Installation Ontario Fire can install any system, small and large. Our installations include the Toronto Airport, Toronto School Boards, University of Toronto as well as major utilities. Whether it's a small four-zone or a distributed system with thousands of zones we have the expertise to look after the installation. Presently we have over 100 electricians working throughout the GTA. This insures you that we have the capability and resources to get the job done. We are one of the largest installers of Edwards, Mircom, Notifier, Siemens and Simplex systems in Ontario.