How Often Should a Home Standby Generator Be Serviced?

A home standby generator is one of those systems homeowners tend to forget about until the power goes out. The problem is that backup power equipment is only helpful if it is ready to work the moment it is needed. That is why regular generator service is so important.

In general, most home standby generators should receive professional service at least once a year. Some systems may need attention more often depending on age, run time, weather exposure, and how frequently the unit has operated during outages. Generators that have seen extended use, or have gone through a long storm season, may need service based on both time and engine hours.

At Allan Dearth and Sons, one of the most common options for homeowners is a bi-annual service agreement. This approach includes a full service visit and an inspection visit six months apart, which helps keep the generator in strong operating condition throughout the year. For some homeowners, an annual full service plan may be the right fit, especially if the system has seen lighter use. The right schedule depends on the equipment, the property, and the household’s comfort level.

Routine service is about much more than changing oil. A proper maintenance visit can include checking engine hours, testing the battery, inspecting spark plugs, evaluating coolant and hoses, checking belts, reviewing electrical connections, and verifying that the unit starts, runs, and transfers power correctly. These checks help identify wear, leaks, corrosion, or performance issues before they create a problem during an outage.

The best time to schedule service is before you need the generator, not after a storm exposes an issue. If it has been more than a year since the last professional visit, if the unit has logged heavy run time, or if you have seen warning indicators or unusual behavior, it is a good idea to schedule an inspection. Regular service helps protect your investment, extend equipment life, and give your family greater confidence when the weather turns bad.