Commercial & Industrial Generator Services — Central Oklahoma | 405-375-4822
A generator that won’t start when the power goes out is worse than no generator at all — because someone signed off that it was ready. Hartzell’s installs, services, and holds preventive maintenance agreements on commercial and industrial generator systems from small commercial backup units to multi-megawatt critical infrastructure plants. We’ve done this work at data centers, telecom facilities, and classified national infrastructure sites. We know what it takes to keep these systems ready.
Generator Services We Provide
Installation & Commissioning
New generator installation from pad preparation through fuel system, exhaust, automatic transfer switch wiring, and load bank commissioning. Crane coordination when required. Full startup documentation.
Preventive Maintenance Agreements
Scheduled PMA contracts covering fluid analysis, load bank testing, transfer switch exercise, cooling system inspection, fuel system integrity, battery condition, and full documentation for compliance records.
Transfer Switch Service
Automatic transfer switch (ATS) installation, testing, and repair. Manual transfer switch service. Switchgear inspection. Exercise testing to confirm the system transfers to generator load and back correctly.
Emergency Response
When your generator fails to start or trips on a fault during an outage, we respond. Troubleshooting, repair, and restart. 24/7 availability for facilities with critical uptime requirements.
Preventive Maintenance — What It Actually Takes
Holding a PMA on large commercial generators is an organizational commitment, not just a service call. The data center contracts we’ve held required four fully certified technicians available around the clock — any one of whom could respond to the facility, know the equipment cold, and handle whatever they found. That’s not a number you hit by accident. It means training, certification, documentation, and a culture that takes the work seriously.
Mission-Critical Generator Facilities
Some generator rooms tell you immediately what kind of facility you’re in. Halon 1301 fire suppression at the entrance means the equipment inside is too valuable to risk with water. Earmuff stations on the wall means the generators run loud and long. Multiple Cummins units on containment pads means this isn’t backup power for a few office lights — it’s the last line of defense for a facility that cannot go dark.
From Sprint to your facility: Before Hartzell’s was servicing generators in Kingfisher and OKC, Dave was the onsite engineer at a classified national infrastructure facility — Sprint’s largest project in company history. The generator and switchgear plant at that facility was designed, installed, commissioned, and documented to a standard where every single piece of equipment had a complete operating manual, a maintenance manual, and an identifier tag. That’s the documentation standard we bring to every generator PMA we hold today.
Who We Serve
Mission-critical backup power — zero tolerance for generator failure on a utility outage.
Life safety systems require tested, documented, reliable generator backup. NEC 700/701/702 compliance.
Office buildings, retail, government facilities — standby power for critical loads and code compliance.
Process continuity during utility outages. Large KW ratings, fuel management, PMA contracts.
Generator Installation, Service & PMA — Central Oklahoma
Kingfisher to OKC, Enid to El Reno — Hartzell’s services generator systems at every scale. Call for a consultation or PMA quote.
Ready to Schedule?
Call 405-375-4822 or book online. Same-day appointments often available. Free estimates on new systems.
Nearby Communities We Serve
Frequently Asked Questions
What types of generator systems does Hartzell’s service?
We install, service, and maintain commercial and industrial generator systems — from small commercial backup units to multi-megawatt critical infrastructure installations. We hold preventive maintenance agreements (PMAs) on generators at data centers, telecom facilities, and mission-critical sites across central Oklahoma.
What does a generator preventive maintenance agreement (PMA) include?
A PMA covers scheduled load bank testing, fuel system inspection and conditioning, battery testing and replacement, coolant analysis, oil and filter changes, transfer switch testing, and formal certification documentation. For mission-critical facilities, our PMAs provide the paper trail required for compliance audits and insurance.
How often should a commercial generator be serviced?
Most manufacturers recommend a full service every 200 operating hours or annually, whichever comes first. Generators that sit on standby often suffer more from infrequent starts than from use — monthly no-load run tests and quarterly loaded tests keep them reliable when they’re actually needed.
Can Hartzell’s service generators at industrial or classified facilities?
Yes. We have experience maintaining generators at data centers, telecom facilities, and classified critical infrastructure sites. This work requires documentation, access coordination, and a higher standard of reliability verification than standard commercial service — and that’s exactly what our industrial generator PMA program delivers.
What should I do if my generator failed during a power outage?
A generator that won’t start when the power goes out is a liability. If your backup power failed during a critical event, Hartzell’s can assess why it failed, repair or replace the unit, and set up an ongoing PMA to prevent it from happening again. Call 405-375-4822 for emergency generator service in central Oklahoma.
Generator Installation and Service in Oklahoma