A single power surge can take out a television, a computer, an HVAC control board, and every device plugged into a wall at the same time. When that happens, the first question most homeowners ask is whether insurance will pay for it. The answer is often yes, but it depends heavily on what caused the surge.

Here is a plain-English look at when homeowners insurance covers power surge damage, when it does not, and how to protect yourself either way.

Note: Stella Electric is an electrical contractor, not an insurance provider. The information below is general. Always confirm coverage details with your own insurer or agent, since policies vary.

How coverage usually works

Most standard homeowners policies include personal property coverage, which applies to your electronics, appliances, and other belongings. If a covered event causes a surge that damages those items, your personal property coverage may help pay to repair or replace them, up to your policy limit and minus your deductible.

The key phrase is covered event, also called a covered peril. Whether a surge is covered comes down to what triggered it.

Surges that are commonly covered

Power surges tied to a sudden, accidental, external cause are the ones most likely to be covered:

• Lightning strikes. A lightning strike to your home or a nearby transformer is one of the clearest covered perils on a standard policy.
• A vehicle striking a utility pole. If a crash near your home severs a power line or damages a transformer and sends a spike into your house, the resulting damage is often covered.
• A windstorm downing a power line. High winds that topple a utility line can push irregular voltage into your home, which is typically treated as a covered peril.

Some policies also address “artificially generated” surges, such as those caused by the utility company during maintenance or grid switching. Coverage for these varies, and some insurers specifically exclude damage to the internal components of electronics (like tubes and transistors) when the surge is artificially generated.

Surges that are usually not covered

Insurers generally deny claims for surges they consider preventable or the result of poor maintenance:

• Faulty or outdated wiring inside the home. A surge caused by aging or damaged wiring is often treated as a maintenance issue rather than a sudden accident.
• Overloaded circuits. Plugging too many high-draw devices into one circuit is seen as a condition the homeowner created.
• Gradual voltage fluctuations. Chronic under-voltage or over-voltage that slowly wears down electronics over weeks or months is not sudden or accidental.
• Normal wear and tear. Age-related failure of an appliance is not a covered surge event.

This is one more reason to keep your wiring and panel in good shape. Correcting known issues can help avoid the exact kinds of surges that insurance will not pay for.

Deductibles, limits, and how you are paid

Even when a surge is covered, two policy details affect what you actually receive:

• Deductible. You pay this amount before coverage kicks in, so small losses may fall below it.
• Coverage type. A replacement cost policy pays to replace items at today’s prices, while an actual cash value policy pays the depreciated value, which can be much less for older electronics.

Understanding which type of policy you have helps set realistic expectations before you file.

Consider equipment breakdown coverage

Because standard policies focus on sudden external events, many homeowners add equipment breakdown coverage. This optional endorsement can help with damage to appliances and electronics from a wider range of electrical failures, including some that a standard surge claim would not cover. Ask your insurer whether it makes sense for your home.

How to protect yourself before a surge happens

Insurance helps after the fact, but preventing damage is better than filing a claim. A few steps go a long way:

• Install whole-home surge protection. A surge protective device at the panel helps defend your entire home against common surges.
• Use plug-in surge strips for sensitive electronics as a second layer.
• Keep wiring and the panel current. Addressing outdated wiring and overloaded circuits reduces internally generated surges.
• Document your electronics. Photos and receipts make any future claim smoother.

What to do if a surge damages your home

If you experience surge damage, document everything with photos and video, make a list of the affected items, and contact your insurer to ask about the claims process and whether the cause is covered. If the surge points to a wiring or panel problem, have a licensed electrician inspect the system so the underlying issue does not cause another loss.