CULLITON is a premier, multi-trade contractor delivering Mechanical, Electrical, HVAC Installations and Service for Industrial, Commercial, and Institutional customers in Ontario.




At CULLITON, quality begins with understanding our customers exact installation and service needs. Going the extra mile for our customers at every stage of the building life cycle is what CULLITON is all about.

Our Service Area

From our main corporate office in Stratford and regional branch locations in London and Mississauga, CULLITON serves customers throughout Southwestern Ontario, the Greater Toronto Area, and the Golden Horseshoe.

Waterloo Region, London area (Middlesex-Elgin), GTA West (Halton-Peel), GTA North (York Region), and greater Hamilton are the cornerstones of our service area. We cater to small-town, rural, and lakefront businesses and institutions in Perth, Huron, and Lambton Counties to the west, through to Niagara Region in the east.

We also strive to accommodate customers outside of our core service area on a case-by-case basis, such as those in Windsor and Chatham-Kent to the south, and Bruce and Grey counties to the north.

MississaugaLondonStratfordKitchenerRichmond HillVaughanBramptonHamiltonNiagaraFallsOakvilleBurlingtonSarniaWindsorOwen SoundLake ErieLake Huron