Industry-leading absorption cooling technology powered by waste heat. Natural refrigerant (water), exceptional efficiency, proven reliability across 90+ countries worldwide.
Thermax is one of the world's leading manufacturers of absorption chillers. Our technology is extensively used worldwide for industrial refrigeration, air conditioning, process cooling and heating applications.
We offer an extensive range of chillers that run on waste heat from steam, hot water, exhaust gases, and other fuel sources. True to our commitment to sustainability, our technology uses natural refrigerant — water.
Thermax's innovative and energy-efficient heat recovery-based cooling solutions help customers reduce dependency on grid power, lower operating costs, and achieve environmental compliance across industrial and commercial sectors globally.
From single-effect hot water machines to advanced double-effect steam systems — Thermax delivers the right absorption chiller for every application, heat source, and capacity requirement.
Low-pressure steam driven
The most established absorption technology worldwide — ideal for utilizing low-grade waste heat from industrial processes. Proven reliability with minimal electrical consumption.
Medium to high-pressure steam fired
Advanced series flow technology delivers superior efficiency and negligible corrosion rates. Thermax double effect chillers are designed so the highest concentration and temperature of lithium bromide solution never occur simultaneously — ensuring exceptional reliability and long service life. Industry-leading solution for high-performance industrial cooling.
Natural gas or fuel oil combustion
Double-effect performance using direct fuel combustion — ideal for sites without access to steam infrastructure or where natural gas/fuel costs are favorable. Integrated burner technology with low NOx emissions. Provides operational independence and flexibility for remote locations or facilities seeking to reduce electrical grid dependency.
Low temperature waste heat recovery
Specifically optimized for low-grade waste heat recovery from hot water sources. Operates effectively on solar thermal systems, engine/turbine waste heat, industrial waste heat circuits, or geothermal energy. Maximum waste heat utilization for sustainable cooling — ideal for renewable energy integration.
Cogeneration (CHP) applications
Designed specifically for exhaust gas heat recovery from gas engines and turbines in cogeneration (CHP) plants. Ideal for trigeneration systems (combined cooling, heating, and power). Maximizes overall efficiency of CHP installations by converting waste exhaust heat into productive cooling — achieving total energy utilization exceeding 85%.
Absorption chillers offer compelling advantages over conventional electric compression chillers — making them the ideal choice for facilities with access to waste heat or combined heat and power systems.
Operate on waste heat instead of consuming grid electricity for compression. Reduce electrical demand for cooling by 90% or more — cutting energy costs and carbon emissions simultaneously.
Water (H₂O) is the refrigerant — completely natural, non-toxic, non-flammable, and zero global warming potential. No F-gas regulations, no refrigerant phase-outs, no compliance concerns.
Convert low-grade waste heat from steam, hot water, and exhaust gases into productive cooling. Achieve overall facility energy efficiencies of 80-90% when integrated with CHP systems.
Far fewer moving parts. No compressor, no complex mechanical systems. Simple, robust design delivers reliable 24/7 operation with minimal service requirements over 20+ year lifespan.
Thermax absorption chillers operate successfully in more than 90 countries — from USA to Middle East to Southeast Asia. ISO 9001 certified, ASME/CE/PED compliant, backed by decades of expertise.
Integrate seamlessly with cogeneration, trigeneration (CHCP), solar thermal, biomass boilers, and industrial waste heat recovery systems. Multi-energy capability provides operational redundancy.
Thermax absorption chillers serve more than 50 industries worldwide — from pharmaceuticals to data centres, refineries to hotels. Proven performance in the world's most demanding cooling applications.
Process cooling, reactor cooling, distillation processes
Clean room cooling, process chilling, API manufacturing
Process cooling, cold storage, dairy processing, breweries
Air conditioning, district cooling, shopping complexes
Textiles, automotive, steel, plastics, paper & pulp
Inlet air cooling for gas turbines, ammonia plants
Server cooling with CHP exhaust gas, trigeneration
Universities, hospitals, airports, government facilities
Thermax absorption chillers incorporate decades of engineering innovation — delivering exceptional reliability, efficiency, and ease of operation that set the industry standard.
Thermax proprietary series flow design ensures the highest concentration and highest temperature of lithium bromide solution never occur simultaneously. This breakthrough prevents crystallization and delivers negligible corrosion rates compared to parallel flow or reverse flow technologies.
PLC-based control panel with touchscreen HMI provides complete visibility and control. Real-time monitoring of all operating parameters, automatic setpoint adjustment, and predictive diagnostics ensure optimal performance with minimal operator intervention.
Plate-type solution heat exchangers maximize internal heat recovery — achieving higher COP and better part-load efficiency. Stainless steel construction ensures long life and reliability even in harsh operating conditions.
VFD-equipped solution pumps automatically adjust flow rates based on cooling demand. Improves COP during part-load operation, reduces electrical consumption, extends pump life, and delivers exceptionally stable operation across varying load conditions.
Many Thermax models can operate on multiple heat sources simultaneously or switch between them. Run on exhaust gas with supplementary steam firing, or transition between hot water and direct fuel firing — providing operational flexibility and reliability.
Thermax absorption chillers are manufactured to the highest international standards and hold certifications from leading global bodies. ISO 9001, ISO14001, ISO27001, ISO45001 Compliant, ASME and PED, pressure vessel code, CE marked, and other country-specific compliance.
An absorption chiller produces chilled water using waste heat (steam, hot water, exhaust gas or fuel) instead of electricity-driven compression. It uses water as a natural refrigerant and a lithium bromide salt solution as absorbent. Thermax absorption chillers range from 175kW to 12,300kW and can chill water down to -5C.
Thermax offers single-effect steam, double-effect steam, direct-fired, hot-water driven, and exhaust-gas driven absorption chillers, covering 175kW to 12,300kW with COP up to 1.5 on double-effect models.
Absorption chillers run on waste heat rather than grid electricity, use water (GWP 0) as refrigerant, have few moving parts, require low maintenance, and integrate with CHP and trigeneration systems for 80-90% overall energy efficiency.
Our engineering team will analyze your facility's heat sources, cooling loads, and operational requirements to design the optimal absorption chiller system — maximizing energy savings and return on investment.
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