Generator Repair & Maintenance in Tulsa, OK

A backup generator only matters if it starts when the power doesn't. If yours is throwing codes, running rough, or sat untouched since the last storm, our licensed electricians get it running right and keep it that way.

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4,000+ Five-Star
Google Reviews

Serving Tulsa
Since 2007

Licensed Electrical Contractor

Voted Tulsa World
"Best in the World"

When the Lights Go Out, You Find Out Fast Whether Your Generator Works

A standby generator is one of those things you forget about until the moment you need it. Then an ice storm rolls through Green Country, the power drops, and the unit either kicks on the way it should or sits there silent. A generator that will not start, cycles on and off, or trips its breaker under load is not protecting your food, your sump pump, or your family. Most of the time the cause is a dead battery, old fuel, a clogged filter, or a transfer switch that never got serviced. The good news is that almost all of it is preventable with the right care.

Our Generator Repair Process

Step one | Diagnose the real fault

We test the battery, fuel system, oil, filters, and the automatic transfer switch, then read the controller codes so we are fixing the actual problem, not guessing.

Step two | Repair and tune

We replace worn parts, clean or swap filters, top off fluids, and correct any wiring or transfer-switch issue so the unit starts and carries the load it is rated for.

Step three |  Test under load and walk you through it

We run the generator through a real start-and-transfer cycle, confirm it powers your circuits, and show you what to watch for between visits.

You get a generator you can trust and a clear picture of its health, with upfront pricing before any work starts.

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What a Half Moon  Generator Service Covers

  • Full diagnostic of battery, fuel, oil, and filters

  • Automatic transfer switch inspection and testing

  • Controller code reading and fault correction

  • Oil, filter, and spark plug service on maintenance visits

  • Load test to confirm the unit powers your home

  • Repairs to wiring, connections, and the generator circuit

  • Honest report on whether a repair or replacement makes more sense

  • Upfront, written pricing with options before we begin

Tulsa Homeowners Trust Half Moon

Licensed Electricians Who Know Backup Power

Half Moon has served Tulsa-area homes since 2007, and our electrical work is led by licensed electrician Nate under Electrical Contractor License #00140295. Backup generators sit at the meeting point of electrical and mechanical systems, which is exactly why a licensed electrician should service yours rather than a handyman. We work on standby and portable units, we understand transfer switches and load calculations, and we hold ourselves to the same standard that earned us Tulsa World "Best in the World" honors two years running. Old-school craftsmanship, modern tools, and no surprises on the bill.

Don't Wait for the Next Storm to Find Out. Get Your Generator Serviced.

Whether your generator quit or you just want it checked before storm season, we answer the phone day or night and schedule your service for the next available appointment.

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Call Now 24/7
Book Online

  • Half Moon Plumbing & Electric provides generator repair and maintenance for homeowners across Tulsa, Owasso, Broken Arrow, and the surrounding Green Country communities. A home standby generator protects your refrigerator, heat, sump pump, and medical equipment when the grid goes down, but it can only do that job if the battery, fuel system, and automatic transfer switch are all healthy. Our licensed Tulsa electricians diagnose generators that will not start, run rough, shut off under load, or trip a breaker, and we service the routine items, oil, filters, spark plugs, and battery, that keep a unit reliable year after year. We work on most major brands of residential standby and portable generators, and we test every repair under real load before we leave. Oklahoma weather is hard on backup power, between summer heat, ice storms, and the long stretches when a generator sits idle, so an annual tune-up is the difference between a generator that runs for a decade and one that fails the night you need it. As a licensed electrical contractor since 2007, Half Moon brings transparent upfront pricing and a satisfaction guarantee to every generator visit. If your generator needs attention in Tulsa or anywhere in the metro, call us anytime or book online, and we will get your backup power back to ready.

Common Questions

Generator Repair and Maintenance FAQ

  • The most common cause is a dead or weak battery, followed by old fuel, a clogged filter, or a transfer switch that did not engage. A diagnostic will pinpoint which one it is, and most are quick fixes once identified.

  • Plan on a professional tune-up once a year, plus an oil and filter change based on run hours. Units that run during long outages need service sooner.

  • Yes. We service permanently installed standby units and portable generators, including the circuits and transfer equipment that connect them to your home.

  • That usually points to the automatic transfer switch rather than the generator itself. The engine runs, but the switch is not handing your circuits over to generator power. We test and repair transfer switches as part of the service.

  • It depends on the unit's age, hours, and the cost of the fault. We give you an honest read on both paths with upfront pricing so you can decide, and we never push a replacement you do not need.

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