Abstract: There is provided an ammonia absorption type water chilling/heating device in which a generator 22 generating by use of heat source a high pressure ammonia gas 21 from an ammonia aqueous solution 11, a rectifier 28 performing the gas-liquid separation into the ammonia gas 21 and a dilute ammonia solution 9, a condenser 23 condensing the ammonia gas 21 after separation, an evaporator 24 utilizing the cooling action generated when vaporizing an ammonia solution 94 after condensation, and an absorber 25 making the ammonia gas 21 after vaporization to be absorbed in an ammonia aqueous solution are successively disposed from the top in the described order, so that the dilute ammonia solution 9 is transferred by gravitation; and in the central portions of these components, there is arranged a solution pipe 30 through which the ammonia aqueous solution 11 is compressively transferred from the absorber 25 to the generator 22.