> I’ve always wondered why heat pumps don’t also have a water line attached Some have, some don't. Heat pump is just a vapor compression cycle with a reversing

> I’ve always wondered why heat pumps don’t also have a water line attached Some have, some don't. Heat pump is just a vapor compression cycle with a reversing valve. Having water/dry air/moist air/air with water mist/ground/sewage as a heat source or sink is a matter of design and application.