Most commercial generators will start up when tested. But can it run under full load, for hours, when your facility depends on it?
If you haven’t scheduled a load bank test in the last year, you’re taking a real risk with your backup power. And in commercial and industrial settings, where downtime can disrupt critical systems and cost thousands, that’s not a risk worth taking.
What Is a Load Bank Test?
A load bank test is a controlled performance check that simulates the electrical load your facility would place on a generator during an actual outage. It’s not just about whether your generator turns on—it’s about whether it can stay on and carry the load for an extended period of time.
During the test, we gradually apply increasing levels of electrical demand to your generator, monitoring its response under pressure. Think of it like a stress test for your backup system—one that can expose hidden issues before they cause real-world problems.
Why Load Bank Testing Matters
We’ve seen it happen many times: a generator that seems fine during a quick start-up fails the moment it’s needed most. Often, the problems aren’t obvious until the system is pushed to its limits. Weak batteries, clogged filters, overheating, and fuel system issues can all hide in plain sight—until the power goes out and your generator falters under real load.
Annual load bank testing gives you a chance to identify and correct these issues in advance. It’s proactive protection, not just a box to check.
What You’ll Learn from a Load Test
A comprehensive load bank test will tell you a lot about the health of your generator. It evaluates voltage and frequency stability, fuel delivery performance, cooling system response, and how the engine behaves under different load conditions. You’ll also see how efficiently your generator burns fuel and whether there’s excessive carbon buildup—something that, if ignored, can shorten your engine’s lifespan.
And here’s a bonus: by running your generator at full capacity, you help prevent “wet stacking” and remove carbon deposits that build up during low-load operation. It’s maintenance and testing in one.
Make It Part of Your Maintenance Strategy
At American Generator Services, we recommend an annual load bank test as a standard part of your Preventative Maintenance Program. It’s the best way to ensure your generator is truly ready for real-world use—and that your facility stays powered during outages.
Our experienced technicians don’t just run the test. We analyze the results with you, explain what we find, and recommend any necessary repairs or upgrades. It’s straightforward, thorough, and designed to keep your operations uninterrupted.
Why AGS?
We work exclusively with commercial and industrial generators. That means we understand the high-stakes nature of your business, and we bring the tools, insight, and urgency required to keep your systems reliable.
Whether you operate a refinery, hospital, manufacturing plant, or government facility, AGS is here to help you meet power demands without question marks. With expert service, clear communication, and a strong local presence, we’re your partner in generator reliability.
Contact American Generator Services today to schedule your annual load bank test —and make sure your backup power is ready for whatever comes next.
