Kawasaki Thermal Engineering, a pioneering manufacturer that leads the industry with excellent technologies, has developed absorption chiller-heaters that consume far less fuel and electricity than earlier models. The module type absorption chiller-heaters also take up less space, and allow a single unit to be halted without halting other units. Since these products can be delivered module by module, legacy systems can be easily upgraded.
The product line comprises gas-fired and oil-fired absorption chiller-heaters and steam-driven absorption chillers, covering a wide variety of operating environments including harsh conditions at factories, commercial buildings, hotels, schools and hospitals.
We can assist all your needs for product procurement and after-sale service, including making suggestions for energy saving and providing the latest information on new products.
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SIGMA ACE Absorption Chiller-Heaters

Energy-efficient and high product quality! These next-generation absorption chiller-heaters will meet all your needs along with the standard design features.
Cooling capacity: 281 to 2462KW
- Highly energy efficient (JIS-based coefficient-of-performance 1.2, 1.3 or 1.4 depending on type)
- Seven-year warranty for the vacuum module of the main unit
- Prediction support as standard
- Digitized proportional-integral-derivative (PID) control as standard (for controlled response to a sudden change in load)
- Special splitting design (optional)
SIGMA ACE 3.5 and 3.7 Series of Absorption Chillers
These next-generation absorption chillers for district cooling/heating are designed to be eco-friendly and minimize operating costs.
Cooling capacity: 3165 to 9142KW
SIGMA ACE 3.9 Series of Absorption Chillers
These absorption chillers deliver excellent performance and high product quality as standard design features.
Cooling capacity: 281 to 2462KW
Steam consumption: 3.9kg/h・RT
The series comprises 15 models spanning the above range of performance.
- Industry-leading product quality with the longest warranty period
- Designed to tolerate heavy load conditions; seven-year warranty
- Intelligent operation panel (with prediction support) and remote maintenance terminal as standard features
- Easy replacement of legacy systems (allows splitting into up to five modules)
























