A fire sprinkler or sprinkler head is the component of a
fire sprinkler system that discharges water when the effects of a fire
have been detected, such as when a predetermined temperature has been
exceeded. Fire sprinklers are extensively used worldwide, with over 40
million sprinkler heads fitted each year.
Sprinklers are installed by specially trained contractors who follow
NFPA codes and standards and other local requirements. The best time to
install sprinklers is when you are building a new home or remodeling an
existing home.