Over time the internal and external surfaces of coils (condenser and cooling) in HVAC systems can have a heavy build up of dust, dirt, pollen, moisture and other contaminants. The heavier the build up of such contaminants effects the available surface for heat transfer. The less heat transfer also reduces the efficiency of the heat transfer process which can lead to poor system performance, decreased longevity and excessive energy consumption. It is important that the air condition coils are regularly inspected and maintained to ensure they operate at optimum efficiency.

In addition to energy efficiency and system performance benefits, regular coil cleaning also vastly improved indoor air quality, something which gets overlooked. This has led to regular coil cleaning becoming a regulatory requirement in certain circumstances.

There are a number of ways EHS can effectively clean coils, such as dry vacuuming using brush head attachments to dislodge any debris stuck between coils. The most effective way to clean coils is to use a high pressure water machine (i.e gernie), and also use coil cleaning chemical, that helps to promote the dislodgement of debris and removing the fine film of mould or dust that sits on the surfaces of the fins and coils.

According to the US Department of Energy (DOE) a dirty condenser coil can increase condenser energy consumption by 30%.



Cooling Coil Before

Cooling Coil after

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