Tankless Water Heaters Direct site mark Tankless Water Heaters Direct

On demand gas, propane and electric hot water heaters

An application note describing how AquaStar 125 Design Features is used in practice.

AquaStar Specs and Design Features

AquaStar by Bosch Tankless Water Heaters are fueled by either Propane or Natural Gas. This page will give you all the Specs and design info for all the water heaters made by AquaStar

The features list is long

The AquaStar is designed to last a lifetime. The quality of the AquaStar begins with this inside story: all water parts are solid copper or solid brass. The unit is constructed with stainless steel and aluminum. Unlike tank heaters, every part is replaceable or recyclable. Properly maintained, this may be the last water heater you ever buy.

  • all water parts are solid copper or solid brass
  • unit is constructed with stainless steel and aluminum
  • casing is finished with baked epoxy
  • heat exchanger is made of solid copper
  • burners are made of stainless steel
  • unit has a safety thermocouple and overheat shutoff protection
  • AGA and CGA design certified
  • 82% efficiency rating and .80 energy factor — highest in industry
  • longest warranty (10 years on the heat exchanger)
  • Available in both propane (LP) and natural gas

Manufactured by Robert Bosch.

Few names in manufacturing are as well known as Robert Bosch. You may already use some of their well designed power tools. And Bosch has been making tankless water heaters for over 60 years. More than 4,000 units are produced every day at Bosch's Vulcano factory It is a state of the art facility with rigorous standards for quality control, including ISO 9002.