Chilled water systems is a type of system commonly used in large commercial buildings to provide air conditioning.
Chilled water curcuits work by circulating chilled water through a network of pipes to air handling units or fan coil units, which use the chilled water to dehumidify the air. The water is cooled by chillers-either air cooled or water cooled, then pumped throughout the building. After absorbing heat from the indoor spaces, the warmed water returns to the chiller to be cooled again. Chilled water systems are efficient, scalable and ideal for maintain consist temperatures in a charge or multi-zone building.
Installation of Chilled Water Systems
At Neem Mechanical, we undertake within our business the installation, and commissioning of chilled water systems tailored for commercial buildings, industrial facilities, hospitals, data centres, and large-scale residential projects. we strive to deliver reliable, energy-efficient cooling solutions with a focus on long-term performance and sustainability, whilst ensuring a free flowing installation with certified and competent engineers

Key Components of a Chilled Water Circuit
How a Chilled Water Circuit Works
- Chiller – Cools water to a set temperature (typically between 4°C and 7°C).
- Pumps – Circulate chilled water throughout the system.
- Chilled Water Pipes – Transport chilled water to air handling units (AHUs) and fan coil units (FCUs).
- Air Handling Units (AHUs) & Fan Coil Units (FCUs) – Use chilled water to cool air that is then distributed into spaces.
- Cooling Towers (for Water-Cooled Systems) – Reject heat from the system by cooling condenser water.
- Control Valves & Sensors – Regulate temperature, pressure, and flow.
- The chiller cools the water to a set temperature.
- Pumps distribute chilled water to AHUs or FCUs.
- AHUs and FCUs use the cold water to cool air, which is then supplied to rooms.
- The warmed water returns to the chiller to be re-cooled and recirculated.