Standby Generator Service and Maintenance in New York
A standby generator that passes its weekly exercise can still fail in a real outage. Old oil, a weak battery or a transfer switch that never gets tested are the usual reasons. We service the unit on the maker's schedule and test it under load, so it starts when the lines come down.
- Calls answered 24/7
- Annual service and repairs
- Transfer switch tested
- Oil, filters and battery checked
- Fault codes reviewed
- Transfer tested under load
Panels, breakers and devices we install and service include Square D, Siemens and Eaton panels, Leviton and Lutron controls, and Generac and Kohler standby units.
Generator service in New York and Orange County means an annual visit that changes oil and filters on the maker's schedule, tests the battery, reviews fault codes, checks the fuel supply and tests the transfer switch with the house on generator power. National 2026 figures put residential service at about $172 to $394 a visit, or $200 to $600 a year.
Rather ask a person?(929) 755-0293What generator service involves
A standby generator runs a short exercise cycle every week, which keeps its engine turning but does not prove it can carry the house. A proper service visit goes further: oil and filters changed on the maker's schedule, the battery load-tested, the spark plugs and air filter checked at their intervals, fault history reviewed, and the fuel line and connections inspected for leaks or water.
Then the part most owners never see tested: the transfer. We simulate an outage so the generator starts, the transfer switch moves the house onto it, and the unit carries real load before switching back. That catches the failures that only show up when it matters. If the unit was never sized or wired properly, we say so and point to standby generator installation work to correct it.
Updated September 2026
Three kinds of generator work
Annual Standby Generator Service
Annual service follows the maker's schedule: oil and filter at the stated hours or years, an early change after the first hours on a new unit, battery tested and replaced before it fails, and the air filter and spark plugs checked at their intervals. We clean the enclosure, inspect the fuel line and connections, update the controller if the maker recommends it, and leave a written record, which some warranties require to stay valid, and a note of anything that will need attention before the next visit.
Planning range (national sources, 2026): $172 to $394 per visit for a residential standby unit, about $200 to $600 a year. Coastal-market pricing and building access change the figure; this is a planning band, never a quote.
Generator Repair and No-Start Calls
Most no-start calls trace to a dead battery, a fuel problem or a fault the controller has logged and locked out. We read the fault history first, test the battery and charger, check fuel pressure and the regulator, and work from the evidence rather than swapping parts. When the generator runs but will not carry the house, the problem is often the transfer switch or a load the unit was never sized for, which is a different repair, and we explain which one it is before any parts are ordered.
Transfer Switch Testing
The automatic transfer switch is what moves the house onto the generator, and it rarely gets exercised under real conditions. We test it by cutting utility power at the main, confirming the generator starts and the switch transfers within its normal delay, watching the voltage under load, then restoring utility power and confirming the switch returns and the generator cools down and stops. Sticking contacts and failed controls show up here, not during the weekly exercise, which is why we test it on every service visit.
How generator service runs
Review history
Fault codes and run hours read.
Service the engine
Oil, filters and plugs as scheduled.
Test the battery
Load test and charger check.
Test the transfer
Simulated outage under real load.
Record it
Written service record left with you.
Outages and the maker's schedule
Generac calls for an oil and filter change every 200 hours or two years, an early change after the first 25 hours on a new unit, and a yearly battery check. Across Orange County, where Orange and Rockland lines serve Warwick and the towns around it, long storm outages can put many hours on a unit in a single season, so service often comes due sooner than the calendar suggests.
What sets the cost of generator service
Unit size and what the visit finds decide it.
- Unit size and typeAir-cooled units cost less to service than liquid-cooled.
- Hours since last serviceHeavy outage seasons bring service forward.
- Battery and partsBatteries, plugs and filters wear out on schedule.
- Repairs foundFuel, controller or switch faults add work.
- Service plan or single visitPlans spread the cost across the year.
Generator care yourself versus calling us
| Task | Doing it yourself | With us |
|---|---|---|
| Watching the weekly exercise | Easy and worth doing | Fault history reviewed in detail |
| Clearing leaves and snow | Easy; keep vents clear | Enclosure cleaned and inspected |
| Changing the oil | Possible with the right parts | Oil, filters and records kept |
| Testing the transfer switch | Risky to simulate an outage | Tested under real load |
| Diagnosing a no-start | Hard without the tools | Battery, fuel and controller tested |
Keep the area clear and watch the exercise; leave the switch test and repairs to us.
Signs a generator needs attention now
- Warning light on the controller
A logged fault may stop it starting.
- Skipped weekly exercise
Battery, fuel or controller trouble.
- Battery older than three years
Batteries often fail without warning.
- No service in over a year
Oil and filters may be past due.
- Long outage season just ended
Hours may have hit the service interval.
- Transfer switch never tested
The weak point nobody has checked.
Generator service questions
At least once a year, sooner after a heavy outage season.
No, it does not test the transfer or the unit under full load.
Often two to three years; we test and replace before they fail.
Some warranties require documented maintenance; we leave a record.
Yes, and we check its sizing and wiring while we are there.
Usually the transfer switch or its controls; we test them.
We focus on standby units and the hookups for portables.
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Generator due for service?
Call any hour with the make, model and last service date.