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Difference between chiller and heat pump

The main difference between a chiller and a heat pump lies in their purpose and function:


Chiller vs. Heat Pump — Quick Comparison


FeatureChillerHeat Pump
Primary FunctionRemoves heat to cool water or airCan cool or heat by reversing the cycle
Operation CycleAlways moves heat outCan reverse cycle (cooling & heating)
OutputChilled water (typically 4–10°C)Chilled water or hot water/air
Heating?No (cooling only)Yes (acts like a heater in reverse mode)
ApplicationsIndustrial cooling, HVAC (cooling only)HVAC (cooling and heating)
Energy RecoveryNo heat recovery by defaultCan recover waste heat for heating
ComponentsEvaporator, compressor, condenser, expansion valveSame components + reversing valve (for switching modes)


What Is a Chiller?

A chiller is a system that removes heat from a process or space and transfers it elsewhere, typically using vapor-compression refrigeration. It produces chilled water (or coolant) for air conditioning or industrial cooling.


Air-cooled chillers: reject heat to the air

Water-cooled chillers: reject heat via a cooling tower


Used in: large buildings, industrial cooling, food processing, plastic molding.


What Is a Heat Pump?

A heat pump is a system that can both cool and heat by reversing the refrigeration cycle. In cooling mode, it works like a chiller or AC. In heating mode, it extracts heat from outside (even cold air) and transfers it indoors.


Air-source heat pumps: absorb/release heat from air

Water-source or geothermal: use ground or water sources


Used in: residential & commercial HVAC, underfloor heating, and sustainable energy systems.


Air Source Vortex Type Heat Pump Water Heater

Air Source Vortex Type Heat Pump Water Heater

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Air Source Vortex Type Heat Pump Water Heater

Air Source Vortex Type Heat Pump Water Heater

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Water Cooled Scroll Type Heat Pump Water Heater

Water Cooled Scroll Type Heat Pump Water Heater

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Air Source Vortex Type Heat Pump Water Heater

Air Source Vortex Type Heat Pump Water Heater

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Water Cooled Scroll Type Heat Pump Water Heater

Water Cooled Scroll Type Heat Pump Water Heater

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Water Cooled Scroll Type Heat Pump Water Heater

Water Cooled Scroll Type Heat Pump Water Heater

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Water Cooled Screw Type Heat Pump Water Heater

Water Cooled Screw Type Heat Pump Water Heater

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Difference between chiller and heat pump

How to choose chillers and heat pumps in different situations？

When to Choose a Chiller

● Choose a chiller when:


1. Cooling-only requirement

Example: Server rooms, process cooling in factories, large cold storage.


2. High cooling load with no need for heating

Air-cooled chillers: Easier installation, better for small-medium applications.

Water-cooled chillers: More efficient for large buildings but needs cooling towers.


3.  Industrial use

Precision temperature control for equipment or chemical processes.


4. Climate is hot and no space heating is needed.


When to Choose a Heat Pump

● Choose a heat pump when:


1. Both heating and cooling are needed


Great for homes, office buildings, hospitals, hotels, etc.

Reduces the need for separate systems.


2. Mild to moderate climates


Air-source heat pumps work best above -5°C (23°F).

In colder climates, consider ground-source (geothermal) or hybrid systems.


3. Energy efficiency is a priority


Heat pumps can be up to 300–400% efficient (COP > 3).


4. Sustainability goals


Heat pumps use electricity and can integrate with renewable energy.


Everyone wants their energy system to be energy efficient, but you should know that the efficiency of different types of chillers is calculated differently. For example, the efficiency of a centrifugal chiller is calculated differently than that of an abs

Everyone wants their energy system to be energy efficient, but you should know that the efficiency of different types of chillers is calculated differently. For example, the efficiency of a centrifugal chiller is calculated differently than that of an abs

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There is a distinct difference between the condenser of an air-cooled chiller and the condenser of a water-cooled chiller. Air-cooled chillers are equipped with condensers that use ambient air to lower the temperature of the refrigerant. Fans are used to

There is a distinct difference between the condenser of an air-cooled chiller and the condenser of a water-cooled chiller. Air-cooled chillers are equipped with condensers that use ambient air to lower the temperature of the refrigerant. Fans are used to

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Air-cooled chillers are more common in small to medium sized facilities where space and water may be limited. The cost to install and maintain these chillers is lower than water-cooled chillers, but they typically have a shorter life span. These chillers

Air-cooled chillers are more common in small to medium sized facilities where space and water may be limited. The cost to install and maintain these chillers is lower than water-cooled chillers, but they typically have a shorter life span. These chillers

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Huazhao has been focusing on providing professional solutions for all our foreign and domestic customers in different businesses and earning a good reputation. Our company is the leading international chiller supplier,

Huazhao has been focusing on providing professional solutions for all our foreign and domestic customers in different businesses and earning a good reputation. Our company is the leading international chiller supplier,

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High pressure discharge is common in water cooler chillers and is almost always caused by a poor water treatment regime. Make sure that your building or your customer's building has a strict water treatment regime. Especially if you have open cooling towe

High pressure discharge is common in water cooler chillers and is almost always caused by a poor water treatment regime. Make sure that your building or your customer's building has a strict water treatment regime. Especially if you have open cooling towe

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A water cooled chiller rejects the absorbed heat to an additional fluid loop that can then reject the heat through a secondary device such as a cooling tower (more common) or dry cooler.

A water cooled chiller rejects the absorbed heat to an additional fluid loop that can then reject the heat through a secondary device such as a cooling tower (more common) or dry cooler.

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Scroll compressors fit into a good niche market. They are well suited to smaller process applications - especially when operating times are more sporadic (< 24 hours/day). We classify our scroll units as medium sized process chillers. Scroll chillers can

Scroll compressors fit into a good niche market. They are well suited to smaller process applications - especially when operating times are more sporadic (< 24 hours/day). We classify our scroll units as medium sized process chillers. Scroll chillers can

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At Huazhao Refrigeration Equipment, we offer a wide range of air-cooled and water-cooled industrial chillers designed to meet all your industrial and commercial process cooling needs. To find out more about how we can help meet your specific process cooli

At Huazhao Refrigeration Equipment, we offer a wide range of air-cooled and water-cooled industrial chillers designed to meet all your industrial and commercial process cooling needs. To find out more about how we can help meet your specific process cooli

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The Heat Exchangers provide a clean stable, controlled closed-loop water cooling system. The fluid to fluid heat exchangers offer the advantage of removing heat from the circulating coolant (via a water to water heat exchanger) and transfer heat to either

The Heat Exchangers provide a clean stable, controlled closed-loop water cooling system. The fluid to fluid heat exchangers offer the advantage of removing heat from the circulating coolant (via a water to water heat exchanger) and transfer heat to either

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In most process cooling applications, a pump system circulates chilled water or a water/glycol solution from the chiller to the process. This cold fluid removes heat from the process, while the hot fluid is returned to the chiller. Process water is the wa

In most process cooling applications, a pump system circulates chilled water or a water/glycol solution from the chiller to the process. This cold fluid removes heat from the process, while the hot fluid is returned to the chiller. Process water is the wa

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Chiller systems come in a wide range of sizes and designs, and can be used as small, localised or portable chillers for smaller applications, or large central chillers designed to provide cooling for the entire process.

Chiller systems come in a wide range of sizes and designs, and can be used as small, localised or portable chillers for smaller applications, or large central chillers designed to provide cooling for the entire process.

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Industrial processes generate large amounts of heat, which must be dissipated to avoid damage to sensitive equipment and to protect finished products.

Industrial processes generate large amounts of heat, which must be dissipated to avoid damage to sensitive equipment and to protect finished products.

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Before buying an air-cooled chiller, it is important to know what the term

Before buying an air-cooled chiller, it is important to know what the term "air-cooled chiller" means. Air-cooled chillers, like all chillers, require cooling - the term 'air-cooled' simply refers to how the chiller discharges heat. Air-cooled chillers tr

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Industrial chillers are used in a variety of applications where chilled water or liquids are circulated through process equipment. Industrial chiller systems are typically used to cool products and machinery for many different applications including injec

Industrial chillers are used in a variety of applications where chilled water or liquids are circulated through process equipment. Industrial chiller systems are typically used to cool products and machinery for many different applications including injec

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A chiller is a cooling mechanism designed to produce a fluid that can be cooled by removing heat from the fluid. The type and use of a chiller depends on the temperature required and the type of refrigerant, which can be either a liquid or a gas. Cooling

A chiller is a cooling mechanism designed to produce a fluid that can be cooled by removing heat from the fluid. The type and use of a chiller depends on the temperature required and the type of refrigerant, which can be either a liquid or a gas. Cooling

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Water-cooled screw chillers also belong to chillers, because their main components use screw compressors, so the name can be called water-cooled screw chillers. Widely used in plastics, electroplating, electronics, chemical, pharmaceutical, printing, food

Water-cooled screw chillers also belong to chillers, because their main components use screw compressors, so the name can be called water-cooled screw chillers. Widely used in plastics, electroplating, electronics, chemical, pharmaceutical, printing, food

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