A prolonged outage on Hawai'i Island after Hurricane Lala turned one household's standby generator into a practical test of whether backup power can keep a home going for several days.
For homeowners weighing the upfront cost of a generator, the family's experience pointed to a simple takeaway: Backup power can carry a home through, but only if upkeep stays on the checklist.
Here's what to know
In a post shared on Reddit, a homeowner on Hawai'i Island said a year-old Generac 22-kilowatt unit was keeping a three-person household running while the grid was down.
The OP said, "Our Generac 22KW/999 Guard-No T/sw AL has been running perfectly."
The home's 250-gallon propane tank was a little above 70% full, and the Reddit updates suggested it was using about 5% over a little more than a day.
A user quickly raised one maintenance concern: "Well, it needs to be shut down every 24 hours to check the oil level."
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The OP replied, "Wow, thanks for that advice. I will do that."
The check turned out to matter.
The homeowner reported, "Had to add a little oil but the generator is back working again perfectly!" and said power returned, with the propane tank down to 30%.
More background
For this family, the generator kept the home functional for days.
One lesson from the thread was that a generator's usefulness is about more than how long it can run. During an extended outage, oil checks, fuel planning, and routine service all affect whether backup power remains reliable when it matters.
One user said: "$25 oil and filter parts every 200 hrs is cheap insurance. Vs a $5000 broken down lawn ornament." The commenter added, "Outages can last 10 min or ten days you never know."
The discussion offered a rough operating snapshot. Here, a three-person household got through a multiday outage on a partly filled 250-gallon propane tank, though actual fuel use will vary depending on electrical demand, weather, and the generator model.
What can be done?
Before storm season, standby generator owners should understand their maintenance schedule. In this case, Redditors repeatedly stressed 24-hour oil checks during extended operation, along with keeping oil, filters, and plugs on hand.
Fuel planning matters as well.
One user asked the homeowner, "What's your plan for running out of fuel? Do you have a way to get more on demand?"
It is a question best answered before an outage, not during one. If resupply is uncertain, rationing power use may help stretch fuel supplies.
Amid heavy rain, the OP said they and their wife reviewed the manual and watched a video to learn how to safely check the oil.
The homeowner said, "Our propane was down to 30 %, so I was up at midnight thinking of ways we could conserve more, and suddenly the grid-power came back. We have a Generac guy coming to service the tank tomorrow (oil, filter, plugs, etc) … Generacs are wonderful."
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