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MRJ Mechanical, are pleased to offer you the highest quality of service for all your heating, air conditioning and air quality products.

Our technicians are fully trained, licensed and qualified to service and install all types of heating, air-conditioning, ventilation and refrigeration equipment. MRJ Mechanical provides a wide range of HVAC services for residential and commercial properties. If you don't see what you are looking for here, contact us. We will be happy to answer your questions.

Looking for a maintenance plan? We can customize a cost-effective HVAC maintenance program for your residence or building that will assure tenant satisfaction, longer equipment life, and help reduce energy consumption.

To avoid those off-hour emergency calls, talk to an MRJ Mechanical representative to set up a maintenance Plan.

The only company you'll ever need to satisfy your air conditioning and heating needs!


Technician is checking air conditioner

We take pride in our excellent service and workmanship.

MRJ Mechanical Incorporated is a TSSA Certified company providing service, repair, and installation in both residential and commercial heating, cooling, and refrigeration. We are a family owned and operated business serving the Tri-City area and have over 40 years combined experience in the HVAC industry.

Our fully licensed and trained technicians are distinguished by their functional and technical expertise. Our hands on experience ensures, you our customer, receives the most effective and professional service. Customer comfort and satisfaction are our guarantee.

For all your heating and cooling needs, residential and commercial Industrial please do not hesitate to call MRJ Mechanical Inc.

Servicing the Cambridge, Kitchener-Waterloo Guelph & Surrounding Area for over 20 years!

Satisfied customers, have a say!

We use only the BEST BRANDS in the industry!