ESA-LICENSED · HOME STANDBY GENERATORS · 24/7, NO AFTER-HOURS FEES
Generator Repair & Maintenance Toronto & GTA
Our licensed electricians provide whole house generator repair and maintenance for Generac, Kohler, Cummins and Briggs & Stratton units across Toronto and the GTA, with a written quote before any work begins.
Won’t start in a power outage
Runs, but the house stays dark
Annual maintenance is due
GENERATOR REPAIR SERVICES
Generator Repair Near Me, Service & Maintenance
One team for the whole standby system: we fix a generator that has failed, and we service it so it doesn’t fail in the next outage.
Standby Generator Repair
Generator repair Toronto and generator repair near me for home standby units that won’t start, shut down under load or show fault codes. We repair control boards, batteries, starters, voltage regulators and automatic transfer switches.
Standby Generator Service & Maintenance
Scheduled generator maintenance for Generac, Kohler and Cummins units: oil and filters, spark plugs, battery testing, firmware updates and functional and load testing as appropriate, so your generator is ready before winter storms.
Automatic Transfer Switch Repair
The generator runs but the house stays dark, or power doesn’t go back to the grid afterwards. We troubleshoot and repair the ATS, its controls and the wiring to your panel.
BEFORE YOU CALL
We Don’t Service Portable Generators
If your generator has wheels, a pull cord or a fuel tank you fill by hand, it’s a portable unit. That includes Honda, Champion, Predator, Firman, Westinghouse, DuroMax and Generac GP or iQ portable models. We don’t repair or maintain portable generators. For engine, carburetor or pull-start problems, a small engine repair shop is the right call, and usually the cheaper one.
We Service
We repair and maintain home standby generators that are permanently installed outside the house, run on natural gas or propane and connect to your panel through an automatic transfer switch. That covers Generac, Kohler, Cummins and Briggs & Stratton standby models.
We Don’t Service
We don’t work on portable gasoline, dual-fuel or inverter generators, or on RV, camping and job-site units. That includes engine, carburetor and pull-start repairs, and portable models of any brand, Generac included.
RESIDENTIAL & STANDBY
Why Home Generator Repair Needs a Licensed Electrician
A standby generator is wired into your panel through a transfer switch, so it is part of your home’s electrical system, not a separate appliance. Our ESA-licensed electricians fix the generator and the wiring behind it, and our TSSA-certified gas fitters handle the fuel side.
Electric Generator Repair
Control boards, voltage regulators, batteries and starters repaired on Generac, Kohler, Cummins and Briggs & Stratton standby units.
Transfer Switch & Panel Work
Automatic transfer switch testing and repair, generator breakers, and the wiring between the generator, the ATS and your panel.
Backup Generator Maintenance
Factory-scheduled backup generator maintenance and functional and load testing as appropriate that keep your unit storm-ready before the next outage.
Warning Signs
Signs You Need Generator Repair
A generator that fails its weekly exercise cycle will fail during an outage too. Book generator repair if you notice any of these:
- 01
Generator Not Starting
A generator not starting, cranking slowly or starting and then shutting down usually points to a weak battery, a starter fault or a fuel supply problem.
- 02
Warning Lights or Fault Codes
A red light or a code on the controller (low oil, overcrank, overspeed) means the unit has stopped itself to prevent damage. It needs a technician, not a reset.
- 03
Transfer Switch Doesn’t Switch
The generator runs, but your home stays dark, or power doesn’t return to the grid afterwards. The automatic transfer switch or its wiring needs repair.
- 04
Flickering Power or Surging Under Load
Lights that flicker or appliances that trip on generator power point to a voltage regulator, governor or overload problem that can damage electronics.
- 05
Strange Noises, Smoke or Leaks
Knocking, rattling, black smoke or oil and fuel under the unit are signs to shut the generator down and schedule generator service before it fails completely.
WHAT WE REPAIR
Common Generator Repairs We Handle
- 01
Controller & Circuit Board Repair
A blank display, repeated fault codes or a failed weekly exercise cycle may point to a generator control board problem. Our technicians check the controller, power supply and wiring before recommending generator control board repair or replacement.
- 02
Voltage Regulator (AVR) Repair
Generator voltage fluctuation, flickering lights or unstable output can indicate a voltage regulator fault. We test the output and related electrical components to determine whether AVR repair or replacement is needed.
- 03
Starter, Battery & Charger Repair
If your generator cranks but won’t start, starts slowly or has a dead battery, we check the starter circuit, charging system and electrical connections. Generator battery replacement and charger repairs are completed as needed.
- 04
Sensors & Safety Shutdowns
Low oil pressure warnings, overspeed faults and high-temperature shutdowns can stop a generator from operating. We inspect the electrical controls and sensors and determine whether further mechanical service is required.
- 05
Fuel Supply & Gas Leak Diagnostics
A standby generator often fails to start because of a fuel supply problem. If the fault is on the gas side — a fuel valve, regulator or gas connection — our TSSA-certified gas fitters repair it, so you don’t need a second contractor. If you smell gas, leave the house and call Enbridge Gas first.
- 06
Automatic Transfer Switch & Wiring Repair
A generator running but supplying no power to the house may have a faulty automatic transfer switch, generator breaker or control wiring. Our electricians troubleshoot ATS operation, electrical connections and the transfer circuit.
From a standby generator that won’t start to a generator running but not producing power, Sparky’s diagnoses electrical faults in Generac, Kohler, Cummins and Briggs & Stratton backup generators. Our generator repair service in Toronto covers control boards, battery systems, voltage regulation, safety controls and transfer switch problems.
GENERATOR MAINTENANCE
Generac Generator Maintenance & Annual Service
Is Your Standby Generator Ready for Winter?
A standby generator sits idle for months, then has to start within seconds when the grid goes down. That’s why we recommend home generator maintenance every fall, before ice-storm season, plus any service your manufacturer’s run-hour schedule calls for. Our whole house generator service covers units we didn’t install too, and every visit ends with a written service report for your warranty and insurance records.
Engine & Battery Service
Oil and filter change, spark plugs, battery load test, charger check and a cleared intake and exhaust.
Transfer Switch & Load Test
ATS contacts and wiring, controller fault history, and a simulated outage to confirm the house switches over.
24/7 EMERGENCY GENERATOR REPAIR
Emergency Generator Repair in Toronto & GTA
Generators fail when you need them most: in an ice storm, a heat wave or a multi-day outage. If you need emergency generator repair near me with the power out and a sump pump on the line, our team provides 24/7 generator repair Toronto homeowners can reach day or night, with no after-hours premium.
(647) 372-193701 /
Generator Won’t Start After a Power Outage
We fix dead batteries, starter faults and overcrank shutdowns, including a standby generator that starts, then shuts off.
02 /
Generator Running but No Power to House
Priority backup generator repair when the unit runs but isn’t transferring power: transfer switch faults, tripped generator breakers and damaged control wiring.
03 /
Voltage Fluctuation & Overload Repair
Fast repair for generators that surge, flicker or shut down under load, tested at full load before we leave.
BRANDS WE SERVICE
Standby Generator Brands We Repair & Maintain
- 01
Generac
Generac is the most common standby brand we see in the GTA. Our Generac generator service covers repair and maintenance of Guardian and liquid-cooled models, Evolution and Nexus controllers, and Generac transfer switches.
- 02
Kohler
Kohler residential standby generators and Kohler transfer switches: controller faults, starting problems, voltage issues and scheduled maintenance.
- 03
Cummins
Cummins QuietConnect home standby generators: diagnostics, battery and starting systems, transfer switch problems and annual service.
- 04
Briggs & Stratton
Briggs & Stratton home standby generators, including older units still running on their original transfer switch.
Need Generator Repair? Get in Touch With Our Team
Need Generator Repair? Get in Touch With Our Team
FAQ — Generator Repair Toronto
How Much Does Generator Repair Cost in Toronto?
Generator repair cost depends on the fault, generator brand, required parts and labour involved. Battery replacement, control board repair and automatic transfer switch repair can have different costs. Sparky’s diagnoses the problem and provides a written quote before starting work.
Why Won’t My Standby Generator Start?
A standby generator that won’t start may have a weak battery, faulty starter, charging problem, fuel supply issue or active safety shutdown. If your generator cranks but won’t start, our technicians check the fault history and starting system to identify the cause before recommending repairs.
Why Is My Generator Running but Not Producing Power?
A generator running but not producing power may have a tripped output breaker, voltage regulator problem or electrical fault. If the generator produces electricity but your house remains dark, the automatic transfer switch or control wiring may be responsible. We test the generator output and transfer system to locate the problem.
Do You Offer Generac Generator Repair in Toronto?
Yes. Our Generac generator repair service covers electrical troubleshooting, batteries, controllers, voltage regulators and transfer switch problems. We also service supported Kohler, Cummins and Briggs & Stratton standby generator electrical systems. Parts availability and the repair scope depend on the model.
What Do Generac Generator Error Codes Mean?
Generac generator error codes can indicate overcrank, low oil pressure, overspeed, overheating or other operating faults. The exact meaning depends on the controller and model. Rather than repeatedly resetting the alarm, our technicians read the fault history and test the relevant components to determine what caused the shutdown.
How Often Does a Standby Generator Need Maintenance?
Standby generator maintenance should follow the manufacturer’s schedule, with additional attention before severe winter weather. Service may include oil and filters, spark plugs, battery testing, controller checks and transfer switch testing. The required intervals depend on operating hours, age and the generator model.
Can You Repair an Automatic Transfer Switch?
Yes. Our electricians provide automatic transfer switch troubleshooting and repair for supported residential backup power systems. We check the ATS controls, contactors, wiring and power transfer operation. A faulty transfer switch can leave your home without backup electricity even when the generator engine is running.
Do You Offer Emergency Generator Repair 24/7?
Yes. Sparky’s provides emergency generator repair in Toronto and the GTA, 24 hours a day, seven days a week, with no extra after-hours premium. If your standby generator won’t start during an outage or is running without supplying power to your house, call us for emergency electrical troubleshooting.
Why Does My Generator Start and Then Shut Off?
A generator that starts and then shuts off may have a battery charging issue, fuel supply problem, overload or safety shutdown. Low oil pressure, overheating and controller faults can also stop operation. Our generator troubleshooting process starts with the fault codes and operating history to identify the cause.
What Toronto Homeowners Say About Our Generator Repair Service
Generator Repair & Maintenance Across Toronto & the GTA
Sparky’s licensed electricians provide 24/7 generator repair and maintenance across Toronto, including North York, Scarborough, Etobicoke, East York and Downtown. From Generac starting failures to transfer switch problems, we restore backup power with no extra charge for nights or weekends.
