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BMS Controls FAQ

What Is A Chiller In Hvac?

What Is A Chiller In Hvac?

Are you feeling the heat this summer and wondering how your air conditioning system works? Look no further than a chiller. This essential component of HVAC systems is responsible for cooling large buildings, hospitals, and even data centers. But what exactly is a chiller, and how does it work? Let’s dive into the basics of chillers in HVAC and explore why they’re so important to keeping us cool during those scorching summer months.

What is a chiller in hvac?

A chiller is an essential part of a HVAC system, and its main function is to provide cooling for buildings. Chilled water is used in many applications, such as air conditioning, refrigeration, process cooling and heating.

Types of chiller

Chiller types can be broken down into three categories: air-cooled, water-cooled and oil-cooled. Air-cooled chiller types use compressed air to cool the fluid. Water-cooled chiller types use either water or a water/antifreeze mixture as the cooling medium. Oil-cooled chiller types use oil as the cooling medium.

How do chiller work?

Chillers work by lowering the temperature of a fluid, typically water, to make it freeze. This is done using either evaporation or absorption techniques. Evaporation chillers use water vapors to cool the fluid while absorption chillers use liquid nitrogen to do the same.

Chiller maintenance

A chiller is a device used in air conditioning and heating systems to transfer heat from one medium to another. In the air conditioning industry, chiller units are used to cool indoor air. They work by moving water or other fluid through metal coils that create a cold environment. The coils then transfer this coldness to the air passing through them.

Chillers come in different sizes and capacities, and can be found in both residential and commercial applications. Commercial chillers are typically larger and more efficient than their residential counterparts, as they need to handle higher loads and temperatures. They are also more likely to have multiple cooling channels so that different parts of the building can be cooled independently.

In general, maintenance on a chiller unit consists of cleaning the exterior surfaces, checking all hoses and connections for leaks, adjusting any necessary settings, and lubricating any moving parts where necessary. Some manufacturers recommend scheduling regular maintenance checks at least once every 6 months in order to ensure optimal operation of your unit


A chiller is a device used in heating and cooling systems that transfers heat from one medium to another. By doing so, it helps buildings maintain a comfortable temperature without the use of air conditioning or refrigeration. Chills can be used to lower the temperature of water, oil, or gas; they are also commonly used to cool down foods before they are served.