Manufacturing of gas-fired unit heaters, 400,000 Btu per hour or less

Facility	City	State	Employees	Status
Aldrico, INC.	Wyoming	IL	20–99	● ACTIVE
Borga Steel Buildings & Components INC	Fowler	CA	—	● ACTIVE
Chromalox, INC.	La Vergne	TN	100–499	● ACTIVE
Crown Technical Systems	Fontana	CA	100–499	● ACTIVE
DIDurex International CORP.	Cary	IL	100–499	● ACTIVE
MIMestek INC	Westfield	MA	100–499	● ACTIVE
Ogi Process Equipment, INC.	Sand Springs	OK	20–99	● ACTIVE
Preferred Utilities Manufacturing Corporation	Danbury	CT	100–499	● ACTIVE
Premier Furnace Specialists INC	Farmington Hills	MI	20–99	● ACTIVE
Ravenswood Studio INC	Lincolnwood	IL	100–499	● ACTIVE
Super Radiator Coils Limited Partnership	Richmond	VA	—	● ACTIVE
The Mellen CO INC	Concord	NH	1–19	● ACTIVE
Ace Heaters LLC	Corona	CA	—	● ACTIVE
Advanced Cooling Technoglies INC	York	PA	20–99	● ACTIVE
Alternate Energy Technologies, L.l.c.	Green Cove Springs	FL	—	● ACTIVE
ATAmerimade Technology, INC.	Livermore	CA	—	● ACTIVE
Barnes & Jones, LLC	Randolph	MA	—	● ACTIVE
Cambridge Engineering, INC.	Chesterfield	MO	—	● ACTIVE
Chromalox INC	Ogden	UT	—	● ACTIVE
Compucraft Industries, INC	Santee	CA	—	● ACTIVE
Compumeric Engineering, INC.	Ontario	CA	—	● ACTIVE
Energy Reconnaissance INC	Anaheim	CA	—	● ACTIVE
Fcx Systems INC	Morgantown	WV	—	● ACTIVE
GMGreentech Manufacturing, INC	International Falls	MN	20–99	● ACTIVE
Hale Industries, INC	Fortville	IN	1–19	● ACTIVE

FactoryRegistry lists 542 facilities whose primary industry classification is one of the 1 industry above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced gas-fired unit heaters, 400,000 Btu per hour or less, in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.

The U.S. Census Bureau recorded this product line in 1 US manufacturing industry in the 2022 Economic Census, as the most specific line that industry reported, where 37 establishments reported producing it.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

NAPCS collection code 2038625006. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.