Conventional Water Heaters

Conventional water heaters are the most common type of water heaters. These units have an insulated tank where water is heated and stored until it's needed. They're available in electric, liquid propane (LP), and natural gas models. Natural gas and LP water heaters normally use less energy and are less expensive to operate than electric models of the same size.

Conventional water heaters are designated by the amount of water they hold in gallons. Tank size is one of the major considerations when purchasing one of these water heaters.


There are two reasons to consider high-efficiency water heaters when looking to purchase a conventional model: saving money and helping the environment. Water-heating efficiency is measured by an Energy Factor (EF) rating. The higher the EF, the more efficient the model. While some of the most efficient models might be slightly more expensive, they're designed to save you money in the long run  and they'll do so in an environmentally friendly way. Compare the performance and operating costs of different water heater models by taking a look at the EnergyGuide label. This information gives you an idea how the water heater model