For Greenville businesses, reliable backup power is essential. From healthcare facilities and manufacturers to commercial buildings and data centers, a properly maintained generator ensures operations continue when utility power fails.

At PowerChampions of Greenville, our experienced local team helps businesses stay compliant, reduce downtime, and extend the life of their standby generators. Below is a clear breakdown of how often generators should be serviced and what Greenville businesses should plan for.

Why Generator Service Is Critical for Greenville Businesses

Standby generators often sit idle for long periods and are expected to perform instantly during outages. Without routine service, small issues can lead to costly failures.

Regular generator service in Greenville, SC helps:

• Maintain NFPA 110 compliance
• Prevent emergency breakdowns
• Protect revenue and safety
• Extend generator lifespan
• Control maintenance costs

NFPA 110 requires generators supporting critical loads to be professionally inspected and load tested on a defined schedule. Compliance isn’t optional—it’s a business necessity.

Semi-annual Generator Inspections (Every 6 Months)

Recommended frequency: Twice per year

Semi-annual inspections are the foundation of reliable generator performance. These professional inspections identify wear, fuel issues, battery degradation, and system faults before they cause failures.

Typical inspection scope includes:

• Engine and alternator inspection
• Battery and charging system checks
• Fuel and cooling system review
• Control panel diagnostics
• Operational readiness verification

Inspection costs vary based on generator size and configuration, but skipping these visits often leads to significantly higher repair expenses later.

Annual Generator Service Visit

Recommended frequency: Once per year

In addition to inspections, generators require a full annual service visit. This service addresses consumables and system performance items that wear over time.

Annual service typically includes:

• Oil and oil filter changes
• Fuel filter replacement
• Fluid checks and analysis
• System calibration and testing

Costs vary depending on generator size, age, manufacturer, and usage. Working with a trusted local provider ensures realistic budgeting and predictable service intervals.

Annual Automatic Transfer Switch (ATS) Testing

Recommended frequency: Once per year

Your generator is only effective if the Automatic Transfer Switch (ATS) operates correctly. The ATS detects utility power loss and transfers the electrical load to generator power.

Annual ATS testing ensures:

• Reliable load transfer
• Proper circuit operation
• Code and safety compliance

Testing requires a brief planned power interruption, typically scheduled after business hours to minimize impact.

3-Year Major Generator Service

Recommended frequency: Every 36 months

Every three years, generators require more extensive service due to component aging. This may include replacing:

• Coolant
• Belts and hoses
• Thermostats and sensors

Planning ahead and budgeting incrementally helps avoid unexpected expenses and emergency downtime.

Older Generators Require Proactive Maintenance

Many Greenville facilities operate generators that are 30+ years old. These units can remain dependable, but only with consistent professional oversight.

Older generators benefit from:

• Frequent inspections
• Advance planning for part replacement
• Honest assessments from experienced technicians

Trusted Generator Service in Greenville, SC

At PowerChampions of Greenville, our skilled technicians understand the needs of Upstate businesses. We provide dependable standby generator maintenance in Greenville, helping organizations stay compliant, prepared, and confident in their backup power systems.

Ready to schedule service or build a maintenance plan?
Contact PowerChampions of Greenville today to speak with our local generator service team.