Manufacturing of steel heating boilers (15 psi or less), and all other hot water heating boilers (excluding parts)

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
Hapco INC	Kent	OH	20–99	● ACTIVE
Heatron, INC	Leavenworth	KS	—	● ACTIVE
Hi-heat Industries, INC.	Lewistown	MT	—	● ACTIVE
Indeeco LLC	Saint Louis	MO	—	● ACTIVE
Josephson Manufacturing Company	Fort Dodge	IA	—	● ACTIVE
Ldj Manufacturing, INC.	Pella	IA	—	● ACTIVE
MSMamac Systems, INC.	Chanhassen	MN	20–99	● ACTIVE
Melco Steel INC	Azusa	CA	—	● ACTIVE
Messersmith Manufacturing, INC.	Bark River	MI	—	● ACTIVE
Neptech, INC.	Highland	MI	—	● ACTIVE
New Buck CORP	Spruce Pine	NC	—	● ACTIVE
O2 Cool Manufacturing LLC	Decatur	TX	20–99	● ACTIVE
Precision Control Systems INC	Eden Prairie	MN	—	● ACTIVE
Ramda Metal Specialties, INC.	Gardena	CA	—	● ACTIVE
Rock Energy Systems LLC	Janesville	WI	100–499	● ACTIVE
SSScully Signal Company	Wilmington	MA	—	● ACTIVE
TETayco Engineering, INC.	Cypress	CA	—	● ACTIVE
Tempco Electric Heater Corporation	Wood Dale	IL	—	● ACTIVE
TEThe Electric Heater CO	Stratford	CT	—	● ACTIVE
TPThermetic Products, INC.	Minneapolis	MN	—	● ACTIVE
Tri Fab Associates, INC	Fremont	CA	—	● ACTIVE
TLTutco, LLC	Cookeville	TN	—	● ACTIVE
UPUS Precision Sheet Metal, INC.	Riverside	CA	—	● ACTIVE
Watlow Electric Manufacturing CO	Saint Louis	MO	100–499	● ACTIVE
Accu-therm LLC	Saint Louis	MO	—	● ACTIVE
Associated Boiler Line Equipment Co., INC.	Milford	CT	—	● ACTIVE
Caliente LLC	Fort Wayne	IN	—	● ACTIVE
Chromalox INC	Pittsburgh	PA	—	● ACTIVE
Cosine CORP	Stanford	CA	—	● ACTIVE
Cowles Operating Company	North Haven	CT	—	● ACTIVE
DIDg Innovations, LLC	Lakeville	MN	—	● ACTIVE
Emergent Coils, LLC	Denver	CO	—	● ACTIVE
Endeavour Group, Inc., the	Salt Lake City	UT	—	● ACTIVE
Entherm INC	Burnsville	MN	—	● ACTIVE
Equipment Source, INC.	Fairbanks	AK	—	● ACTIVE
Faber Burner Company	Lock Haven	PA	—	● ACTIVE
Gld Company LLC	Delmont	PA	—	● ACTIVE
Harvest Thermal, INC.	Kensington	CA	—	● ACTIVE
Havtech Supply LLC	Columbia	MD	—	● ACTIVE
Heat Energy Systems Company, INC.	Springfield	TN	—	● ACTIVE
Heat Wagons INC	Valparaiso	IN	—	● ACTIVE
Honeywell International INC	Englewood	CO	—	● ACTIVE
Hotfoil - Ehs, INC.	Hamilton	NJ	—	● ACTIVE
Hotstart Sales, LLC	Spokane Valley	WA	—	● ACTIVE
IHIcebox Heat Pumps INC.	Petaluma	CA	—	● ACTIVE
Infinity Thermal CORP.	Charlton	MA	—	● ACTIVE
IAInstruments and Controls, INC.	Westminster	MD	—	● ACTIVE
International Thermal Research INC.	Vancouver	WA	—	● ACTIVE
Mf Fire INC	Baltimore	MD	—	● ACTIVE
Midwest Radiant Heaters, LLC	Omaha	NE	—	● ACTIVE
Mitchtech LLC	Carrollton	TX	—	● ACTIVE
Power Plus International, INC.	Mcdonough	GA	—	● ACTIVE
RBRio Bravo I INC.	Saint Augustine	FL	—	● ACTIVE
SWSchmitt Walter H & Associates INC	West Newton	PA	—	● ACTIVE
Smoky Mountain Emporium INC	Taylorsville	NC	—	● ACTIVE
Solarset INC	Center	CO	—	● ACTIVE
Spacecell LLC	Elk Grove	CA	—	● ACTIVE
Suncatch LTD.	Evergreen	CO	—	● ACTIVE
Sundrum Solar LLC	Hudson	MA	—	● ACTIVE
Templeton Coal CO INC	Terre Haute	IN	—	● ACTIVE
TETotem Equipment and Supply, INC.	Anchorage	AK	—	● ACTIVE
Touchstone Home Products, INC.	Exton	PA	—	● ACTIVE
Tru-flow Systems, INC.	Magna	UT	—	● ACTIVE
Valad Electric Heating CORP.	Montgomery	NY	—	● ACTIVE
Vulcan Electric CO	Porter	ME	—	● ACTIVE
Willow Springs S.r.a. LLC	Wittenberg	WI	—	● ACTIVE
CBCentral Boiler, INC	Greenbush	MN	100–499	◐ LIKELY ACTIVE
HAHearth and Home Technologies INC	Mount Pleasant	IA	100–499	◐ LIKELY ACTIVE
MEMarley Engineered Products	Bennettsville	SC	100–499	◐ LIKELY ACTIVE
Modine Manufacturing CO	Buena Vista	VA	100–499	◐ LIKELY ACTIVE
TEThermally Engineered Manufactured Products, INC	Gardena	CA	—	◐ LIKELY ACTIVE
Trans Fx, INC.	Oxnard	CA	—	◐ LIKELY ACTIVE
UBUS Boiler INC	Lancaster	PA	100–499	◐ LIKELY ACTIVE
Wisconsin Oven CORP	East Troy	WI	—	◐ LIKELY ACTIVE
BCBriskheat Corporation	Columbus	OH	—	◐ LIKELY 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 steel heating boilers (15 psi or less), and all other hot water heating boilers (excluding parts), 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.