When it comes to the different cooling systems for homes and businesses, many people don’t know about chilled water air conditioning. Unlike the more common HVAC systems that pump cold air throughout a building, these systems rely on cooled water to regulate interior temperatures. Despite not being as popular, chilled water systems are highly beneficial. Learn more about them with these frequently asked questions.

What to Know About Chilled Water Air Conditioning Systems

How do they work?

The system consists of a network of pipes filled with water that runs throughout a building. The water in the system passes through an evaporator, which uses a refrigeration cycle to remove any heat. The cooled water is then pumped through the pipes with a compressor.

As the cooled water works its way through the building, it absorbs the heat inside the rooms, decreasing interior temperatures. The now-warm water then passes through an expansion valve where it’s cooled once again, and the cycle repeats.

What are the benefits of this system?

A chilled water air conditioning system requires a higher upfront investment to install, but it provides drastic cost savings during the life of the equipment. Water is better at absorbing heat than air, and it doesn’t require costly refrigerants to work.

It also lasts much longer than an air-based system with minimal AC maintenance. Since most of the critical components are hidden inside walls, there’s less of a chance for damage to occur.

Are these systems right for everyone?

While a chilled air system does provide many benefits, it’s not recommended for everyone. In a humid area, the excess water in the air makes it more difficult for the water in the pipes to absorb heat, so the system has to work harder. The best place to install this system is in a large building with moderate humidity levels.

Are there any health benefits?

Since chilled water systems rely on water pipes to cool rather than air ducts, they can help maintain a healthier indoor air quality compared to central air systems. Without regular air duct cleanings, contaminants like dust, dirt, and allergens circulate throughout a building and cause symptoms like itchy eyes, runny nose, and respiratory issues. With a chilled water system, there are no ducts to transfer these contaminants.

If you’re interested in chilled water air conditioning systems, contact PurAir Hawaii in Honolulu. For more than 20 years, their technicians have provided AC maintenance, repairs, and installations for chilled water systems. Call (808) 589-2712 to schedule an on-site visit, or learn more about their services online.