ABOUT: A device that allows you to heat any size pool with a garden hose. DESCRIPTION: The Little Pool Heater that makes a Whale of a Difference GENERAL ONFORMATION: If you’ve ever felt the water coming out of a garden hose that’s been laying in the sun, you know how warm it can get. This Solar Pool Heating Device uses the same idea to channel heat from the sun into your pool… keeping it comfortable for an extended season at no extra cost.