Water heater thermostats should be set no higher than 120 degrees. Quick recovery water heaters have two thermostats and both should be set at the same temperature. Ad an extra layer of insulation to older water heaters located in unheated areas. Be sure not to cover the pressure relief valve, drain valve, and electrical connection.
Water heaters have a number of vital parts:
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The outer casing is coated with enamel, to resist stains, and hold in insulation.
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The inner tank is metal with a bonded glass lining to deter rust and corrosion and ensure clear, clean water.
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The anode is a metal rod immersed in water that adds extra protection against corrosion.
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Thermostats control the heating element and maintain the required water temperature.
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Immersion heating elements are sheathed in copper and provide complete contact with water for instant heat transfer and fast recovery.
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The inlet directs cold water to the bottom of the tank without affecting the hot water in the upper portion.
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The drain valve allows drainage of sediment from the bottom of the tank.
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The pressure relief valve is a safety device to prevent excessive temperatures or pressures inside the tank.
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Insulation covers the tank to reduce heat loss and ensure efficient operation.