Manufacturing of other heating system products, including wall and baseboard heating units, boilers, expansion tanks, mechanical stokers, nonelectric prefabricated metal fireplaces, electric swimming pool heaters, direct-fired water heater tanks, oil and

Facility	City	State	Employees	Status
Ergoseal, INC	Carol Stream	IL	—	● ACTIVE
Fcx Systems INC	Morgantown	WV	—	● ACTIVE
Fmi Chemical, INC	Bloomfield	CT	—	● ACTIVE
Greene Tweed & CO INC	Kulpsville	PA	—	● ACTIVE
Greene, Tweed & Co., LLC	Houston	TX	—	● 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
Jbc Technologies, INC.	North Ridgeville	OH	—	● ACTIVE
Josephson Manufacturing Company	Fort Dodge	IA	—	● ACTIVE
Kanomax Fmt, INC	White Bear Lake	MN	—	● ACTIVE
KIKenneth Industrial Products, INC.	Durham	CT	1–19	● ACTIVE
Klinger Igi INC	Wilsonville	OR	20–99	● ACTIVE
K&s Enterprises, LLC	Adelanto	CA	—	● ACTIVE
Ldj Manufacturing, INC.	Pella	IA	—	● ACTIVE
MSMagnetic Seal LLC	Warren	RI	20–99	● ACTIVE
MSMamac Systems, INC.	Chanhassen	MN	20–99	● ACTIVE
Melco Steel INC	Azusa	CA	—	● ACTIVE
Mercer Rubber Company	Bellmawr	NJ	20–99	● ACTIVE
Messersmith Manufacturing, INC.	Bark River	MI	—	● ACTIVE
Neptech, INC.	Highland	MI	—	● ACTIVE
New Buck CORP	Spruce Pine	NC	—	● ACTIVE

FactoryRegistry lists 1,087 facilities whose primary industry classification is one of the 2 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced other heating system products, including wall and baseboard heating units, boilers, expansion tanks, mechanical stokers, nonelectric prefabricated metal fireplaces, electric swimming pool heaters, direct-fired water heater tanks, oil and, 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.