Apparatus for heating air; refrigerating appliances and machines; ventilating fans for commercial and industrial use; air conditioning apparatus; heat pumps; heat exchangers other than parts of machines; parts and components of installations and apparatus for heating, refrigerating, ventilating, air conditioning, heat pumps and energy recovery, namely, structural and electrical parts and fittings for HVAC and refrigeration installations

'air':4,16,39 'apparatus':1,18,34 'applianc':6 'commerci':12 'compon':30 'condit':17,40 'electr':49 'energi':44 'exchang':22 'fan':10 'fit':52 'heat':3,19,21,36,41 'hvac':54 'industri':14 'instal':32,57 'machin':8,27 'name':46 'part':25,28,50 'pump':20,42 'recoveri':45 'refriger':5,37,56 'structur':47 'use':15 'ventil':9,38

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