U.S. Home Energy & Maintenance Guide

Before a Hurricane: A Home Systems Check for Roof, Drainage, HVAC, Power, and Flooding

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Last reviewed: August 27, 2026. Hurricane, flood, utility, insurance, building-code, permit, and evacuation requirements vary by location and property.

A hurricane is not one problem with one home-maintenance checklist. Wind looks for a weak opening in the roof, garage door, windows, or exterior doors. Rain tests roof details, wall penetrations, grading, and drainage. Storm surge and inland flooding can reach electrical and mechanical equipment. A power outage introduces a different set of risks.

The useful time to sort those systems is before a storm is close. Once tropical-storm-force winds arrive, emergency managers want evacuation complete and people sheltered—not on ladders, roofs, or in yards moving equipment.

Start with the evacuation decision, not the building

Find your local evacuation zone and know whether storm surge, river flooding, flash flooding, wind, or more than one hazard applies to the address. The National Hurricane Center notes that storm surge can travel miles inland, while heavy rain can produce destructive flooding far from the coast. A flood map, hurricane category, or distance from the shoreline should not be used alone to decide whether to leave.

Follow local emergency management instructions. If an evacuation order is issued, protecting the house becomes secondary. Manufactured homes and travel trailers are not safe shelters in high winds, heavy rain, or flooding when officials direct occupants to sturdier shelter.

Inspect the water path from roof to street

From the ground or another safe location, look for missing or damaged roof covering, loose flashing, open penetrations, deteriorated sealant, sagging gutters, and downspouts that discharge beside the foundation. From the attic, if it is safely accessible, look for old water staining, daylight at unintended openings, loose roof sheathing, and fasteners that missed framing. A stain does not identify the active leak by itself, but it gives a roofer a place to investigate.

Clean gutters and storm drains before the forecast deteriorates. Direct roof runoff away from the foundation without sending it onto a neighbor’s property or into a prohibited connection. Check that grading has not settled toward the house and that basement stairwells, window wells, crawl-space entries, and low doors are not the easiest route for surface water.

A sump pump needs a discharge path that remains usable during heavy rain. Test it with the manufacturer’s method and confirm that the check valve, cover, float, and discharge are functional. A battery backup can help during an outage, but its run time depends on battery condition and how often the pump cycles. It is not a substitute for correcting exterior water entry.

Wind protection has to match the opening

FEMA identifies windows, exterior doors, double-entry doors, and garage doors as common weak points. Use shutters, impact-rated products, or an approved panel system designed for the specific opening and local wind requirements. Tape on glass is not a structural wind protection system.

A wide garage door can fail under wind pressure and create a large opening into the building. Check the door label and installation documents before assuming it is wind-rated. Manufacturer-approved bracing or a code-compliant replacement may be appropriate, but improvised lumber placed at the last minute can interfere with the track, springs, or safe operation.

Bring outdoor furniture, grills, planters, tools, toys, and trash containers inside or secure them using an appropriate method. Trim dead, damaged, or rotting limbs well before a warning. Tree removal, roof work, shutters, garage-door reinforcement, and structural connections belong with qualified contractors and local permit requirements—not storm-day improvisation.

Know which equipment can flood

Outdoor heat pumps and air-conditioner condensers, service panels, meters, fuel tanks, generators, water heaters, furnaces, boilers, and ductwork can all be damaged by water. FEMA guidance treats elevation, relocation, anchoring, and component protection as design work tied to the site’s flood elevation, flood loads, clearances, utilities, and code.

Do not stack an outdoor condenser on loose blocks or disconnect fuel, refrigerant, electrical, or plumbing lines to move equipment when a storm is approaching. If the property has a recurring flood risk, have a licensed professional design a permanent platform, anchoring system, or relocation. The plan must also preserve service access, airflow, structural capacity, and manufacturer requirements.

Photograph equipment nameplates, panels, shutoffs, and completed mitigation. Keep copies with insurance and contractor records somewhere that will remain available if the home cannot be entered.

Prepare the HVAC system without creating a new hazard

Replace a severely loaded air filter before the storm if replacement is already due; a power outage is a poor time to discover that airflow was marginal. Clear ordinary vegetation and loose debris from the outdoor unit while power is safely off, but do not remove required guards or alter refrigerant piping.

There is no universal instruction to switch off every HVAC system before landfall. Utility conditions, flooding risk, surge protection, equipment design, and local instructions vary. Follow the utility, emergency officials, and equipment manufacturer. If an outdoor unit or any part of the HVAC system is flooded, do not restart it to dry the house. EPA and CDC recommend professional inspection and cleaning because contaminated ducts or equipment can distribute mold and debris.

A portable generator is outdoor equipment

CDC says a portable generator, pressure washer, or other gasoline engine must not operate inside a home, basement, garage, carport, porch, or other enclosed or partly enclosed area. Keep it outdoors at least 20 feet from every door, window, and vent. Open garage doors do not make a garage safe for generator operation.

Use battery-powered or battery-backup carbon monoxide alarms and follow the generator’s instructions for rain protection, fueling, grounding, cord capacity, and load. Never connect a portable generator directly to household wiring through a receptacle. A permanent home connection needs approved transfer equipment installed under electrical code so power cannot backfeed utility lines.

List the loads that actually matter—refrigeration, a sump pump, communications, medical needs, selected lighting, or a properly connected HVAC load—and compare starting as well as running power. A generator nameplate does not guarantee that every circuit can operate at once.

Use the final 48 hours for reversible work

  • Install the tested shutter or panel system while conditions are still safe.
  • Move outdoor objects and vehicles according to the household plan.
  • Charge phones, power banks, tool batteries, and medical-device backups.
  • Cool the home normally before an expected outage without setting equipment outside its normal operating limits.
  • Confirm medications, water, food, flashlights, weather alerts, evacuation supplies, and pet needs.
  • Put documents and photographs in protected storage and confirm how to contact the insurer.
  • Know the safe location of electrical, gas, and water shutoffs, but operate them only under local and utility guidance.

Do not climb onto the roof, prune trees, handle shutters, or move heavy equipment once winds or lightning make the work unsafe.

Flood insurance is not a storm-week purchase

The National Flood Insurance Program states that most homeowners and renters insurance does not cover flood damage. NFIP coverage generally begins 30 days after purchase, with specific exceptions. Review building and contents coverage, deductibles, exclusions, private alternatives, wind coverage, and temporary-living provisions with a licensed insurance professional before a storm is forming.

Keep a current room-by-room inventory and images of the roof, exterior, mechanical equipment, electrical panel, and major contents. These records do not prevent damage, but they can establish pre-storm condition.

Reenter as if the utilities are unsafe

Wait for authorities to say the area is safe. Do not enter a visibly unstable building or approach downed lines. If standing water blocks access to the main electrical disconnect, call an electrician rather than entering the water. CDC advises having the electrical system checked before power is restored after flooding.

If gas is smelled or a leak is suspected, leave immediately and contact the gas utility or emergency services from a safe location. Do not operate switches or create a spark. Wet electrical devices, breakers, receptacles, fuel controls, appliances, HVAC equipment, and water heaters need qualified evaluation; drying the outside does not establish that internal components are safe.

Document damage before moving items when it is safe to do so. If floodwater entered the house, begin a safe drying plan quickly, but do not use contaminated HVAC equipment. EPA notes that an unaffected, working system may assist drying, although most systems cannot dry a severely wet home by themselves. See our home energy resilience guide for broader outage and flood planning, and the cleaner-air room guide for indoor filtration during smoke events.

The most useful project is the one completed before the forecast

Permanent roof connections, approved opening protection, garage-door reinforcement, better drainage, elevated utilities, a transfer switch, and flood coverage cannot be added safely in the final hours. Use the quiet part of the season to turn inspection findings into permitted work, keep the documentation, and verify the result. When a storm does approach, the remaining tasks should be securing known equipment, loading supplies, and following the evacuation plan.

This article provides general educational information, not emergency-response, insurance, legal, structural, electrical, fuel-gas, or HVAC advice. Follow local officials and utilities. Use qualified, licensed professionals for inspections, retrofits, repairs, transfer equipment, flooded systems, and permitted work.

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