This U.S. industry comprises establishments primarily engaged in repairing and servicing household appliances without retailing new appliances, such as refrigerators, stoves, washing machines, clothes dryers, and room air-conditioners. Cross-References. Establishments primarily engaged in-- ? Installing central heating and air-conditioning equipment--are classified in Industry 238220, Plumbing, Heating, and Air-Conditioning Contractors; ? Repairing commercial refrigeration equipment--are classified in Industry 811310, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance; and ? Retailing an array of new appliances and also providing repair services--are classified in U.S. Industry 443111, Household Appliance Stores.