Commercial Generator Maintenance

When your operation depends on uptime, LionHeart delivers the commercial generator maintenance that keeps you running.

The Smarter Way to Maintain Your Power

LionHeart’s commercial generator service goes beyond a quick check—we perform detailed inspections, oil and filter changes, and full-system testing to make sure every component performs at its best. We know your operation can’t afford surprises, which is why our team works fast, documents every step, and prevents small problems from turning into costly repairs.

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“We are so thankful for the quick response and correspondence LionHeart provided to us in our emergency. It was a pleasure working with LionHeart and I would highly recommend your services to anyone who is in dire need!”

–  Facilities Management, Chicago, IL

Our Commercial Generator Maintenance Program Keeps Your Equipment Ready

We recommend two generator maintenance inspections per year—one major, one minor—to ensure your system performs flawlessly year-round.

Minor Maintenance

Our Level 1 Inspection includes a comprehensive inspection of the following systems critical for power generation and safety:

  • Governor Controls
  • Fuel System
  • Cooling System
  • Starting System
  • Pre-Heating System
  • Exhaust System
  • Control and Protection Systems

Major Maintenance

Our Level 2 Maintenance Program includes all Level 1 system inspections and the following preventative maintenance and services, if applicable:

  • Replace and dispose lube oil and filters
  • Replace and dispose fuel filters and clean applicable fuel screens
  • Replace and dispose coolant filters (if applicable)
  • Inspection of alternator assembly and lubrication of rear bearing (if applicable)
  • Laboratory analysis of oil, coolant, and fuel sample (optional service)
  • Load Bank Testing (optional service)

When Maintenance Meets Repair

Our job goes far beyond emergency repairs. We specialize in preventive insight—spotting potential failures before they happen. Every recommendation is made as if the equipment were our own: evaluated for criticality, remaining reliable life, and total cost impact. When a repair can safely wait until your next scheduled visit, we clearly mark it “Next PM” to bundle services and deliver meaningful savings—without ever compromising safety or performance.

Your Power, Our Priority

With more EGSA-certified Field Service Engineers than most competitors, LionHeart provides unmatched reliability, responsiveness, and skill. We don’t just maintain generators—we protect your business from the cost of failure.

When uptime matters, trust LionHeart to deliver the commercial generator maintenance and service that keeps your business running without interruption.