Verified Nov 2026
Metal Fabrication
·
Burr Ridge, Illinois
·
Since 1881
Weil-McLain designs and manufactures hydronic heating systems, including high-efficiency boilers, heat pumps, and hybrid systems. The company was founded in 1881 and is headquartered in Burr Ridge, Illinois, United States. It employs roughly 200 to 500 people and has an estimated annual revenue of $100 million to $250 million. It is privately held and serves residential, commercial, and institutional heating markets. In 2025 it introduced an air-to-water heat pump, the ECO HP, which expands its product line beyond boilers.
Weil-McLain at a glance
Revenue
$100-250M
Est. band
Employees
200-500
Founded
1881
Headquarters
Burr Ridge, Illinois
Import activity
1998
Industries
Automotive
Construction
Military & Defense
Renewable Energy
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
1998
Named foreign suppliers
50
Top origins
Italy · Belgium · Netherlands · Germany
Shared foreign counterparties do not establish that these companies buy from Weil-McLain.
What this tells a buyer
No customs or trade shipment data is available for the company, and its most recent public development is the 2026 update to its high-efficiency condensing boiler lineup, including the ECO Tec and Evergreen Pro models.
The company's offerings include residential and commercial boilers, heat pumps, hybrid systems, indirect-fired water heaters, and hydronic baseboards, with products that use aluminum and steel components.
The ECO Hybrid System was named product of the year by Plumbing & Mechanical in January 2026, and the company is reported to operate facilities in Michigan City, Indiana, among other locations.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
Overview
Weil-McLain designs and manufactures hydronic heating systems, including high-efficiency boilers, heat pumps, and hybrid systems. The company was founded in 1881 and is headquartered in Burr Ridge, Illinois, United States. It employs roughly 200 to 500 people and has an estimated annual revenue of $100 million to $250 million. It is privately held and serves residential, commercial, and institutional heating markets. In 2025 it introduced an air-to-water heat pump, the ECO HP, which expands its product line beyond boilers.
At a glance
Attribute | Detail |
|---|---|
Founded | 1881 |
Headquarters | Burr Ridge, Illinois |
Employees | 200-500 |
Revenue | $100-250M (estimated) |
Primary capability | Metal Fabrication |
What Weil-McLain makes
The company's offerings include residential and commercial boilers, heat pumps, hybrid systems, indirect-fired water heaters, and hydronic baseboards, with products that use aluminum and steel components.
Products and capabilities described on the company's own site include Emissions, Pump, Aluminum, Steel (source: weil-mclain.com).
Trade and customs footprint
No customs or trade shipment data is available for the company, and its most recent public development is the 2026 update to its high-efficiency condensing boiler lineup, including the ECO Tec and Evergreen Pro models. US customs bill-of-lading records list 1998 inbound shipments across 50 foreign suppliers, with top origins including Italy · Belgium · Netherlands · Germany.
Latest developments
2026-09-30 — Weil-McLain Enhances High-Efficiency Condensing Boiler Lineup with ECO Tec and Evergreen Pro Updates - Weil-McLain (weil-mclain.com)
2026-01-09 — ECO® Hybrid System Named #1 Product of the Year by Plumbing & Mechanical - Weil-McLain (weil-mclain.com)
2025-09-17 — Introducing B100 Compatibility for Residential Oil Boilers - Weil-McLain (weil-mclain.com)
2025-02-21 — Introducing ECO™ HP Air-to-Water Heat Pump | Weil-McLain (weil-mclain.com)
Facilities
Weil-McLain is headquartered in Burr Ridge, Illinois. Public sources also reference these locations:
Michigan City, Indiana — weil-mclain.com
Company details
The ECO Hybrid System was named product of the year by Plumbing & Mechanical in January 2026, and the company is reported to operate facilities in Michigan City, Indiana, among other locations. Weil-McLain was founded in 1881, has an estimated 200-500 employees, and is headquartered in Burr Ridge, Illinois.
Frequently asked questions
What does Weil-McLain make?
Weil-McLain designs and manufactures hydronic heating systems, including high-efficiency boilers, heat pumps, and hybrid systems. The company was founded in 1881 and is headquartered in Burr Ridge, Illinois, United States. It employs roughly 200 to 500 people and has an estimated annual revenue of $100 million to $250 million. It is privately held and serves residential, commercial, and institutional heating markets. In 2025 it introduced an air-to-water heat pump, the ECO HP, which expands its product line beyond boilers.
Where is Weil-McLain headquartered?
Weil-McLain is headquartered in Burr Ridge, Illinois (999 McClintock Drive, Burr Ridge, Illinois, 60527).
When was Weil-McLain founded?
Weil-McLain was founded in 1881.
How big is Weil-McLain?
Weil-McLain has an estimated 200-500 employees, with revenue in the $100-250M range (estimated).
Does Weil-McLain import from overseas suppliers?
US customs bill-of-lading records show 1998 inbound shipments for Weil-McLain, with top origins including Italy · Belgium · Netherlands · Germany.
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Last verified Nov 2026. Is this your company? Request a correction.
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