Patent ID: 7671964

Claim:
An exposure apparatus for exposing a substrate to light via a reticle, the apparatus comprising: a chamber in which the substrate is exposed to light via the reticle; an adjusting mechanism configured to circulate a gas through the chamber to adjust a temperature of a gas inside the chamber; a cooling device configured to cool first water supplied from a factory facility by use of second water supplied from the factory facility, a temperature of the second water to be supplied from the factory facility being lower than a temperature of the first water to be supplied from the factory facility; a first supply path configured to supply the first water from the factory facility to the cooling device; a second supply path configured to supply the second water from the factory facility to the cooling device; and a third supply path configured to supply the first water cooled by the cooling device from the cooling device to a heat source inside the chamber, and configured so that the first water in the third supply path exchanges heat with a gas discharged from the chamber by the adjusting mechanism, to cool the discharged gas, the cooled gas being supplied to the chamber by the adjusting mechanism.