CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY
Insulated hot water tank. The main water tank and the secondary tank (top) are both wrapped in insulation (red) to reduce heat loss and allowe hot water to be stored until needed. The water is heated by electricity (wires at bottom), and the tanks are located in the roof space of a house.
Model release not required. Property release not required.