Whole-Home Standby Generators for Coastal North Carolina

Installation, Repair, and Maintenance for Homes Across Onslow County

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Backup Power You Can Count On When the Grid Goes Down

Hurricanes, tropical storms, and severe thunderstorms knock out power across Onslow County every year. Florence, Matthew, and Dorian all left coastal NC neighborhoods without electricity for days. A whole-home standby generator turns on automatically within seconds of an outage and keeps your HVAC, refrigerator, well pump, and medical equipment running until grid power returns.

Kennedy's Heating & Air Conditioning installs, repairs, and services automatic standby generators for homeowners across Richlands, Jacksonville, Camp Lejeune, Sneads Ferry, Surf City, Swansboro, Emerald Isle, Hubert, Holly Ridge, and the surrounding Onslow County communities. We are a family and veteran-owned company, and we install generators the same way we install heat pumps and air conditioners: sized properly, permitted correctly, and tested before we leave the driveway.

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Why Onslow County Homes Need a Standby Generator


Hurricane Season

Coastal NC sits in the Atlantic hurricane corridor. Extended outages after named storms are a regular reality from June through November.

HVAC Continuity

Summer humidity and winter cold snaps make a working heat pump or furnace a safety issue, not a comfort issue, for young children and older family members.

Medical Equipment

Oxygen concentrators, CPAP machines, and refrigerated medications all depend on uninterrupted electricity to keep working.

Well & Septic

Homes on a private well or grinder pump lose running water the moment the power goes out. A standby generator keeps fixtures, toilets, and pumps working.

Our Generator Services


From sizing and installation through annual maintenance, Kennedy's handles every step.

Standby Generator Installation

We walk through your home, calculate your essential and full-load electrical demand, and recommend a generator sized to match. Installation includes the concrete pad, fuel line connection (natural gas or propane), and the automatic transfer switch that ties the generator into your electrical panel. Every install is permitted, inspected, and tested under load before we close the job.

Generator Repair & Diagnostics

If your generator failed its last self-test, will not start during a power outage, or is throwing a fault code, our technicians diagnose ignition systems, fuel delivery, battery and charging issues, control boards, and transfer switch failures. We service all major residential standby brands.

Annual Maintenance

A standby generator only protects your home if it actually starts when called. Annual maintenance covers oil and filter changes, spark plug inspection, fuel system check, battery load test, transfer switch test, and a live exercise cycle. We recommend scheduling maintenance before hurricane season begins.

Transfer Switch Services

The automatic transfer switch is the brain of your backup power system. We install new ATS units, replace aging or failed switches, and troubleshoot transfer failures so power moves cleanly between the utility and the generator without manual intervention.

Sizing the Right Generator for Your Home


Generator sizing is rated in kilowatts (kW). The right size depends on your square footage, the appliances and circuits you want to keep running, and whether you want full-home or essentials-only coverage.

  • 10 to 12 kW: Essentials only. Refrigerator, key lighting, furnace blower, sump pump, and a few outlets. A budget-friendly choice for smaller homes.
  • 16 to 18 kW: The most common size for 1,500 to 3,000 sq ft homes. Powers a central HVAC system plus most household circuits.
  • 20 to 22 kW: Larger homes around 3,000 to 4,500 sq ft, especially those with electric water heaters or multiple HVAC zones.
  • 24 to 26 kW and Up: Whole-home coverage for 4,500+ sq ft properties and homes with heavy electrical demand such as a workshop, pool, or guest suite.

We size every install on site rather than over the phone, because the right answer depends on your specific panel, circuits, and fuel supply.

Natural Gas or Propane?


Natural Gas

If your home already has a natural gas line, this is the simpler and lower-fuel-cost option. The utility provides effectively unlimited fuel during an outage, so there is nothing to refill. Natural gas is not available in every part of Onslow County, so we check service availability before recommending it.

Propane (LP)

Propane works anywhere a tank can be placed, which makes it the right answer for most rural and semi-rural properties around Richlands and the coast. Runtime depends on tank size. We help you plan tank capacity around how long you want to run after an outage.


Generator Frequently Asked Questions

How fast does a standby generator come on?

An automatic standby generator senses the loss of utility power, starts on its own, and the transfer switch hands power over to the generator in roughly 10 to 30 seconds. You may notice a brief dip, but the system restores power without any action on your part.

Will a standby generator run my whole house?

It can, if the unit is sized for whole-home coverage. Some homeowners choose to power only essential circuits (HVAC, refrigerator, well pump, key lighting) to keep the upfront cost lower. We help you weigh the trade-offs during the in-home assessment.

How often does it need maintenance?

Annual maintenance is the minimum, and we schedule it before hurricane season. We also recommend confirming the weekly self-test ran and that the battery indicator stays green between visits.

Do you service the generator I already own?

Yes. Even if Kennedy's did not install the unit, we can take over maintenance and repair on most major residential standby generators. Send us the brand and model and we will confirm before scheduling.

Is financing available?

Yes. Standby generators are a substantial investment, and we offer financing options the same way we do for HVAC replacements. Visit our financing page or ask us when we come out for the quote.

Located in Jacksonville and want a city-specific deep dive? Visit our Jacksonville generator services page for ZIP-level and Camp Lejeune coverage details.

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Contact Kennedy's Heating & Air

Family-owned company serving Jacksonville, Camp Lejeune, and coastal North Carolina. Call today for expert HVAC service.

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Serving Jacksonville, NC & Surrounding Areas

Primary Service Areas: Jacksonville, Camp Lejeune, Sneads Ferry, Surf City, North Topsail Beach, Topsail Beach, Holly Ridge, Richlands, Swansboro, Emerald Isle, Hubert, and throughout Onslow County and coastal North Carolina.

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