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50+ Years
experience
Trusted Industrial HVAC Solutions for Energy Efficiency
Yazaki Energy Systems has been a global leader in sustainable cooling and heating solutions since 1951. Founded by Sadami Yazaki, our company pioneered the development of absorption chiller-heaters that utilize water as a refrigerant, setting industry standards for environmental responsibility and energy efficiency. With over 100,000 units operating worldwide, we specialize in gas-fired and water-fired chiller-heaters designed for commercial and industrial applications, including schools, hospitals, and industrial facilities. Our patented double-effect absorption cycle technology maximizes energy efficiency while reducing operational costs, making us a trusted partner for businesses seeking carbon neutrality. Our commitment to innovation is reflected in our ISO 9001 and ISO 14001 certifications, ensuring quality control and environmental stewardship.

We offer tailored solutions for waste heat recovery, combined heat and power (CHP) systems, and process cooling, supported by a global network of authorized service providers. Our team combines decades of expertise with cutting-edge engineering to deliver reliable, low-emission systems that meet the evolving needs of modern industries. From initial consultation to installation and maintenance, we prioritize client satisfaction through transparent communication and technical excellence. Our products are designed for durability, with features like hermetic vacuum integrity and minimal maintenance requirements, ensuring long-term value for our customers.
Services
Gas-Fired Chiller-Heaters Water-Fired Chillers Combined Heat and Power Systems Waste Heat Recovery Process Cooling Solutions Industrial HVAC Installation Energy Efficiency Consulting Maintenance Services Custom System Design Technical Support
Details
  • Year established: 1951
Highlights and features
  • We offer over 70 years of expertise in absorption chiller technology.
  • Our systems reduce fuel consumption by up to 17% compared to competitors.
  • We provide tailored waste heat recovery solutions for CHP systems.
  • Our ISO-certified manufacturing ensures unmatched quality and reliability.
  • We deliver 24/7 technical support and global service network coverage.
Associations and certifications
  • ISO 9001
  • ISO 14001
  • UL Listed
Services
Gas-Fired Chiller-Heaters
Our gas-fired chiller-heaters provide dual-purpose cooling and heating for commercial buildings using a patented double-effect absorption cycle. These systems reduce fuel consumption by 17% while maintaining ozone-safe operation through non-toxic lithium bromide and water refrigerants. Ideal for facilities seeking energy-efficient climate control solutions.
Water-Fired Chillers
Water-fired chillers utilize waste heat from solar, microturbine, or fuel cell sources to generate cooling capacity up to 200 RT. These systems enhance combined heat and power efficiency by converting thermal energy into cooling, making them ideal for industrial facilities aiming to optimize energy use and reduce operational costs.
Waste Heat Recovery
Our waste heat recovery systems transform excess thermal energy from industrial processes into usable cooling or heating. This technology improves overall energy efficiency by up to 36% temperature differential capacity, reducing reliance on external power sources while meeting sustainability goals for manufacturing plants and data centers.
Combined Heat and Power
Integrated CHP solutions generate electricity and usable heat simultaneously using gas-fired absorption technology. These systems achieve 83% burner efficiency while reducing NOx emissions below 30 ppm, making them ideal for hospitals and universities seeking reliable, eco-friendly power generation.
Industrial Process Cooling
Non-electric process cooling systems provide temperature control for manufacturing operations without grid dependency. Using vacuum-based absorption cycles, these chillers maintain precise cooling at 44.6F outlet temperatures while operating safely with non-toxic refrigerants in hazardous environments.
Questions
How do Yazaki absorption chillers work?
Our absorption chillers use heat energy to drive the cooling process through a lithium bromide-water solution cycle, eliminating the need for electric compressors while maintaining high energy efficiency.
What makes Yazaki chillers environmentally friendly?
We use water as the refrigerant and non-toxic lithium bromide solutions, avoiding harmful CFCs and reducing carbon emissions through efficient thermal energy utilization.
Can Yazaki systems integrate with existing HVAC infrastructure?
Yes, our modular chiller-heaters work with standard two-pipe hydronic systems and can be integrated with existing cooling towers or ground loop systems for seamless retrofitting.
What maintenance do Yazaki chillers require?
Our systems need only two annual service visits due to simplified designs with just two moving parts and gravity-fed solution distribution eliminating complex pump networks.
Are Yazaki chillers suitable for outdoor installation?
All units feature weatherproof NEMA 3R cabinets suitable for outdoor placement without additional modifications, reducing equipment room requirements.
How do Yazaki systems handle power failures?
The vacuum-based design prevents crystallization during outages through gravity-driven solution flow, eliminating the need for backup power systems during emergencies.