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





HEATING
SUPPLY
FABRICATION
SERVICE
Boilers & Condensors
Storage Tanks
Pipe Insulation / Jacketing
We are a family owned and operated business, located in the Niagara region.

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.
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FULLY CERTIFIED: High Pressure Welder; Gasfitter; Oil Burner Technician; Steamfitter; Boiler TSSA Certification
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“Fully certified to provide and maintain a high level of
knowledge, experience and quality in their work.”