All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(5207 products available)
There are several types of chiller indoor units for air conditioning. Each is designed to meet specific cooling needs and building configurations. So, here are the most common types:
Fan Coil Units (FCUs)
These are the most common type of chilled water unit.
They use a fan to circulate air over the chilled water coil. This cools the air, which is then distributed throughout the space.
They are commonly used in hotels, offices, and other large buildings.
Because FCUs are simple and easy to install, they make an excellent choice for retrofitting existing buildings.
Chilled Beams
These are more advanced and costlier cooling systems.
They are called “beams” as they use the movement of air (natural or forced) to distribute cool air from a chilled water system.
The beams are installed in the ceiling, with chilled water flowing through coils inside the beam.
As warm room air rises, it is drawn into the beam and cooled, then released as cool, conditioned air.
They can be either active (with a fan to help airflow) or passive (relying on natural convection).
Cooling Drag Units
These are similar to fan coils but are installed in a ceiling grid like other duct elements.
This allows for an easier integration into existing ductwork in commercial buildings.
They are especially useful in retrofitting older buildings with new cooling systems.
Modular Chilled Water Units
These units are designed to be modular and can be easily expanded by adding more modules.
This flexibility makes them ideal for buildings that require scalable cooling solutions.
Custom Built Chiller Indoor Units
These are often necessary when dealing with unique large-scale commercial.
They are also useful in institutional buildings that require specific layouts or capacities.
Large buildings with high ceilings and special features typically require customized solutions for efficient cooling.
Cooling
This is the primary function of a chiller indoor unit.
The unit uses chilled water to cool air that is then circulated throughout the space.
As the water absorbs heat from the air, it warms up and must be re-cooled by the chiller.
Dehumidification
Chilled water coils can also condense moisture out of the air.
This helps maintain optimal humidity levels, especially in humid climates.
Energy Efficiency
These units offer high energy efficiency.
This is because they centralize cooling and use a chiller system rather than multiple individual units.
They are cost-effective, especially for large commercial buildings.
Scalability and Control
A great advantage of an indoor chilled water unit is their control.
Modern units have smart systems that regulate temperature in different zones. They are also scalable.
This allows additional units or circuits to be added as cooling needs increase.
Fan and Coil System
Indoor units use fans and coils to cool air for space conditioning.
Chilled water flows through coils, which are then heated by air, resulting in cooled, dehumidified air.
Thermostatic Expansion Valve (TXV)
This valve is responsible for controlling the flow of refrigerant.
It does this by precisely metering refrigerant to the evaporator coil. It maintains efficiency to ensure optimal cooling.
Draining System
Indoor units have components like drain pans that manage condensed water removal.
This prevents water accumulation, which can lead to mold and other water-related issues.
Filters
These units have filters that capture dust, pollen, and other particulates.
This improves indoor air quality.
Control System
Modern chiller indoor units have smart thermostats and controllers.
They regulate temperature, fan speed, and humidity levels for energy efficiency.
Compact and Modular Design
These indoor units are compact, allowing for easy installation in various building types.
Modular designs provide flexibility in expanding or reducing the cooling system as needed.
Durable and Aesthetic Enclosures
Indoor units are fitted with sturdy enclosures that protect the internal components.
As they are installed in visible areas, they are designed to blend with the interior decor of commercial and residential spaces.
Energy-Efficient Components
Units are designed with high-efficiency fans, coils, and blowers that reduce energy consumption.
Advanced compressor and motor technology improve the system's overall performance.
Low Noise Operation
The units are designed for low-noise operation since they are often located in occupied spaces.
So, factors like sound-dampening insulation are included to minimize the noise produced by the fan and compressor.
Indoor units are versatile cooling solutions for diverse applications. From large commercial buildings to industrial facilities and residential areas, these units are an ideal choice. Here are common scenarios where chiller indoor units are used:
Commercial Buildings
Indoor units are commonly found in offices, schools, hospitals, and other commercial spaces.
As these buildings have high cooling demands, chiller indoor units provide efficient, centralized cooling to manage these large spaces.
Industrial Facilities
They are used in industrial settings to maintain optimal temperatures for machinery, processes, and work environments.
This enhances productivity and ensures the safety and comfort of employees.
Large Residential Complexes
Units are widely used in large apartment buildings, condominiums, and residential complexes.
These complex provide a centralized, efficient cooling solution for multiple units.
Data Centers
These centers generate significant heat from servers and equipment.
Consistent cooling is vital to prevent equipment failure. Indoors units maintain optimal operating temperatures to ensure data integrity and system reliability.
Retail Spaces and Shopping Malls
Indoor units maintain a comfortable shopping environment for customers.
This encourages shopping and enhances customer experience in malls and retail stores.
High-Rise Buildings
Chiller indoor units are ideal for high-rise buildings and skyscrapers.
As the units are powerful enough to cool multiple floors simultaneously from a centralized system, they enhance the building's aesthetic appeal.
Here are some important considerations when choosing an indoor water chiller. This will help ensure that buyers select the most suitable system for their needs.
Cooling Capacity
Cooling capacity is the most important factor when selecting a chiller. It refers to the amount of heat an air conditioning system can remove from a space. This is usually measured in BTUs or kilowatts.
An oversized unit will cause short cycling and inadequate humidity control. On the other hand, an undersized unit will struggle to maintain comfortable temperatures, resulting in excessive energy use.
A buyer should perform a detailed load calculation to determine the required cooling capacity. Consider the building's size, insulation, windows, and local climate.
Energy Efficiency
Chiller energy efficiency helps to lower the operating cost. Efficiency is measured by the unit's Energy Efficiency Ratio (EER) or Coefficient of Performance (COP).
The higher these numbers are, the more efficient the system will be. So, buyers should look for systems that have high EER or COP.
Type of Chiller
Different chillers use various methods to provide cooling. For instance, air-cooled chillers use the ambient air to cool the refrigerant. Water-cooled chillers use water from a cooling tower or a body of water.
Each type has its advantages, so buyers should consider the pros and cons of each to select the most suitable option.
Energy Regulations
As energy efficiency is very important, buyers should ensure that the chiller complies with local energy regulations. Failing to do this will cause them to incur high costs in the future.
Maintenance
Buyers should consider the maintenance requirements of the chiller system to avoid frequent breakdowns. Luckily, most modern chillers are high in technology and easily maintainable.
Remote Monitoring
With the advancement of technology, buyers should consider units that have remote monitoring and control capabilities. This is because it helps the user to easily monitor the unit's performance.
Fan coil units are the most common type of chiller indoor unit. They use fans and coils to cool air and offer simple and effective cooling solutions for large commercial and residential buildings.
Chiller indoor units can last 15-20 years with proper maintenance. Regular care, like cleaning filters and annual professional inspections, can extend their lifespan and keep them running efficiently.
Chilled beams provide energy-efficient cooling by utilizing the natural convection process. This reduces the need for additional air circulation. They are also low in maintenance, making them a cost-effective long-term solution.
Chilled water units are ideal for retrofitting existing buildings because they are modular and can be integrated into existing HVAC ductwork and piping systems without extensive renovation.
Routine practices like cleaning filters and inspecting components are some of the ways to ensure the units function efficiently. Other key considerations include checking refrigerant levels, inspecting coils, and scheduling professional maintenance.
