production processes. Their high reliability and redundancy options help protect operations from downtime and temperature-related risks.
Hospitality & Hotels
These systems deliver superior guest comfort through consistent cooling and quiet operation across rooms and common areas. Energy-efficient performance helps hotels manage operating costs while maintaining premium comfort standards.
