Lembo Electric LLCCall
A tan Kohler standby generator on a white concrete pad against white vinyl siding, a gray disconnect on the wall above it and a trimmed lawn in front.

Generator maintenance · Southern NH and the Merrimack Valley

Standby Generator Maintenance and Service in Southern NH and the Merrimack Valley

Routine maintenance, operation checks, and repairs that keep your standby generator ready for the next storm.

What you get

A generator that sits all year has to start on day one

Standby generator maintenance is the routine service that keeps a generator ready to start: fresh oil and filters, a battery test, a look at the spark plugs and air intake, and a check that the transfer switch actually moves the house to generator power. A standby generator can sit for months and then have to run for days, so a yearly maintenance visit is what keeps it from failing on the one night you need it.

Most generator failures during an outage come from things a routine visit catches: a weak battery, old oil, a clogged air filter, or a transfer switch that was never exercised under load. Our maintenance visit covers the engine service the manufacturer calls for, a battery and charger test, a check of the controller for fault codes and the exercise schedule, and a real transfer test. We tell you plainly what we found and what, if anything, needs attention.

  1. Book before the storm season

    Reach out in late summer or fall and we set a visit before the first big storm, with a clear price for the service up front.

  2. Service and inspect

    We change the oil and filters as the schedule calls for, test the battery and charger, check the plugs, intake, and controller, and look over the wiring and transfer switch.

  3. Run a real transfer test

    We run the generator under load through the transfer switch, confirm it carries the house, and give you a plain summary of what we found.

A white Generac standby generator on a pad in a green lawn beside a gray-sided house, a tarp and bags of materials at the edge of a fresh dig.

Straight answers

Standby Generator Maintenance and Service: common questions

Straight answers from a licensed master electrician. Flip any breaker to read it.

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How often does a standby generator need maintenance?

At least once a year for most home standby units, and sooner by run hours after a long outage, following the manufacturer's schedule. Fall is the best time, before the winter storm season, so any weak battery or worn part is fixed while the grid is still up.

What happens during a generator maintenance visit?

We change the oil and filters as the schedule calls for, test the battery and charger, check the spark plugs and air intake, read the controller for fault codes, confirm the weekly exercise is set, and run the unit under load through the transfer switch. You get a plain summary of what we found.

My generator shows a warning light. Can you service it?

Yes. Call us with what the controller shows and we will diagnose it. Common causes are a weak battery, a maintenance reminder, low oil, or a problem the weekly exercise flagged, and many are quick fixes. We tell you honestly whether it is a simple repair or something bigger before any work starts.

Get an honest quote for Standby Generator Maintenance and Service

Tell us what is going on and we will lay out clear, honest options and what they cost.

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States licensed, New Hampshire and Massachusetts