Question

Which best describes why heat pumps are reversible?

O They can heat and cool an indoor space.
O They involve a metal expanding or contracting against another.
They combust and can also add coolant.
They allow a piston to move up and down.

Answer 1

A

Step-by-step explanation:

Answer 2

I would say the first one.

A: They can heat and cool an indoor space.

Step-by-step explanation:

Reversible heat pumps are capable of providing both heating and cooling processes using the same two environments. When heating, they use the external pipes to absorb heat and release that heat into the indoor environment. When cooling, they absorb the heat from indoors and release that heat into the outside environment.