A standby generator is supposed to be invisible until you need it. The power goes out, the automatic transfer switch engages, and your home keeps running. That sequence depends entirely on whether the equipment has been maintained. In Kirkland, where Puget Sound Energy (PSE) serves the local grid and storm season runs October through March, a generator that sat unattended all spring and summer is exactly the kind of unit that fails when the first November storm rolls through.
We’ve been servicing generators for Kirkland homeowners since 2012, and the pattern is consistent: equipment that gets structured seasonal attention performs. Equipment that only gets attention when something seems wrong often doesn’t. What follows is the maintenance calendar we recommend to our customers, built around Kirkland’s actual weather window rather than generic advice.
Why Kirkland’s Storm Season Sets the Maintenance Clock
Kirkland’s most dangerous outage window runs November through January, when the most powerful storm systems move through Western Washington. PSE restoration during major events can take 24 hours or longer. Sometimes much longer. The November 2024 bomb cyclone knocked out power to more than 400,000 PSE customers at peak, with King County sustaining the heaviest damage. PSE described it as the worst storm the utility had seen in two decades. Prior events include an 8-day outage affecting 476,000 customers in January 2012 and a multi-day outage reaching 700,000 customers in December 2006.
The problem a poorly maintained generator creates is specific: it sits unused from spring through early fall, and components degrade quietly during that idle period. When the first major outage arrives, the unit fails at first demand. By then, there’s no time to source parts, no technician available on short notice, and no fallback. The maintenance schedule below treats each season as a defined task rather than optional upkeep.
Fall: The Pre-Season Checklist Before the First Storm
Fall is the most important maintenance window of the year. Scheduling professional service in September or early October leaves enough lead time to source replacement parts if anything turns up during the visit. Waiting until November means competing with every other homeowner who had the same idea after the first storm warning.
A complete fall professional service should cover:
- Oil and filter change
- Spark plug inspection and replacement if wear is evident
- Battery voltage test to confirm the starting system is reliable
- Coolant level check and condition assessment
- Fuel system inspection including lines, filters, and fuel condition
- Full load test to verify the unit performs under real operating demand
- Automatic transfer switch (ATS) verification to confirm the switch engages and transfers load correctly
That last item deserves emphasis. The automatic transfer switch is the component that detects a grid outage and transfers your home to generator power without manual intervention. A generator in perfect mechanical condition does nothing for you if the ATS fails to engage. ATS inspection isn’t something homeowners can self-assess. It requires a licensed electrician with the right test equipment.
What Homeowners Can Do Between Professional Visits
Professional service covers the technical work, but there are tasks any homeowner can handle between visits. Staying on top of these keeps the system in working condition without requiring a service call.
Regular Exercise Runs
Run your standby generator for 10 to 15 minutes under load every two to four weeks. This keeps internal components lubricated, circulates oil through the engine, and keeps the battery charged. Most modern standby generators can be programmed to run these exercise cycles automatically; confirm yours is configured to do so.
Clearance Maintenance
Keep a minimum of two to three feet of clearance around the generator housing on all sides. Leaves, debris, and overgrown vegetation block airflow and create fire risk. They also make technician access difficult during service visits, which matters when a repair is time-sensitive.
Oil Level Checks During Extended Outages
If your generator runs continuously during a winter outage, check the oil level every 24 hours of runtime. Don’t check while the unit is running or hot. Low oil during a multi-day event can cause engine damage that a warranty may not cover if the oil level wasn’t maintained.
Spring: Post-Season Service After a Hard Winter
For most Kirkland homeowners, an annual professional inspection covers both pre-season and post-season needs. But if your generator ran for 48 or more continuous hours during a winter outage, that runtime warrants a dedicated post-season inspection rather than waiting for the next annual cycle. Extended operation puts stress on components that were already at the end of a seasonal maintenance interval. Spring service should assess anything the winter put under pressure: spark plugs, air filter, fuel lines, and battery terminals for corrosion. Fuel that sat in the tank through an active storm season may also need attention, particularly if the generator didn’t run long enough to cycle through stored fuel completely.
This is also the right time to update your maintenance log. Many generator manufacturers require documented service records to support warranty claims. A log showing consistent professional service strengthens your position considerably if a component fails and you’re relying on warranty coverage to offset repair costs.
Summer: Standby Season Isn’t a Skip Season
Summer feels like a safe time to let generator maintenance slide. There’s no storm season, demand is low, and nothing seems urgent. That’s exactly what makes it easy to miss problems that accumulate quietly. Kirkland’s dry summers allow debris, vegetation encroachment, and even rodent nesting inside or around the generator enclosure to develop without the regular disturbance that comes during storm season. A quick visual inspection every few weeks takes five minutes and catches these issues before they become service calls.
Bi-monthly exercise runs remain important through summer. Fuel degrades when it sits unused, and battery discharge can accumulate over several months of low activity. A generator that’s been exercised consistently through summer arrives at fall service in better condition than one that sat idle for five months. A licensed electrician should also verify that all electrical connections remain secure at some point during the off-season. Vibration from test cycles and temperature swings between seasons can loosen terminals over time.
When to Call a Licensed Electrician Instead of Doing It Yourself
The maintenance tasks above are divided deliberately: what homeowners can handle themselves, and what requires a licensed electrician. Any work involving the automatic transfer switch, electrical panel connections, or wiring isn’t a homeowner task regardless of how comfortable you are with the mechanical side of the generator. This work affects how your home connects to the grid, and errors create serious safety risks.
Beyond scheduled service, these warning signs call for a professional rather than a wait-and-see approach:
- Failure to start on a test cycle
- Unusual noise or exhaust odor during operation
- A yellow maintenance indicator light on the control panel
- Inconsistent voltage output observed during a test run
Any of these conditions before October means you have time to address them. The same conditions discovered during a November storm (with PSE’s restoration timeline measured in hours or days) means your generator is unavailable exactly when it’s needed most.
Consistent seasonal maintenance is what separates a generator that performs when Kirkland’s grid goes down from one that fails silently during standby. If you’re not sure whether your system is ready for another storm season, or if it’s been more than a year since a licensed electrician looked at it, AMS Electric, Heating & Cooling offers free estimates and flexible scheduling including same-day and emergency appointments. Give us a call at (425) 537-4575 to get your system assessed before fall.