3585  Air-Conditioning & Warm Air Heating Equipment & Commercial &
Industrial Refrigeration Equipment

Establishments primarily engaged in manufacturing refrigeration equipment
and systems and similar equipment for commercial and industrial use;
complete air-conditioning units for domestic, commercial, and industrial
use; and warm air furnaces. Establishments primarily engaged in
manufacturing soda fountains and beer dispensing equipment and humidifiers
and dehumidifiers, except portable, are also classified in this industry.
Establishments primarily engaged in manufacturing household refrigerators
and home and farm freezers are classified in industry 3632, and those
manufacturing electric airspace heaters and portable humidifiers and
dehumidifiers are classified in industry 3634.