A Bosch hot water heater can be purchased from a website that specializes in plumbing supplies, such as Plumbingsupply.com. Bosch hot water heaters are also available from mass market retailers, such as Amazon.com, as of 2015.
Bosch sells water heaters with gas and electric energy sources. Many Bosch water heaters are tankless and are typically used for residential applications. Bosch water heaters are typically not used for outdoor installations. Multiple heaters can often be connected to allow for greater water flow capacity. Bosch sells heater varieties that can be used for whole-house or space heating, and many are energy-star-rated appliances.