Albert Einstein did not invent the gas absorption heat pump. This technology was developed by other engineers and scientists around the time of Einstein’s research in the early 20th century. The concept of absorption refrigeration can be traced back to the 1850s, with notable contributions from inventors like Ferdinand Carré and others who improved upon the technology over the years.
Einstein is most famously known for his contributions to theoretical physics, particularly the theory of relativity, rather than for inventions in the field of thermodynamics or heat pumps. While his work has greatly influenced many scientific fields, the gas absorption heat pump itself was not one of his inventions.