Establishments primarily engaged in the wholesale distribution of warm air heating and air-conditioning equipment and supplies. Construction contractors primarily engaged in installing warm air heating and air-conditioning equipment are classified in Construction, Industry 1711.
- Air pollution control equipment and supplies-wholesale
- Air-conditioning equipment, except room units-wholesale
- Automotive air-conditioners-wholesale
- Compressors, air-conditioning-wholesale
- Condensing units, air-conditioning-wholesale
- Dust collection equipment-wholesale
- Furnaces, heating: electric-wholesale
- Furnaces, warm air-wholesale
- Humidifiers and dehumidifiers, except portable-wholesale
- Ventilating equipment and supplies-wholesale
- Warm air heating and cooling equipment-wholesale