How Do I Prepare My Home Generator for Hurricane Season 2026?

Every year it's the same story. A tropical system forms in the Gulf. Home Depot sells out of portable generators in 48 hours. People pay double on Facebook Marketplace for a unit that won't power their AC. Then they sit in a 95-degree house for four days wondering why they didn't do this sooner.

Don't be that person. This guide gives you a month-by-month action plan so you're ready before the first storm even forms.

The Atlantic hurricane season officially runs from June 1 to November 30, with peak activity between mid-August and mid-October. According to NOAA's National Hurricane Center, this year is expected to be above-average, continuing a pattern of intensifying seasons driven by warmer ocean temperatures.

Why this matters for generators: when a hurricane makes landfall, power outages aren't measured in hours. They're measured in days and weeks. Hurricane Helene (2024) left 1.2 million customers without power in South Carolina alone. Hurricane Ida (2021) knocked out power to all of New Orleans for over two weeks. FEMA recommends every household in a hurricane zone have a backup power plan, and a standby generator is the most reliable option available.

Before. Not "the week before." Months before. Here's why: a standby generator installation takes 2-6 weeks from contract to power-on. That includes permitting, equipment ordering, scheduling, and the actual install. During season, installers in Florida, Texas, and Louisiana are booked solid. Lead times stretch to 8-12 weeks. Prices don't go up officially, but your negotiating power goes to zero.

Here's your timeline:

For hurricane preparedness, you want whole-house coverage. This isn't a winter ice storm where you lose power for 8 hours. Hurricanes knock out power for days, sometimes weeks. You need your AC running (it's going to be 90°F+ with no breeze when the storm passes), your refrigerator (food spoils in 4 hours without power), and your sump pump if you have one.

For most homes in the hurricane belt (1,500-2,500 sq ft), that means a 20-22 kW standby generator. Read our complete sizing guide for the exact math, or use our interactive calculator to get a recommendation based on your specific appliances. The most popular models in this range are the Generac Guardian 22 kW and the Kohler 20RCAL. Comparing brands? Check our Generac vs Kohler comparison or browse all generator brands we cover.

The American Red Cross recommends that households with elderly residents, infants, or anyone dependent on medical equipment treat backup power as a medical necessity, not a convenience. If someone in your home uses a CPAP, oxygen concentrator, or powered wheelchair, a standby generator isn't optional.

Already have a standby generator? Good. But "having" one isn't the same as having one that works when you need it. Generators that sit untested for months can fail right when the lights go out. Here's your pre-season maintenance checklist:

• ✓Change the oil and oil filter. If it's been 12+ months or 200+ hours, do it now.
• ✓Replace the air filter. A clogged filter reduces output and increases fuel consumption.
• ✓Check spark plugs. Replace if worn or carbon-fouled.
• ✓Inspect the battery. Load-test it or replace it every 3 years. A dead battery = no auto-start.
• ✓Verify coolant level (liquid-cooled units only).
• ✓Run a full-load transfer test. Flip your main breaker off and confirm the generator picks up the whole house.
• ✓Check that the weekly exercise schedule is active. The unit should run itself for 10-15 minutes every week.
• ✓Confirm propane tank is at least 75% full, or natural gas valve is open and unobstructed.
• ✓Clear vegetation, leaves, and debris from within 3 feet of the unit on all sides.

If you haven't done maintenance in over a year, call your installer for a professional service visit. Budget $200-$400. Cheap insurance against a $12,000 unit failing when it matters most.

During the storm: nothing. That's the whole point of a standby generator. It starts automatically, powers your home, and you stay inside. Monitor it through the app if you want, but don't go outside during the storm to check on it. Flying debris kills people. Your generator can handle rain and wind — it's built for it.

After the storm passes and conditions are safe, do a quick visual inspection. Look for debris leaning against the unit, standing water near the exhaust, or any visible damage to the enclosure. Check your oil level — a generator running continuously for 48+ hours will burn through oil faster than normal. And once utility power comes back and stays stable for a couple hours, your automatic transfer switch will switch you back to grid power on its own.

If the generator ran for more than 72 hours straight, schedule a professional service visit within a couple weeks. That's equivalent to a year of normal exercise cycles crammed into three days.

See all state-specific data on our state-by-state directory.

Now compare that to the cost of NOT having one: