Deionized water, also known as demineralized water, is used in air conditioning systems for specific purposes. Here's a look at the purpose of using deionized water and the properties it needs to have:
Purpose of using deionized water:
Minimize mineral deposits: Deionized water is used to minimize the accumulation of mineral deposits, such as calcium, magnesium, and other dissolved solids. These minerals can build up inside the air conditioner, especially in components like the cooling coils, pipes, and nozzles. Mineral deposits reduce the efficiency of the system and can lead to clogs and malfunctions.
Prevent scale formation: Scale formation occurs when minerals in water precipitate and form a hard layer on surfaces. Deionized water, which is devoid of most minerals, helps prevent scale formation on critical components of the air conditioning system. This allows the system to operate more efficiently and prolongs its lifespan.
Properties of deionized water for air conditioning:
Low mineral content: Deionized water should have a very low mineral content, ideally close to zero. This is achieved by removing ions and dissolved minerals through a deionization process, typically involving ion exchange or reverse osmosis.
Neutral pH: Deionized water should have a neutral pH, around 7, to avoid any acidic or alkaline effects on the components of the air conditioner. Extreme pH levels can potentially damage the system.
Low conductivity: The conductivity of deionized water should be very low, indicating a minimal presence of ions. Low conductivity water helps prevent electrical conductivity issues and reduces the chances of corrosion in the air conditioning system.
Clean and free from contaminants: Deionized water should be free from impurities and contaminants. This includes particles, microorganisms, organic matter, and chemicals. Clean water helps maintain the cleanliness of the system and prevents clogs or blockages in the water lines or nozzles.
It's worth noting that not all air conditioning systems require deionized water. In some cases, regular tap water or treated water may be suitable. The specific water requirements for an air conditioner depend on factors such as the system design, manufacturer recommendations, and local water quality. It's advisable to consult the manufacturer's guidelines or a qualified HVAC professional for specific water requirements for your air conditioning system.