WE OFFER MORE THAN JUST WATER HEATINGOUR PRODUCTS NEWS About us HAKLproduction – sales – service ENERGY EFFICIENCY CLASSES Energy labels have been mandatory on household appliances in Slovakia since May 2002. TÜV ISO 9001 Quality Management System. CONTACT 02 / 4594 4469+421 910 923 196 hakl@hakl.skobchod@hakl.sk