Installation, maintenance and repair of oil, gas, solid fuel and solar heating installations namely boilers, low-temperature boilers, gas gross calorific value equipment, gas wall thermal, heating circle pumps, gas and oil burners, solar collectors, water-warming appliances with computer memory hardware, instant water heaters, heat pumps, heat exchangers; ventilation installations; boiler repair; maintenance and installation of boilers and solar energy installations; and, advisory services related to all of the aforesaid

'advisori':66 'aforesaid':73 'applianc':40 'boiler':15,19,54,60 'burner':34 'calorif':22 'circl':29 'collector':36 'comput':42 'energi':63 'equip':24 'exchang':51 'fuel':9 'gas':7,20,25,31 'gross':21 'hardwar':44 'heat':12,28,48,50 'heater':47 'instal':1,13,53,58,64 'instant':45 'low':17 'low-temperatur':16 'mainten':2,56 'memori':43 'name':14 'oil':6,33 'pump':30,49 'relat':68 'repair':4,55 'servic':67 'solar':11,35,62 'solid':8 'temperatur':18 'thermal':27 'valu':23 'ventil':52 'wall':26 'warm':39 'water':38,46 'water-warm':37

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