Now all the rage in the 2020s, versatile heat pump technology has a history spanning over 250 years, evolving from early scientific experiments to modern energy-efficient heating systems.

The initial concept of heat transfer and refrigeration dates back to 1748 when William Cullen first demonstrated artificial refrigeration. In 1852, Lord Kelvin formalized the thermodynamic principles that describe how heat can be moved from one place to another. These early experiments laid the groundwork for practical heat pump systems.

Here, we follow that historic path to modern day. Answer just five questions for a chance to win a $25 Amazon Gift Card.Click below to take our short quiz...