We are your ‘go to’ multi-trade contractor, providing Plumbing, HVAC/R and Electrical services to our Institutional, Commercial and Industrial customers. Our team of professionally licensed tradespeople bring decades of technical expertise and craftsmanship to our work. On all of our projects, large and small, we are committed to providing a safe and healthy work environment for our employees, and those who work with and for us. Health and safety is paramount to everything we do.

Our construction teams can be seen at large job sites across southern Ontario, working on a variety of projects ranging from schools and universities, hospitals, wineries, and sporting facilities, just to name a few. For our gallery of featured projects, click here.

Working directly with building owners and property managers, our integrated service team handles all small projects including repairs, maintenance and 24/7 emergency service.


We have the expertise needed to provide tailored solutions for your facility and ensure your heating and cooling equipment is properly installed, serviced and maintained.

Whether you require a preventative maintenance program to extend the life-cycle of your equipment, an energy retrofit, an infrastructure replacement or an emergency service call to restore critical and/or climate controlled operational processes, we’ll minimize down time, maximize efficiencies and let you get back to business.


L.J. Barton Mechanical has been installing full plumbing systems for over three decades. Our TSSA certified pipefitters and welders specialize in the layout and installation of process piping, steam piping, compressed air and hydronic heating systems.

If it’s pipework, for any application or pressure, installed or repaired, you can trust us to get the job done right. Our comprehensive backflow prevention program, including surveys and testing, ensures your facility continues to function properly, and is compliant with local codes and bylaws.


Our electrical team is ready to meet all your lighting and electrical needs, whether it’s a new construction or renovation project. We offer a full range of electrical services, from energy evaluations to voltage stabilization to complete lighting upgrades.

We also handle all electrical requirements for mechanical equipment installations, including power feeds, inner connections and VFDs. Our service and preventative maintenance programs will ensure your existing electrical system is always functioning efficiently and ESA compliant.