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How Do I Protect Electronics Before a Hurricane or Flood?

Last updated October 31, 2026

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The short answer

Unplug and Shut off Power

Before flooding occurs, turning off the main circuit breaker to cut power to your entire home is a critical safety step. This helps prevent electrical shock and short circuits. Then, unplug every electronic device from wall outlets, including TVs, computers, and kitchen appliances. Remember to unplug surge protectors from the wall as well, as they can fail if submerged.

For large, hardwired appliances like a furnace or built-in oven, you may need to shut off their individual breakers. If you are unsure, consult the appliance manual or an electrician. Knowing the location of your main shutoff is a good general practice. This process helps eliminate a major source of danger to your electronics and your household when flooding begins.

Move Electronics to High Ground

Relocate all portable electronics and valuable devices to the highest floor in your home. An interior closet on an upper level is often a good choice. Avoid placing items directly on the floor; use shelves, countertops, or tables. Elevation is your best defense against rising water, so aim for a spot well above any historic or predicted flood levels for your area.

For heavy items you cannot move, like a desktop computer or large stereo system, try to raise them onto concrete blocks or a sturdy, waterproof platform. Cover stationary electronics with heavy plastic sheeting, taped securely to create a moisture barrier. Remember that floodwater can seep through floors and walls, so distance from exterior walls provides an extra layer of protection.

  • Carry desktop computers and monitors upstairs.
  • Place documents and external hard drives in waterproof containers first.
  • Move small kitchen appliances from lower cabinets.
  • Take portable power tools and chargers to a safe location.
  • Relocate entertainment center components like game consoles and speakers.
  • Do not forget about electronics in basement workshops or laundry rooms.

Use Waterproof Containers and Bags

For maximum protection, seal smaller electronics and vital accessories in waterproof containers. Use heavy-duty plastic storage bins with locking, gasketed lids. You can also double-bag items in contractor-grade plastic bags, squeezing out excess air before sealing them tightly. This method is essential for items like phones, tablets, important cables, and data backups that are highly sensitive to moisture.

Adding moisture-absorbing silica gel packets inside these containers helps control humidity. You can often find these packets in new shoe boxes or electronics packaging. Avoid using cardboard boxes, as they disintegrate in water. Labeling your containers clearly can help you quickly locate essential items after the storm has passed and it is safe to return.

Prepare Large Appliances and Systems

Large appliances require specific steps. For your refrigerator, washer, and dryer, unplug them and consider moving them away from walls if possible. Shut off the water supply valves to your washing machine, dishwasher, and ice maker to prevent internal leaks. If you have a sump pump with battery backup, test it before the storm to ensure it is operational.

Consult your owner's manuals for guidance on preparing HVAC systems, water heaters, and security systems. Some systems may have a specific shutdown procedure. If you must leave these items in place, elevating them on bricks or specially designed appliance risers can help. An ounce of prevention here can prevent costly damage and complex restoration work later.

What to Do If Water Gets In

If floodwater contacts your electronics, do not plug them in or turn them on. Water and electricity create a severe shock hazard. Even if a device appears dry, internal components can corrode quickly. The priority is safety; do not attempt to open or repair any flooded appliance or device yourself before a professional assessment.

  • Never power on a wet device, it can short circuit or electrocute you.
  • Do not use a hair dryer or heat gun, as heat can warp components.
  • Remove batteries from devices like remote controls or flashlights immediately.
  • If safe, gently pat external surfaces with a dry, clean cloth.
  • Separate wet cords and cables to prevent cross-contamination.
  • Document damaged items with photos for a potential insurance claim. Policies vary, and your insurer decides what is covered.

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Frequently asked questions

Can I protect my computer if I can't move it upstairs?

If you cannot move it, elevate it as high as possible on a desk or stable platform. Wrap the entire tower and monitor in several layers of heavy plastic sheeting, sealing all seams with waterproof tape. Disconnect and remove the hard drive if you can do so safely, as it holds your most critical data.

Should I put electronics in the dishwasher or oven for safety?

No, you should never place electronics in an oven or dishwasher for protection. These appliances are not waterproof and are not designed for this purpose. An oven could be turned on by mistake, causing a fire. Always use dedicated, sealable plastic containers or bags stored in a high, interior location.

What about my TV mounted on the wall?

A wall-mounted TV is vulnerable. If you have time, carefully unmount it and move it to a safer location following the manufacturer's instructions. If you cannot remove it, consider adding a waterproof cover designed for electronics. At minimum, ensure it is unplugged from both the power outlet and any cable or satellite connections.

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