Generator maintenance across Fairfield County

Ensure your backup power works when you need it.

Keep your standby generator in peak condition with scheduled oil changes, battery testing, and full system diagnostic inspections.

Annual and semi-annual checks

Oil, filter, and plug replacements

Battery and charging diagnostics

Automatic transfer switch testing

State Registered Contractor: CT HIC.0705773
Preventative checks · Oil & filter changes · Battery testing · Diagnostic runs

Generator maintenance

A backup generator is only useful if it starts when the grid goes dark.

Kennedy manages routine maintenance visits to inspect engine oil, filters, spark plugs, batteries, and transfer controls before storm season arrives.

Routine preventative maintenance

Complete cyclical engine oil, filter, and plug replacements to keep your standby unit in factory condition.

  • Oil and filter changes
  • Spark plug replacement
  • Air filter replacement
  • Valve adjustments

System diagnostics & testing

Check battery health, verify voltage and frequency output, and test the automatic transfer switch under simulated load.

  • Battery health testing
  • ATS transfer tests
  • Voltage/frequency check
  • Fault code diagnostics

Keep your standby system ready.

Start with a seasonal maintenance visit or request diagnostics for warning indicators or starting issues.

Annual generator service
Semi-annual inspections
Battery testing & replacement
Oil change & tune-up
ATS diagnostic test
Warning light troubleshooting
Enclosure weatherproofing check
Outage simulation test

Reliable maintenance visits

Three stages of generator readiness.

01

Schedule your visit

Provide your generator brand, model, and last service date to set up a convenient inspection.

02

Execute the checks

The technician services the engine, checks all electric connections, and runs diagnostic tests.

03

Review the status

Receive a clear report on battery life, oil condition, and any recommendations for repairs.

Ready to check your generator?

Schedule your preventative maintenance before the next storm.

Tell us the system make and last service date. We will dispatch a qualified technician to complete the diagnostics.

Maintenance costs

What affects the price?

Read the cost guide
Generator capacity and engine sizeAccess and clearance around the unitWhether parts need replacementAir-cooled versus liquid-cooledTravel and scheduling timing

Direct answers

Questions homeowners ask before moving forward

Clear answers help you decide whether the next step is a fit. Project-specific facts are confirmed during review and documented before work begins.

How often should a generator be serviced?
Standby generators should receive professional maintenance at least once a year, or every 100 hours of continuous run time during extended power outages.
How long do generator batteries last?
Most standby generator batteries last between 3 to 5 years. Routine testing helps identify a failing battery before it prevents the generator from starting.
Why does my generator exercise weekly?
Weekly exercise runs keep the engine lubricated, prevent fuel line issues, and run self-diagnostic checks to report any system faults.
Can you service liquid-cooled generators?
Yes, our technicians service both air-cooled and liquid-cooled residential standby units.
Do you offer emergency generator repairs?
Yes, we coordinate emergency troubleshooting and repairs for standby units during outages.

Schedule standby generator maintenance.

Provide your property town, generator brand, and any active fault codes or service requirements.

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