Hurricane Season Electrical Prep: What's Actually Worth Doing Before the Next One Hits

# Hurricane Season Electrical Prep: What's Actually Worth Doing Before the Next One Hits

Bottom line first: Most homeowners wait until the cone-of-uncertainty is on TV, then panic-buy a generator that won't run their AC and hire the first electrician dumb enough to answer the phone during landfall prep. Do not be that guy. August is your window — this is when you lock down the stuff that keeps your house livable when the grid goes dark for a week.

I've done enough post-storm service calls to tell you the three things that actually matter: whether your AC circuit can handle startup load on a generator, whether that generator is actually ready to run (spoiler: it's not), and whether the transfer setup makes sense for your real loads. The rest is noise.

AC Load Is Where Amateurs Faceplant

Your central air is the single biggest inrush problem on a backup power system. Compressor startup draws 3–4× running amps for a couple seconds. On grid power, no one cares. On a portable or standby generator with tight margins, that surge either kicks the breaker or browns out every other circuit in the house.

I've seen brand-new 10 kW portables fail to start a 3-ton AC because the homeowner's electrician didn't account for locked-rotor current. The generator had the watts. It didn't have the balls for that first half-second. You need either a unit with real surge capacity (18–20 kW transient on a quality frame) or you need a soft-start module on the compressor. The module costs $350 and cuts inrush by 60%. That's the move if you're stuck with an undersized genset and can't afford to replace it before September.

If you're spec'ing a new standby system this summer — and yes, this is the summer to do it, before six weeks of lead time turns into six months when the forecasts get serious — tell the contractor your AC is non-negotiable. I don't care if you can live without the dryer or the range. You will not make it through a week in Florida or coastal Texas heat without climate control. Size the system to handle full HVAC under load or don't bother.

Also: if your air handler is 15 years old and you're planning a generator install anyway, replace the handler first. Older blowers pull more current, and you don't want to find out mid-August that your "new" genset can't handle your "old" air.

Generator Commissioning Is Not Optional

This one drives me nuts every season.

People drop $8K on a Generac or Kohler whole-house rig, the installer fires it up once to prove it cranks, and that's the last time it runs until the storm. A year later, when it matters, the thing refuses to take load or stalls out after 30 seconds because the carb is gummed or the battery's cooked or the controller firmware never got updated and now it faults on high temp.

Real generator commissioning means load testing under operating temp. You run the unit at 50%, 75%, and full rated output for 30–60 minutes each step, watching voltage regulation, frequency stability, and exhaust temp. If it can't hold 240V ±5% at 80% load without the governor hunting, you've got a problem. Better to know now than when you've got $600 of food thawing in the fridge.

If you don't have access to a proper load bank (and you don't — they're commercial rental gear), you can rough it with space heaters, a hot water heater on max, the AC, the dryer, and every light in the house. Not lab-grade, but it'll smoke out a weak unit. The goal is just field readiness and confidence that the generator will accept duty without unstable response, per the actual commissioning workflow guys use when they're not cutting corners.

For portables, the drill is simpler but no less important: quarterly exercise runs under real household load. Ten minutes once every three months. Mark it on the calendar or you won't do it. Use non-ethanol fuel or treat it with Sta-bil if you're stuck with pump gas. Drain the carb if it's sitting more than a month. I have pulled more generators off front porches mid-storm because someone's nephew said "it ran fine last year" and didn't check. It did not run fine.

Transfer Panel and Load Management

If you're on a portable and an interlock or manual transfer switch, you need to actually think about what you're running and when.

Most houses pull 20–30 kW peak if everything's on. Your portable is 7.5 or maybe 10 kW if you spent real money. That means load shedding. Central AC, fridge, a couple lights, TV, maybe the well pump if you're rural — that's your budget. Everything else gets shut off at the breaker before you flip over to generator power, or you're going to overload and trip.

Standby systems with automatic transfer and load management controllers handle this better, but only if the electrician programmed the shedding logic correctly during install. I've seen plenty of ATSs that'll try to start the AC, the water heater, and the range all at once on cold start because no one told the controller to stage the loads with a 10-second delay between contactors. It's a five-minute programming fix. Make sure it was done.

For ceiling fan circuits — since that's on everyone's mind this summer while the AC is fighting 95° ambients — treat them as continuous load when you're sizing the system. They're only 75W apiece, but if you've got six of them running 24/7 because you're trying to ease the load on the air handler, that's a half-kilowatt that has to come from somewhere. Not a deal-breaker, just something to add to the math.

What About the Actual House Wiring?

Most of the prep here isn't new electrical work. It's making sure what you have can handle the loads you're about to lean on hard for a week straight.

Walk your panel. Any breakers hot to the touch under normal operation, replace them now. Any backstabbed receptacles on circuits you care about (fridge, freezer, medical equipment), pull them and put the conductors under screw terminals where they belong. Backstabs fail under sustained current, and you're about to sustain the hell out of them.

If your main panel is outdoors and accessible to wind-driven rain, check the service entrance seal and the knockouts. I've seen panels fill with water during a bad storm and trip everything. Not code-compliant, but it happens in older resi work. A tube of silicone and ten minutes fixes it.

AFCI breakers in bedrooms and living areas: they're code now, and they'll save your ass if a surge or a failing appliance tries to arc-fault during an outage. But they can also be fragile and prone to nuisance trips when the power's dirty — which it will be on a generator. If you've got critical circuits (medical stuff, sump, fridge), consider putting those on plain breakers if local code allows it, or at least on AFCI/GFCI combo units that are less sensitive to generator waveform noise.

Gear That's Actually Useful Right Now

The cordless tool releases this month don't mean much for hurricane prep, but if you're doing any pre-storm hardening work — reinforcing garage door bracing, adding storm shutters, mounting a generator pad — you're probably already on 18V or 20V.

Makita's new 40V tower light (20,000 lumens, ridiculous) might actually be worth it if you're going to spend a week working in the dark after landfall, either on your own repairs or helping neighbors. That's a legit area light that'll run six hours on a pair of 5 Ah packs. Not essential, but if you're a contractor who gets called out for post-storm work every year, it's a hell of a lot better than four shitty halogen sticks on a chain.

For the rest of it: make sure your cordless impacts, drills, and saws are charged and ready. Have spare batteries. Have a way to charge them if you're on generator power for days — a small inverter genny or a 12V DC car adapter if your platform supports it. You will need to cut plywood, pull screws, and fix things. Dead batteries when the hardware store's closed for a week is not a good time.

The Stuff No One Wants to Hear

This isn't the season to discover your homeowner's policy has a wind/hail exclusion or that your deductible is 5% of dwelling value. That's not electrical, but it's adjacent — because if you're going to spend money hardening the electrical system, make sure you're also insured for the actual structure when it takes a hit.

Also: if your service entrance is overhead and you've got big trees near the drop, this is the year to get them trimmed or dropped. I've seen more houses lose power from a falling oak than from grid failure. Your generator is useless if the tree takes out the weatherhead and the meter can.

If you're in a flood zone, your transfer switch and main panel need to be above projected storm surge. If they're not, you're going to have a very expensive post-storm rewire when salt water gets in. Talk to your electrician now, not after.

Is It Worth It?

Depends what you're protecting.

If you're coastal, if you've been through this before, if losing power for a week means losing your mind or your freezer full of meat or your ability to work from home, yes — a real standby system with proper commissioning and load management is worth it. It's $10–15K installed for a decent mid-size unit, and it'll run for 20 years if you maintain it.

If you're inland, if storms are rare, if you can bug out to a hotel when the forecast gets real, maybe a portable and a manual transfer switch is enough. $2,500 all-in, and it'll get you through most situations that aren't total destruction.

But if you do nothing, or you half-ass it with a box-store generator and no transfer, no testing, no plan — that's the worst option. You'll spend the money in a panic, it won't work right, and you'll be back on the phone with an electrician who's booked solid for three months and charging emergency rates.

August is the window. September, you're late.

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