How does an ammonia chiller work?

Ammonia chillers are an essential part of many industrial and commercial cooling systems. They use a combination of chemical and physical processes to create a coolant that is used to regulate the temperature in a variety of industries. But how do these chillers actually work? In this blog post, we’ll take a look at the inner workings of an industrial ammonia chiller, exploring the process from start to finish.

What is an ammonia chiller?

An industrial ammonia chiller is an air conditioning system used to cool large commercial or industrial facilities. It uses ammonia as a refrigerant, which absorbs and releases heat to provide cooling. Ammonia is a strong and efficient refrigerant, which can chill air temperatures down to levels not attainable with traditional HVAC systems.

Industrial ammonia chillers are often used in settings where cooling needs are greater than those of typical residential or commercial spaces. Ammonia chillers are most commonly used in factories and industrial complexes, where precise temperature control is required for the production process.

Ammonia chillers are also popular for applications that require extremely low temperatures, such as food storage facilities and other cold-temperature-controlled environments. Ammonia chillers are reliable, efficient, and cost-effective, making them the ideal choice for cooling large facilities.

How does it work?

Ammonia has a very low boiling point and evaporates quickly when exposed to air, producing a cooling effect. The process begins with a compressor compressing the ammonia gas, increasing its pressure and temperature. This gas then passes through a condenser where it is cooled and liquified before being routed through an expansion valve. Here the pressure drops and the liquid ammonia evaporates, causing it to cool significantly. This cooled ammonia is then circulated through the evaporator where it absorbs heat from the surrounding air before being returned to the compressor to start the cycle again. 

What are the benefits?

Ammonia chillers offer a number of benefits that make them popular in a variety of applications. Ammonia is a highly efficient and reliable refrigerant, making it ideal for cooling large industrial systems and machines. Since ammonia is non-flammable and non-corrosive, it can be used safely even in areas with a high risk of fire or corrosion. In addition, ammonia-based chillers are energy efficient, meaning they require less energy to operate than traditional air conditioning units, which can save you money in the long run. Finally, ammonia-based chillers have a longer lifespan than many other cooling solutions, making them a more cost-effective long-term investment.

The main benefit of an industrial ammonia chiller is its efficiency and energy-saving potential. As ammonia has a very low boiling point, it requires less energy to operate than traditional chillers, allowing for significant cost savings. Additionally, because ammonia is non-toxic and non-flammable, it’s also much safer to use than other refrigerants.

How much do they cost?

The cost of an industrial ammonia chiller will depend on the size, type, and features that are required. They can come as small units designed for a singular purpose or they can be industrial-sized units with many features that can be incorporated into a production or manufacturing operation. Generally speaking, a small chiller unit could cost anywhere between $1,000 and $20,000. The larger units can cost upwards of $200,000 depending on the features and specifications. In addition to the purchase price, there are also shipping and installation costs associated with ammonia chillers as well as any additional parts or supplies needed. Additionally, it is important to take into account any maintenance costs associated with the chiller to ensure that it is running efficiently and safely over its lifetime.


Industrial ammonia chillers provide a powerful and efficient cooling solution for a wide range of industrial applications. They are an effective way to regulate temperatures in large buildings, warehouses, and other industrial and commercial facilities. While the complexity of these systems means that installation should always be handled by a professional, their long life span and minimal environmental impact make them a great choice for businesses looking for an energy-efficient cooling system. With the right installation, maintenance, and repair, an industrial ammonia chiller can offer reliable cooling for many years.

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