Technical Trades Services & Facility Management in Markham, ON

GDI Ainsworth delivers trusted facility maintenance and technical services across Markham and the Greater Toronto Area.

Comprehensive Facility Maintenance in Markham

From Unionville and Milliken Mills to Buttonville, Greensborough, and Downtown Markham, our technicians support office complexes, healthcare facilities, manufacturing sites, and public institutions.
We maintain advanced systems across Markham Stouffville Hospital, IBM Canada Headquarters, and key commercial corridors like Highway 7 and Woodbine Avenue, with an integrated model connecting all technical disciplines under one accountable framework.
Oshawa, ON
860 Denison St #5
Markham, Ontario
L3R 4H1
1-888-393-5553
Show Places
Times Square
New York
Central Park
New York
Empire State Building
New York
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Technical Services

We provide complete technical expertise to maintain, modernize, and optimize your building systems, ensuring safety, efficiency, and long-term value for your Markham facilities.

Mechanical & HVAC Services

Specialized teams handle installation, repairs, and performance tuning for mechanical and HVAC systems, improving comfort and reducing energy costs.

Electrical Services

Our electrical services cover design, upgrades, and maintenance of power and lighting systems to keep operations efficient and compliant.

Building Automation Systems (BAS)

With advanced building automation systems, we integrate HVAC, lighting, and metering controls for smarter, more responsive facility management.

Energy Management

Our energy management services identify savings, reduce emissions, and support sustainability initiatives using data-driven analytics and IoT tools.

Design, Build, & Engineering

Through design, build, and engineering expertise, we provide turnkey project execution, from concept through commissioning, with precision, safety, and code compliance.

Integrated Facility Services

Our Integrated Facility Services streamline multi-trade operations, aligning all technical maintenance under one partner for consistent performance and accountability.

Industries Served in Markham

We support our city’s diverse business community, from tech campuses and healthcare facilities to manufacturing and municipal buildings, with customized facility management and technical services built for reliability and growth.

Why Choose Us

Our teams combine technical excellence with responsive service and proven systems to keep Markham’s buildings efficient, safe, and compliant.

Partner With Our Markham Facility Management Team

Let’s collaborate on a facility management strategy that strengthens your building’s performance and reliability.  Contact us to discuss how GDI Ainsworth can deliver customized technical solutions for your Markham operations.

Meet your Experts

Technical Services

Local Experts

Anne Nicholson

Director of Operations

[email protected] 

 

Calen Sansom

Director of Sales

[email protected] 

Regional Experts

Marco Ottavino

SVP Eastern Canada

[email protected] 

 

Randy Carr

SVP Service & Maintenance

[email protected]  

 

Randy Topp

SVP Energy Services

[email protected]