Generator Maintenance: How to Keep Your Backup Power Ready Year-Round

A whole-home standby generator is a major investment in your family comfort and safety, but like any mechanical system, it needs regular maintenance to perform reliably when you need it most. The good news is that modern generators are designed to be relatively low-maintenance, and a simple annual service combined with some basic homeowner checks is all it takes to keep your system in peak condition. Here is what Hamilton homeowners need to know about keeping their backup power ready year-round.

Weekly Exercise Cycles: What Your Generator Does on Its Own

Your standby generator is programmed to run a brief exercise cycle once a week, typically for 10 to 20 minutes. This automatic run circulates oil through the engine, charges the starter battery, and verifies that all systems are functioning correctly. You will hear your generator start up at whatever day and time was set during installation. This is completely normal and essential for reliability. If you notice that your generator is not running its weekly exercise cycle, it may indicate a problem with the battery, a fault code, or a gas supply issue. Check the generator display panel for any error codes and contact your service provider if you see a warning.

What Homeowners Can Do Between Service Visits

There are several simple things you can do throughout the year to keep your generator in good shape. Walk around the unit every month or so and make sure the area is clear of leaves, snow, debris, and any objects that could block airflow or exhaust. Check that the enclosure doors open freely and that no rodents have taken up residence inside the cabinet, which is more common than you might think in rural parts of Hamilton and the Niagara area. Keep an eye on the generator display for any warning lights or fault codes. Make sure the circuit breaker on the generator is in the on position and that your automatic transfer switch shows normal status. If your unit runs on propane, check the fuel level gauge periodically to ensure you do not run dry.

Annual Professional Maintenance: What We Check

Once a year, your generator should be serviced by a qualified technician. A professional annual maintenance visit includes changing the engine oil and oil filter, replacing the air filter, inspecting and if necessary replacing the spark plugs, checking the battery condition and charge level, testing the coolant level and condition on liquid-cooled models, inspecting all electrical connections for corrosion or looseness, testing the automatic transfer switch operation, verifying fuel system integrity, and running the generator under load to confirm output voltage and frequency are within specification. This comprehensive check catches small issues before they become big problems and keeps your warranty valid.

Seasonal Considerations for Ontario Homeowners

Hamilton and the Niagara region present some specific seasonal maintenance considerations. Before winter, ensure that the generator enclosure is free of accumulated leaves from autumn and that the intake and exhaust vents are unobstructed. After heavy snowfalls, clear snow from around and on top of the generator so it can start and run without restriction. In spring, inspect for any damage from ice or shifting ground around the concrete pad. Summer is the ideal time to schedule your annual professional service so the unit is in top shape heading into the fall and winter storm seasons when you are most likely to need it.

The Cost of Skipping Maintenance

Neglecting maintenance is the most common reason standby generators fail to start when the power goes out. An engine that has not had an oil change in years may seize. A battery that has gone flat may not have enough power to crank the engine. A clogged air filter can prevent the engine from running at full capacity. A failed spark plug can keep the engine from firing at all. The cost of an annual service visit is minimal compared to the cost of a generator that fails when your basement is flooding or your furnace stops running in the middle of a January ice storm. Most importantly, skipping maintenance can void your manufacturer warranty, leaving you on the hook for expensive repairs that would otherwise be covered.

Remarkable Electric offers annual maintenance plans for homeowners across Hamilton, Stoney Creek, Ancaster, Dundas, Grimsby, and the broader Niagara region. Our technicians are trained on Generac, Briggs & Stratton, and Champion generators and carry common replacement parts so most services are completed in a single visit. Contact us to schedule your annual maintenance or to sign up for our service plan so you never have to remember to book it yourself.

• What to Expect During a Generator Installation: A Step-by-Step Guide — /blog/generator-installation-step-by-step-guide

• Do I Need a Whole-Home Generator? 5 Signs It's Time — /blog/do-i-need-a-whole-home-generator-5-signs

• Standby Generator vs Portable Generator: Which Is Better for Ontario Homes? — /blog/standby-vs-portable-generator-ontario-homes

➡ Learn more about our Backup Power & Generators service — /services/backup-power-generators