Bosch reflects on 50 years of heat pump development
Robert Bosch GmbH traces its entry into heat pump technology to the 1970s energy crisis, when early prototypes and research projects laid the groundwork for its modern heating division.
The development of heat pump systems at Bosch accelerated during the 1970s, triggered by the global oil crisis. In 1975, the company introduced a water-to-water heat pump prototype at the ISH trade fair in Frankfurt, aiming to reduce dependence on fossil fuels by utilizing ambient energy.
Following the prototype launch, Bosch initiated the "Tritherm" project in 1976. This research house in Wernau combined heat pumps, solar collectors, and gas-fired heating to analyze energy efficiency and system integration. The insights gained from these hybrid models remain relevant today, as the company’s current portfolio focuses on retrofitting existing buildings with heat pump-hybrid solutions that pair with traditional boilers.
The long-term reliability of these early systems has been documented through individual field use, with some units remaining operational for over four decades. Today, Bosch Home Comfort Group leverages these historical foundations to advance climate-neutral heating technology for residential and commercial applications.