
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.
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.
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.
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.

More generators
Other generators we install
One call covers it. Here is the rest of what we do in this area.
Straight answers
Standby Generator Maintenance and Service: common questions
Straight answers from a licensed master electrician. Flip any breaker to read it.
Get a Free EstimateHow 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.
- 20+
- Years of experience
- 180+
- Homeowner reviews in their own words
- 2
- States licensed, New Hampshire and Massachusetts




