Solar water heaters are the easiest possible ways to harness the solar energy directly. Northern Lights pre-packaged solar water heating kits are easy to install and provide unparalleled performance and safety. They are widely used in commercial premises like hotels, Laundromats, restaurants, car washes etc. Here are a few types of solar water heaters discussed below: Pre Heat Solar Tank System Pre Heat Solar Tank System comes with two tanks, first is a solar pre heat tank and is a basic solar hot water storage tank. This pre-heat tank is used to provide warm water to an existing hot water tank. This heating kit is the most common retrofit as it utilizes the existing hot water tank and requires very little retrofit to the plumbing. The main supply line is routed to the pre-heat tank and drawn back into the supply after it is heated. However, the most efficient solar water heaters use the basic theory of stratification. In the stratification process, the solar water heater...