How they Work
Water heaters store water in a tank and heat it until it's ready to be used. When hot water is released from the tank, cold water is added to replace it.
Types of Water Heaters
There are many types of water heaters, including tank water heaters, solar water heaters, and tankless water heaters.
Energy Efficiency
The efficiency of a water heater is measured by its energy factor, which indicates how much hot water it produces per unit of fuel consumed.
Fuel Sources
Water heaters can be powered by electricity, natural gas, propane, or solar power. Natural gas water heaters are more expensive than electric water heaters, but they use less energy.
Heating Frequency
A water heater will typically heat the water inside 3–4 times a day, even if it's not needed that often.
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