Bosch Water Heaters
Review & Buying Tips
(updated 2017)

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Bosch water heater systems are well-known brand for its quality, reliable engineering, and tankless technology, in residential and commercial water heating applications. The hot water group is part of the superb heating system within Bosch Thermotechnik GmbH, a leading international manufacturer of gas and electric heating products. Check out the best of electric and gas condensing water heaters.

Review of Bosch water heaters

Bosch tankless water heaters, powered by natural or propane gas, are the most popular type for water heating, but the company also offers types and models that are very attractive to buy too; small and tankless electric models, point-of-use tank-type and gas boilers.


Best sellers

Bosch gas tankless water heaterBosch gas tankless

Bosch water heaters do not utilize the water storage tank, but are heating water on demand and providing hot water in endless and continuous supply. With the tankless design, there will be no more situations to run out of hot water even during the peak time when more than one fixture is in use for a long time.

Bosch water heaters with the tankless design are also small, saving your home space for other use, save energy and home budget as the heating takes place only when there is a call, and due to the ultra high efficiency (condensing models), have less impact on the environment.

There are two types of the Bosch tankless; Therm and Greentherm, which can further be divided into condensing and non-condensing or ultra-efficiency and high-efficient group, all built for the indoor and outdoor installation.

Best gas tankless models to buy

The best of Bosch water heaters are coming from the condensing group, and the good example is Bosch Therm C1210 ES - the most powerful, with the highest water flow and energy efficiency. This unit is not Energy Star rated as its designed power is over the maximum considered - 225,000 Btu. For the Energy Star compliance, the maximum power should be 199,000 Btu, which is found on the condensing unit
Bosch C1050 - the second largest unit.

Both models have high capacities - 12.1 vs. 10.5 GPM, and superior energy efficiency - 98% vs. 96%, and can link up to 24 units into one system, to supply even more of hot water. Therm C1210 ES is ASME rated, while Therm C1050 ES is not, but has an option to increase the output temperature to 184 F. The units are equipped with the automated and fully modulating bypass to provide the stable and accurate temperature of the outgoing hot water.

All the tankless water heaters come with the limited warranty of 15 years on the heat exchangers.

Residential electric models

Best sellers

Bosch WH17 electric water heaterBosch WH17

Bosch water heaters are also designed as electric, small tank, and tankless type, for point-of-use applications and the whole-house use, such as the tankless with the high power.

Bosch Tronic 3000 T is an example of the mini-tanks that are usually installed under or above the sink, or as an addition in the kitchen or bathroom, for fast hot water delivery. These are found in size range from 2.7 to 7 gallons.

There is also a tankless 3000 point-of-use group with models sizing from 3 to 12 kW and built for on-demand water heating and point of use service.

Larger models (more power and capacity) are designed only as tankless, such as the Bosch Tronic 5000C / 6000C series, and these operate with the power ranging from 17 to 36 kW and flow rate up to 5.4 GPM, making them ideal for homes with up to 3 bathrooms.

Best electric tankless models to buy

Bosch water heaters from Tronic 5000C / 6000C series are the most advanced and best electric models to buy as the power can modulate from its minimum to its maximum power, supplying just enough hot water for small or large water jobs, and with less sediment buildup, due to the new scale prevention technology.

Gas boilers

Bosch gas boilers are available as the Greenstar and Buderus condensing and Buderus conventional boilers, where the condensing models are recommended to buy due to its excellent efficiency, low operating costs, energy savings, lower pollution, and consistent comfort.

For the homeowners who prefer boilers over the water heaters, Greenstar boilers are good choice, due to many great advantages such as the compact size, condensing technology, flexible installation either on the wall or standing on the floor including cascade setup, combined space and potable water heating, superior efficiency and limited lifetime warranty on the heat exchanger. This group carries a reward of the most efficient in 2016.

About Bosch

  • In 1886, Robert Bosch founded the "Workshops for Precision Engineering and Electrical Engineering" in Stuttgart, Germany.
  • In 1906 Bosch had established its first US subsidiary, and the Canadian office was opened in Montreal, in 1954.
  • Bosch Thermotechnik includes popular brands like Bosch, Buderus, and Junkers. Bosch tankless water heaters have been made for over 60 years.

Bosch is a great company that has over 125 years experience in water heating, of which 25 years in high efficient condensing heating only. Their water heaters cover different applications and support various systems such as residential, commercial water heating, recirculation system and solar.

To contact Bosch, use the official website here, where you can also find more information about the warranty, products, and manuals. 

Related articles

Bosch gas tankless
Bosch Therm gas series
Bosch Tronic electric series
Bosch condensing
Best models

Bosch official site

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