Automatic Environmental Control Manufacturing for Residential, Commercial, & Appliance Use

Code 334512 covers establishments manufacturing automatic controls and regulators specifically for heating, air-conditioning, refrigeration, and appliance applications. The key distinction from 334513 is that 334513 manufactures instruments for measuring and displaying industrial process variables across diverse manufacturing settings, whereas 334512 focuses narrowly on environmental control devices for residential and commercial climate systems plus appliances. Code 334519 captures measuring and controlling devices outside these defined categories, such as aircraft engine instruments and meteorological equipment.