Mission Statement :
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Main Air Systems Inc. becomes Smith and Long Mechanical Limited

In a concerted effort to enrich our relationships with our clients, we are proud to announce that we now offer a broader spectrum of services and capabilities. Main Air Systems brings 20+ years of HVAC experience to Smith and Long's 85+ years of Electrical experience for a combined total of over 100 years of servicing customers with a responsive attitude and multidisciplinary expertise. We are now a single source provider for all of your technical service needs.

Smith and Long provides leading edge services by developing and supporting the most innovative, comprehensive and custom tailored solutions for our clients' operations.

"We are very excited to have two great teams working together to better serve all of our customers" commented Robert Riopelle, current President.  "With many new resources available, the new Smith and Long Mechanical will be able to better serve all of our existing customers" commented Gord Wallace, VP Mechanical.

All phone numbers and contact info will remain the same with an updated mailing address of:

115 Idema Road
Markham ON L3R 1A9

The main line will stay the same at: 905.670.7015

For any questions please contact Deborah MacNeil: dmacneil@mainair.com

Service Offering:

Proactive Maintenance
New Construction
Generator Install/Maintenance
UPS Install/Maintenance
Life Safety Systems
Battery Installations
Design/Build (Electrical and HVAC)
Fiber Optics
Computerized Lighting Systems
Electrical and HVAC Modification and Upgrade
Engineering Services
Testing and Commissioning
High Voltage
Data and Voice Cabling
Building Automation Systems
Installation and Repairs of Refrigeration Equipment
Exhaust Fans
Unit Heaters
Ductwork Design, Installation and Modifications

Cooling Towers
Make Up Air Units
Energy Management
24 Hour Emergency Service
Single-Line Drawings
Diesel Testing
Fire Alarm and Security Systems
Lighting Retrofits
Arc Flash Studies
Programmable Logic Controllers
Substation Install/Maintenance
HVAC Installation and Service
Custom Bus Fabrication
Temporary Power
Custom Ventilation
Fume Hoods
Custom Exhaust Systems

 Why Work for Smith and Long Mechanical :
"Great place to work and great people to work for."

“This is an excellent company and I feel very proud to work here and be a part of it.”

"I feel privileged to work for a company that sets such a high standard of excellence both in its workforce and in its customer satisfaction.”

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