Cooling Pads – For smaller duct coolers, wood wool pads serve a good purpose and are economical too. However, when we look at the benefit of centralized and uniform cooling in multiple spaces of a single premise (different rooms of a residential apartment or diverse spaces in a business unit) the cooling pads need to be of supreme quality for Duct Air Coolers. With the capacity for substantial water absorption and large evaporative capability for more effective cooling, premium cellulose or honeycomb pads are commonly used. These cooling pads are easy to clean and dust resistant. These pads come at a price range of 280 – 350 INR per sq. ft and are suitable for both homes as well as commercial usage.