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Dunham-Bush Absorption Chillers, USA

Energy Efficient, Reliable, and Environmental Friendly

Range 422 – 11,631 KW

130 Years of Innovation in Cooling
Trusted since 1894—Dunham-Bush brings reliability, efficiency, and sustainability to commercial cooling.

Why Dunham-Bush?
• Over a century of proven reliability
• Global presence and expertise.
• Pioneers in energy-efficient, green
refrigerant chillers.
• Wide capacity range, from small
commercial to large industrial

Product Overview
• High-efficiency absorption cooling solution powered by waste heat or hot water.
• Engineered for reliable, low mainteance, and eco-friendly performance.
• Perfect for applications seeking energy savings and sustainability.

Key Features
• Energy Efficient: Uses waste hot water, reducing electricity consumption.
• Eco-Friendly: CFC-free, environmentally sustainable cooling.
• Wide Operating Range: Handles hot water inlet temperatures between 70°C to 95°C.
• Reliable Operation: Fewer moving parts low maintenance cost.
• Quiet Performance: Smooth and silent absorption cycle.
• Flexible Applications: Ideal for industries with waste heat recovery potential.

Customer Benefits
• Reduce electricity bills significantly.
• Environmentally responsible cooling solution.
• Long product life with minimal maintenance.
• Helps meet green building & sustainability goals.

DMAR-H – Hot Water Driven Absorption Chiller

Energy Source: Hot water (waste heat or boiler loop)
Function: Converts available hot water into cooling, making it perfect for facilities with waste heat recovery or dedicated hot water sources.
Capacity Range: 422 kW – 9,305 kW
Key Benefit: Great choice for heat recovery, cogeneration, or facilities with industrial hot water streams.

DMAR-D – Direct-Fire Absorption Chiller

Energy Source: Direct-fire heat (e.g., gas burner)
Function: Uses direct flame-generated heat to drive the absorption cooling cycle — ideal where fuel heat is available without an intermediate loop.
Capacity Range: 528 kW – 7,034 kW
Key Benefit: Efficient cooling without external steam or hot water systems; perfect for plants with fuel-based heat sources.

DMAR-S – Steam Powered Absorption Chiller

Energy Source: Steam (from boiler or cogeneration)
Function: Uses steam heat to drive the absorption process — excellent for industrial sites or campuses with steam infrastructure.
Capacity Range: 528 kW – 11,631 kW
Key Benefit: Best for large-scale cooling where steam is abundant, such as manufacturing plants or utilities.

DMAR-Y – Exhaust & Hot Water Hybrid Absorption Chiller

Energy Source: Exhaust heat + hot water
Function: Flexible dual-source system that can use either exhaust gas heat or hot water to power the chiller, maximizing available thermal energy.
Capacity Range: 528 kW – 7,034 kW
Key Benefit: Versatile solution for facilities that generate both exhaust heat and hot water — boosting overall energy efficiency.