DESIGN + BUILD + SERVICE

We are a turn-key operation offering fully licensed engineering;
fully certified and experienced build, install, service and repair; and an 'one-stop-shop' supplying all mechanical needs.

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HEATING

SUPPLY

FABRICATION

SERVICE

Monorail Carts

Rolling Container
Hand Railings

Expansion Tanks

Plasma Table Services

Gas Lines

Propane Lines

Oil Lines

Burner Service

Boiler Maintenance

Tube Replacement

 We are a family owned and operated business, located in the Niagara region.

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ABOUT US

Langendoen Mechanical Inc. (LMI), which started in 1978 as Andy Langendoen Greenhouse Mechanical, is a family-owned and operated mechanical contractor located in the Niagara Region. What had started as a small greenhouse mechanical company focused on the service and maintenance of pumps, pipes and boilers, has grown into a full service company (turn-key) including design, service, supply and install.

FULLY CERTIFIED: High Pressure Welder; Gasfitter; Oil Burner Technician; Steamfitter; Boiler TSSA Certification

Jobsite Gallery

F&H Crone Boilers
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F&H Crone Boiler
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750k Litre Hot Water Storage Tank
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350k Litre Hot Water Storage Tank
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3M Litre Hot Water Storage Tank
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Header Set
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BoilerSmith Steam Boilers
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In-floor Heat Installation
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“Fully certified to provide and maintain a high level of
knowledge, experience and quality in their work.”