Automatic Transfer Switch Installation & Repair

The automatic transfer switch is the critical link between your generator and your electrical system. When the grid fails, the ATS detects the outage, signals the generator to start, and transfers your electrical load from utility power to generator power — all within seconds and without any manual intervention. A malfunctioning ATS means your generator can't do its job, no matter how well-maintained it is.

Ontario Generator Systems provides professional ATS installation for new generator systems, as well as repair and replacement services for existing transfer switches. We work with all major ATS brands and configurations, from residential 100-amp service entrance switches to large commercial systems with multiple transfer points and load-shedding capabilities.

Every ATS installation is performed to Ontario Electrical Safety Authority standards with proper permits and inspections. Our technicians test the complete transfer sequence — utility-to-generator and generator-to-utility — under actual load conditions to verify seamless operation. We also inspect and service existing transfer switches as part of our maintenance programs, catching contact wear, control board issues, and connection problems before they cause a failure.