Home improvement stores, brand websites and appliance stores sell electric water heaters online. Discount department stores and online retailers also sometimes sell electric water heaters.
Home improvement websites such as Home Depot and Lowe's sell several brands of electric water heaters, including Rheem, Whirlpool and US Craftmaster. The water heaters can be shipped directly to the customer or to the store. Some websites even offer a comparison feature so that customers can place two or three models side-by-side on their computers to inform their selection. The websites also offer user reviews in most cases. Sears offers similar options for online shopping and even includes an option to select products being sold from independent sellers. Customers can also find models that are in stock in their local stores.
For customers with a specific brand in mind, that company's website is a good place to start. Brand websites such as AO Smith offer the largest selection of their own electric water heaters. Customers can narrow down the choices according to capacity, product line, features, type, voltage and price. Some models are even available as hybrids, meaning the heater saves energy by pulling in environmental heat.
Discount department stores and online retailers such as eBay may not offer quite as extensive an inventory as specialty stores. However, such websites usually feature discounted merchandise. In the case of eBay, customers can even purchase used electric water heaters.