Someone comes to your house selling a device that draws heat from groundwater and supplies that heat to your house. The salesperson claims that the amount of heat energy entering the house will far exceed the electrical energy supplied to the device. What the salesperson claims here is physically impossible.

Question

Quizplus · Accepted Answer

The salesperson is describing a heat pump, which can indeed transfer more heat energy into a house than the electrical energy it consumes by using the refrigeration cycle to move heat from a cooler area (groundwater) to a warmer area (the house).

Someone Comes to Your House Selling a Device That Draws