... Control Service: Repair, installation, maintenance, and sale of split, cassette, ducted, reversible heat-cool pumps, and multisplit air conditioners. Gas, diesel, electric, and biomass boilers. Appliance repair: stoves, ovens, hoods, extractors, refrigerators, freezers, coolers, chests, washing machines, dryers, and dishwashers. Hospitality: Technical SAT repair service for all types of hospitality machinery and periodic maintenance. Industrial cooling: refrigeration plants, cold storage rooms, refrigeration equipment, and industrial cooling. Electricity certificates.