Installation of industrial furnaces; Installation and repair of furnaces; Installation and repair of laundry washing machines; Installation of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Installation, repair and maintenance of heating equipment; HVAC contractor services; Installation, maintenance and repair of temperature control apparatus; Repair or maintenance of industrial dish washing machines; Repair or maintenance of industrial washing machines; Installation, maintenance and repair of air filters; Installation, maintenance and repair of heating systems; Refrigerator repair services; Repair or maintenance of industrial furnaces; Repair and maintenance of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Installation, maintenance and repair of refrigerating apparatus; Installation of HVAC systems; Installation of heating and cooling apparatus; Installation, maintenance and repair of gas supply apparatus; Repair of air conditioners; Installation, maintenance and repair of cooling and air-conditioning systems for temperature-controlled environments