Factory-trained Cummins technician servicing a standby generator
GeneracCummins
Factory-Authorized Service

GENERATOR SERVICE & MAINTENANCE

Factory-trained technicians keeping your Generac and Cummins standby generator ready for the next outage — professional installation, annual maintenance, and repair across North & South Carolina.

Why maintenance matters

A standby generator is the rare machine that has to start perfectly after sitting idle for months. When the grid drops at 2 a.m. in an ice storm, there is no warm-up lap — the unit either starts and carries the house, or it doesn't. The #1 reason generators fail during an outage isn't a catastrophic part: it's a skipped maintenance item. A dead battery. Old oil. A rodent nest in the enclosure. A breaker that never got load-tested.

Manufacturers also require documented maintenance to honor the factory warranty — neglect can void coverage on the most expensive components. Professional service is cheap insurance against a spoiled freezer, frozen pipes, a flooded basement, or a dark house through a multi-day outage. The whole point of owning a standby unit is that it works when you need it. Maintenance is what keeps that promise.

Our services

Service
Annual Preventive Maintenance

Full multi-point service that keeps the unit reliable and the factory warranty intact.

Service
Repair & Diagnostics

Won't start, faulting, or running rough? We diagnose and fix Generac and Cummins units.

Service
Factory Warranty Service

Factory-authorized for Generac and Cummins — warranty repairs performed with genuine OEM parts.

Service
Battery Replacement

The #1 cause of no-starts. We test and replace batteries on schedule before they leave you in the dark.

Service
Transfer Switch Service

Inspection and testing of your automatic transfer switch — the brain of the standby system.

Service
Installation & Start-Up

Turnkey installs and factory commissioning across North and South Carolina.

Service
Load Bank Testing

Verify full-output performance under real load — critical for larger and commercial units.

Service
Remote Monitoring Setup

Get unit status, run history, and fault alerts on your phone via Mobile Link or PowerCommand.

What's included in a maintenance visit

  • Oil & oil filter change
  • Air filter inspection / replacement
  • Spark plug service
  • Battery load test (replacement if needed)
  • Valve clearance check (per model)
  • Full load / operational test + automatic transfer test
  • Controller scan for fault codes
  • Fuel system & connections inspection
  • Enclosure check (debris, corrosion, rodent nests)
  • Firmware / Mobile Link update
  • Coolant check (liquid-cooled units)
  • Documented service record for your warranty file

Maintenance plan options

Plan members get priority storm-season scheduling — when the grid goes down across the region, we come to you first. Pricing depends on unit size, fuel, and air- vs liquid-cooled, so we quote it cleanly per home.

Most popular
Worry-Free Annual Plan

Our most complete coverage — for homeowners who want it handled. Priority storm-season scheduling, full annual service, and discounted repair rates.

  • Full multi-point annual maintenance visit
  • Battery service included
  • Coolant service included (liquid-cooled units)
  • Priority storm-season scheduling — we come first when the lights go out
  • Discounted rates on any repairs
  • Documented service record for your warranty file
Contact for pricingRequest Pricing
Core coverage
Essential Annual Tune-Up

The core annual service that keeps your unit reliable and your factory warranty current.

  • Oil & oil filter change
  • Air filter inspection / replacement
  • Spark plug service
  • Battery load test
  • Full load + automatic transfer test
  • Controller scan and documented service record
Contact for pricingRequest Pricing

The factory-authorized advantage

Not every electrician is a generator technician. As a factory-authorized dealer for Generac and Cummins, we install and service with genuine OEM parts, our technicians are trained on the actual platforms in your yard, and our work preserves your factory warranty instead of jeopardizing it.

A general handyman or an unauthorized contractor can do real damage on paper — a single undocumented repair or the wrong part number can flag a future warranty claim for denial. Factory-authorized service means the right diagnostic tools, the right parts, and the documentation the manufacturer expects.

How it works

1
Schedule

Call us or request service online. We'll confirm your unit, location, and a service window.

2
We service on-site

A factory-trained technician arrives with genuine OEM parts and runs the full multi-point service.

3
You're outage-ready

Documented, tested, transfer-tested, and covered. We leave you with the paperwork for your warranty file.

Turnkey service across North & South Carolina — see our service area.

Maintenance schedule quick reference

Weekly self-test

Automatic — your generator runs this itself.

Oil & filter

Every 1–2 years or 100–200 run-hours (per manual).

Battery

Replace every ~3 years, sooner if a load test fails.

Professional inspection

Once a year, plus after any multi-day outage.

For the full owner-friendly breakdown, read our home generator maintenance guide.

What customers say

4.5
174 Google reviews

Frequently asked questions

How often does a standby generator need maintenance?
Manufacturers recommend a professional inspection at least once a year, plus an oil and filter change on the interval in your owner's manual (typically every 1–2 years or 100–200 run-hours). Your generator already runs its own weekly self-test automatically — that's normal and helpful, but it doesn't replace annual hands-on service.
What's included in a generator maintenance visit?
A full visit covers: oil and oil filter change, air filter inspection and replacement as needed, spark plug service, battery load test (replacement if needed), valve clearance check per model, full operational load test and automatic transfer test, controller scan for fault codes, fuel system and connections inspection, enclosure check for debris, corrosion and rodent nests, firmware/Mobile Link update, coolant check on liquid-cooled units, and a documented service record for your warranty file.
Do you service generators you didn't install?
Yes. We service any Generac or Cummins unit regardless of who installed it, and we work on most other major brands. Bring us your existing generator and we'll get it back to outage-ready.
Do you service both Generac and Cummins?
Yes — we are factory-authorized for both Generac and Cummins. Our technicians are trained on both platforms and we stock genuine OEM parts for both.
Will skipping maintenance void my warranty?
Manufacturers require documented maintenance to honor the factory warranty. Skipped oil changes, dead batteries, and undocumented repairs by unauthorized techs can lead to denied warranty claims. A factory-authorized service visit keeps your warranty intact and gives you the paperwork to prove it.
How much does generator maintenance cost?
It depends on unit size, fuel type, whether the unit is air-cooled or liquid-cooled, and whether you're on an annual plan or booking a one-time visit. We don't publish a single flat price because the right service for a 14 kW air-cooled is not the same as for a 60 kW liquid-cooled. Request a quote and we'll give you a real number.
Do you offer maintenance plans?
Yes. Our Worry-Free Annual Plan is full coverage with priority storm-season scheduling, batteries and (on liquid-cooled units) coolant included, and discounted repair rates. Our Essential Annual Tune-Up is the core annual service that keeps your unit reliable and your warranty current. Plan members get priority scheduling when storms hit.
What areas do you serve?
Turnkey service across North and South Carolina, including the Lake Norman / Charlotte metro and the Charleston metro. See our service area page for the full list of cities.
My generator won't start — can you fix it?
Yes. We diagnose and repair no-start conditions, fault codes, rough running, transfer-switch issues, and battery and charging problems on Generac and Cummins units. The most common cause of a no-start is a dead battery — easy fix if caught on schedule.
Do you service commercial and liquid-cooled units?
Yes. We service both residential and commercial generators, including liquid-cooled platforms, and we offer load bank testing to verify full-output performance for larger and commercial units.
Ready when the lights go out

Keep your generator outage-ready.

Factory-authorized maintenance, repair, and installation for Generac and Cummins across NC & SC. Real technicians, genuine parts, documented work.