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How Does A Chiller Work Hvac?

How Does A Chiller Work Hvac?

Are you curious about how your air conditioning system keeps things cool during hot summer months? Look no further than the chiller! HVAC systems rely heavily on chillers to regulate temperature and control humidity levels. But how exactly does a chiller work? In this blog post, we’ll dive into the inner workings of a chiller and explore its role in keeping us comfortable year-round. Get ready to become an expert on all things HVAC!

What is a Chiller and How Does it Work?

A chiller is a device used in the cooling of air or other gases. It uses an external refrigerant to reduce the temperature of the gas, which then travels through coils to absorb heat from the surroundings. This decreases the temperature of the gas sufficiently that it can be used in HVAC systems.

There are two main types of chillers: centrifugal and immersion. Centrifugal chillers work by spinning a tube around a central shaft. Immersion chillers use water or oil to cool the air.

Types of Chiller Systems

Types of Chiller Systems

A chiller is a machine that uses refrigeration to keep food or other materials cold. There are three main types of chiller systems: mechanical refrigeration, liquid-cooled refrigeration, and gas-cooled refrigeration. Mechanical refrigeration is the oldest type of chiller system and uses a compressor to move air around the inside of a metal tube. Liquid-cooled refrigeration systems use containers of liquid (usually water) to cool the air. Gas-cooled refrigeration systems use compressed gas to cool the air.

The Components of a Chiller System

A chiller system is a crucial component of an air conditioning unit. It removes heat from the air and sends it to the atmosphere, or to another location where it can be used. The components of a chiller system are as follows:

1. The compressor. This is the part of the chiller that works to remove heat from the air.
2. The condenser. This is the part of the chiller that cools down the air and sends it out into the atmosphere or another location.
3. The evaporator coils. These are what take in the cooled air and turn it into water vapor (H2O).

Putting It All Together: A Chiller System in Action

A chiller system uses refrigerants and water to lower the temperature of air or liquids. The National Institute of Standards & Technology defines a chilled liquid as having an ambient temperature below 40°F (4°C).

The most common type of chiller is the evaporator-condenser unit, in which a refrigerant circulates between two coils of metal tubing. The tubes are filled with water, which absorbs heat from the refrigerant. The refrigerant then passes through a heat exchanger, where it warms up the water and removes its heat. This hot water is then used to cool other rooms in the building.


A chiller is a crucial piece of equipment for any business that operates in an environment with extreme temperatures. It’s important to understand how a chiller works so you can ensure it’s being used correctly and efficiently. In this article, we cover the basics of how a chiller works and show you how to properly diagnose and fix common issues. By understanding how a chiller works, you can ensure your business stays cool in even the most extreme conditions!