Bosch water heaters are known for their excellent quality, reliable engineering, and innovative tankless technology.

Manufacturing both residential as well as commercial and industrial water heaters, Bosch units are part of the highly respected Bosch Thermotechnik GmbH Company, an international leader in the field of gas, electrical water heaters and heating products.

Founded in 1886, by Robert Bosch in Stuttgart, Germany, the “Workshops for Precision Engineering and Electrical Engineering,” established their first subsidiary in 1906 in the US, and opened their first office in Montreal, Canada in 1954.

The Bosch Thermotechnick Company has several popular brands such as Bosch, Buderus, and Junkers.

Bosch has been manufacturing tankless water heaters for more than 60 years, and is synonymous for their low NOx and CO2 gases, helping the environment.


Energy efficient – Bosch is dedicated to reducing energy consumption with the help of its products. That’s why most Bosch water heaters have Energy Star and EnerGuide labels. These products are certified to reduce greenhouse gas emissions as well as protect the environment.

Using very small amount of natural gas, propane, and electricity, Bosch units release less NOx and carbon dioxide in the environment and because of their better technology, they lower the costs of operation even when used for long time durations. Because of so many wonderful energy saving methods, Bosch customers can even get tax credits.

Lightweight water tanks – Bosch water heating appliances come with mini tanks that are small and lightweight. Because of their size, these units do not take up floor space and can be easily and quickly installed on wall surfaces or under your sink, allowing you to hide them from plain sight.


While Bosch water heaters are known for several technological advancements, here’s a quick list of some of the best features of their water heaters.

1.    Bosch makes only tankless hot water heaters – both gas and electric.
2.    Bosch water heaters are eco-friendly and energy efficient.
3.    Bosch’s appliances are made from materials that can be reused and recycled.
4.    All of Bosch products have an average life of over 20 years.
5.    Water heaters manufactured by Bosch waste less water and produce less CO2.
6.    Using Bosch units, almost 90% energy can be saved.


Bosch has three categories of water heaters depending on the technology, fuel, and size of the appliance. These types are:

Gas water heaters

  • AquaStar models – thermal efficiency of 80-87%; energy factor 0.69-0.86.

Electric water heaters

  • PowerStar models – whole house tankless water heaters that work as a traditional storage tank system.

Point of use or instant water heaters

  • Ariston models – small sized units available as mini-storage tanks or small tankless models.


Bosch AE125 PowerStar 4 GPM Indoor Electric Tankless Water Heater

Market Price: $791.00; Price: $699.00 on (FREE shipping)
Energy Efficiency: 94%

1.    Electric tankless water heater suitable where groundwater temp is less than 60oF
2.    Can supply 4 gallons hot water/minute
3.    Comes with copper plated heat exchanger
4.    Available with a single water heater
5.    Heat exchanger comes with 10-year limited warranty; parts come with 1-year warranty
6.    Size: 15-1/2 X 15-1/4 X 4-1/2 inches; Weight: 22 pounds

Bosch AE125 PowerStar tankless electric water heaters are best for homes that require constant and uninterrupted supply of hot water.

Bosch AquaStar 4.3 GPM Gas Tankless Water Heater

Market Price: $829.83; Check out price on
Energy Efficiency: 80%

1.    All parts are recyclable and made from solid plastic and high quality copper.
2.    Water heater body constructed with stainless steel and strong aluminum.
3.    Comes with “Pilot Light Ignition System”
4.    Casing coated with ‘baked on epoxy’ for longer life of the water heater
5.    Size: 36-3/4 X 18-1/4′ X 10-1/2 inches


Since Bosch specializes in tankless water heaters for homes, it offers water heaters in different price ranges. Here’s a quick look:

  1. Ariston mini tank (point of use): $150 to $250
  2. PowerStar point-of-use: $190 to $300
  3. PowerStar whole house water heater: $450 to $750
  4. AquaStar gas tankless water heater: $350 to $1100

However, for exact pricing its best to contact your local Bosch dealer or visit Lowe’s or

If these units don’t fit your budget you can even buy refurbished water heaters as these units come with the same warranty terms as the brand new models.

All authorized product distributors for Bosch’s reconditions appliances sell these units.

Bosch tankless water heaters are known for their long-life, environmental friendly performance, and super energy efficiency.

So if you care about your environment, Bosch is the one for you!

You can purchase products directly from the BOSCH website, or from other online retailers.

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