IRSAP was founded in 1963 in Arquà Polesine in the Province of Rovigo. The company began its activity with the production of radiators in pressed steel. In 1996, IRSAP entered the air-conditioning sector with the proposal of a complete range of products. This was the birth of designer air conditioning: CLIMARREDATORI. In order to further consolidate its presence in the air-conditioning market, IRSAP purchased Rhoss, a historic company in Italy's Friuli region in 2000.