SIG Mechanical Services limited is an engineering firm carrying a certificate of authorization from the Association of Professional Engineers of Ontario. The accumulated experience of our construction and service departments is available to our design department resulting in very functional designs and accurate budget. The list of projects engineered by SIG is very long and diversified. In addition to hundreds of HVAC systems designed by the engineering staff of SIG, we have the experience and expertise to design special projects like dust and fume collection systems in foundries, competitive designs for clean rooms for the pharmaceutical and food industry, process heating and cooling, food drying, environmentally controlled chambers, particulate control and capturing systems for special needs.

If you can imagine it, we can design and build it. From the simplest units to the most complex systems, our units are specifically designed to meet the exact needs of each project. Our team of highly skilled engineers has built a reputation for their ability to repeatedly provide solutions for the industry's most demanding applications.


S.I.G. Mechanical Services Limited, has over 25 years experience in the Construction and Installation of Mechanical and HVAC related systems. Serving the Industrial and Commercial sectors, here are some of the Construction services we provide.

Building Automation & Energy Efficient Control
Building System Upgrades
Complete Building Retrofits
Computer Rooms
Custom Built Heating & Cooling Systems for
Special Process
Custom Built Hoods for Dust & Smoke
Electric to Gas Conversions
Equipment Relocation
Industrial Ventilation Systems - Make Up Air & Special Exhaust Systems
New Installations
Pharmaceutical Clean Rooms
Process Control Systems
Tenant Retrofits

" We have a commitment to provide you with a cost effective, trouble free, energy efficient installation, on time and within your budget. No matter what your construction requirements may be, we have the expertise and know how to get the job done right. "
   Construction Manager

Engineering Tools

The following is a list of useful engineering tools.

Service and Maintenance.

S.I.G. Mechanical Services Limited offers complete building mechanical services for today's commercial, industrial, and institutional market. Our highly trained field technicians provide our company with unparalleled service expertise on the following systems:

Heating: Gas, oil, electric, heat recovery, make-up air, hydronic systems, and forced air systems.
Cooling: Unitary air conditioning, self contained, packaged, split, air-cooled chillers, water-cooled chillers, steam fired absorption chiller, and direct fired absorption.
Specialty: Industrial and process systems, pneumatic control systems, VAV systems, DDC control systems, PLC control systems, water treatment, duct cleaning, industrial ventilation, CO monitor and exhaust systems and computer rooms.

Standard Contracts Include:

All inclusive maintenance.
Emergency service with guaranteed response time.
Multi-year system upgrade maintenance programs.
Preventative maintenance.
Service Contract Agreements
TSSA Certificate of Authorization