The risk of dying in fires in nursing homes is six times the risk of dying in fires at home in Sweden. One way to reduce this risk is to install fire sprinklers. This study measures the benefits using value of full lives, life years and quality adjusted life years (QALYs) for deaths and injuries. The results show that sprinklers are cost-effective in newly built nursing homes no matter what value of life is used. However, if sprinklers are installed in already existing buildings, they are cost-effective only if the value of a statistical life is used.