Meet the Team

Marc Viau
President / Co-Owner

Marc derives his philosophy of customer service from his long experience in the HVAC industry. Marc followed his passion for sheet metal having majored four years in high school. Working into his apprenticeship in 1984, years later graduating from Algonquin College in 1988 with his red seal as a sheet metal journeyman. Marc’s leadership led him to further his education adding more qualifications to his resume. These include G2 gas license, oil burner and refrigeration. Marc spends workdays overseeing operations, estimator and mentoring the next generation. In his downtime, it’s hard to find him camouflaged in his hunting blind. But you can find him golfing, curling, camping, travelling, playing hockey and four wheeling.

Tammy Viau
Treasurer / Co-Owner

Tammy began her career in hairstyling when she worked both answering calls for Marc while managing her in home salon. Tammy soon chose one over the other allowing her to work the office from home while having the flexibility in raising three young children Daniel, Mathieu and Chloé. Now some years later she mentors Stacey in the company’s newest location. You will find Tammy nestled at her desk working away with day to day operations in finance, company structure and advertising. Tammy leads a busy and exciting lifestyle enjoying traveling, teaching yoga, sewing, camping, curling, golfing…YOGA-YOGA-YOGA.

Stacey Gingras
Office Manager

Stacey was born and raised in Cornwall. She began her business administration career in 2008 with us, training as a customer service representative. She quickly learned the importance of excellent customer service and has continued to provide it at a high level in all her day-to-day tasks. As our all-important frontline leading lady, she is the first person you see when you walk through the Marc Viau Mechanical doors and is able to help you with any questions and assist you through our process. Stacey has excelled at all the challenges the industry throws at her!


Mathieu Viau
Sheet Metal Journeyman, G2 Gas Tech,
Air Conditioning Tech

Son to Marc & Tammy, Mathieu was born in Cornwall and raised in Ingleside. Mathieu has been working at the shop since a young age. Eager to continue working on obtaining and broadening his knowledge in more than one trade. Mathieu has attended Hi-Mark occupational skills training center where he completed his G2 as well as his Air conditioning mechanic certificate. He completed his sheet metal schooling at Algonquin College in 2019 receiving his red seal. Mathieu strives on building a trusting rapport with existing & future customers. We think of Mathieu as the “furnace whisperer” He is your equipment specialist.

Corey Wert

G2 Gas Tech, Air Conditioning Apprentice

Corey was born in Cornwall and raised in Long Sault. He obtained his G2 license in 2008 while attending Hi-Mark occupational skills training center. Along his journey was the opportunity to complete his co-op with Marc Viau Mechanical which quickly resulted in a permanent addition to their family. Demonstrating a very meticulous approach to the way he services HVAC equipment, he has proven himself to be very “part”ticular. His ability to inspect the parts we receive allows for a smooth repair.

Roy Fields

Sheet Metal Journeyman

Roy was born and raised in Cornwall. A Very well-seasoned sheet metal journeyman since 1986. Joining the Marc Viau Mechanical team since 2017, Roy brings energy and spirit everywhere he goes! He will never back down from any challenge!