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What Happens to Appliances After a Lightning Strike?

Last updated October 26, 2026

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The short answer

How Lightning Damages Appliances

Lightning doesn't need to hit your house directly to cause damage. A nearby strike can send a voltage surge through power lines, and that surge travels into your home's electrical system. Appliances plugged into outlets receive that burst of energy, which can overwhelm their internal components.

The surge can burn out circuit boards, melt wiring insulation, or damage motors and compressors. Refrigerators, washers, dryers, and air conditioners are especially vulnerable because they have complex electronics. Even smaller devices like microwaves and televisions can suffer. The damage may be immediate or show up weeks later as strange noises or reduced performance.

Signs Your Appliances Were Struck

After a storm, check for obvious clues. Tripped circuit breakers or blown fuses are a common first sign. You might smell a burnt plastic or metallic odor near outlets or appliances. Some devices may be completely dead, while others flicker or run erratically.

Look at surge protectors and power strips. If they show signs of melting or scorching, that's a strong indicator of a surge. Also, listen for buzzing or humming sounds from appliances that were quiet before. If you notice any of these, unplug the affected units and avoid using them until they've been checked by a professional.

  • Tripped breakers or blown fuses
  • Burnt smell near outlets or appliances
  • Dead or flickering devices
  • Melting or scorching on surge protectors
  • Unusual buzzing or humming from motors

Why Water Damage Can Follow

Lightning strikes can also cause physical damage to your home's structure, including roof penetrations or cracked pipes. If a strike hits your roof or a vent, it can create a path for rainwater to enter. That water can then damage appliances, drywall, and flooring.

In areas with hot summers and frequent thunderstorms, the risk of both lightning and water intrusion is real. If water gets into your walls or under appliances, it can lead to mold growth and further electrical hazards. Addressing water damage promptly is key to protecting your home and your appliances.

Steps to Take Right After a Strike

First, ensure your safety. If you see sparks, smoke, or smell gas, leave the house and call emergency services. Otherwise, turn off the main power at the breaker box if it's safe to do so. Unplug all appliances that might have been affected, especially those that were on during the strike.

Do not turn on appliances that show signs of damage. Document the condition of each device with photos and notes; this can help if you decide to file an insurance claim. Check your policy to understand what's covered. Policies vary, and your insurer decides what is covered. Keep records of any repairs or replacements.

When to Call Local Pros

If you suspect water damage from the strike, such as wet walls, soaked carpets, or standing water, it's time to bring in local water damage pros. They can assess the extent of the moisture and begin drying and cleanup. Water that sits too long can warp floors and breed mold.

The pros use specialized equipment to extract water and dry out affected areas. They can also help with drywall repair, flooring removal, and other restoration work. If you live in Tulsa, keep the number of a trusted water damage service handy. Acting quickly can prevent more extensive and costly damage.

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Frequently asked questions

Can a lightning strike damage appliances that are turned off?

Yes. Appliances that are off but still plugged in are still connected to your home's electrical system. A surge can travel through the wiring and damage their internal components, even if they weren't running at the time. Unplugging devices during a storm is the safest way to protect them.

Should I replace all my appliances after a lightning strike?

Not necessarily. Some appliances may survive with minor damage, while others are beyond repair. Have a professional electrician test each unit before you decide. They can check for internal damage and advise whether repair or replacement makes more sense. Document everything for your insurance claim.

Will my homeowner's insurance cover lightning damage to appliances?

It depends on your specific policy. Many standard policies cover lightning damage, but you need to check your coverage. Policies vary, and your insurer decides what is covered. Contact your insurance company as soon as possible to report the damage and ask about your coverage for appliances and any water damage.

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