What Happens if Lightning Strikes an Air Conditioner? | Ambient Edge (2024)

What Happens if Lightning Strikes an Air Conditioner? | Ambient Edge (1)

If lightning strikes your air conditioner during a storm, this could spell serious trouble for your electrical system. Think of a lightning strike like a car accident. Depending on the severity, you may notice a difference in your air conditioner right away after a lightning strike. Or the damage could be mild enough that it creeps up on you over the course of the next several months, so you don’t really know the true damage until long after the incident takes place.

No matter when you start to feel the effects of a lightning strike on your HVAC system, Ambient Edge can help. Call us at 888-628-5890 to schedule your service call, and if you decide to hire us for the repair, then your service call is absolutely free. So what do you have to lose? Call now!

Preventing Damage to Your Air Conditioner During a Storm

The best way to prevent damage to your air conditioner during a storm is simply to turn it off at the first sound of thunder. This may sound like the absolute worst suggestion when it’s unbearably hot outside, but it’s worth it to suffer for a little while to save your AC unit from severe damage.

While powering down your AC may not help the unit itself if it does end up getting struck, you may be able to enjoy damage control insofar as the lightning going through your air conditioning unit to your electrical system. Plus, the damage to the unit itself may be less severe, which may only result in a repair rather than a full-blown replacement.

You may also want to invest in surge protectors throughout your entire home, and surge suppressors between your appliances and your electrical outlets. These help to minimize the damage lightning can do and potentially save your investments from being totaled during a storm.

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How Lightning Can Damage an Air Conditioning Unit

Lightning is a powerful force that can wreak serious havoc on your air conditioner. There are several things that can happen as the result of lightning striking your AC unit. Some of these damages may include:

  • Capacitor: The capacitor is the most likely part to become damaged from a lightning strike, which can cause both minor and major subsequent issues, including the failure of your compressor.
  • Compressor: The compressor is the sneakiest part because it is one of the most expensive to fix, and it can take weeks or even months to detect any lightning-related problems with it.
  • Fuses: Lightning can damage your electrical lines, which can cause your breaker to trip and/or your fuses to burn.
  • Wires: Lightning can burn the wires in your electrical unit, causing it to fail.

Determining Whether Your Air Conditioner Suffered Lightning Damage

You’ve turned your AC unit off at the first sign of thunder, and now that the storm has passed, how would you even be able to tell if your unit suffered any damage during the storm?

The first thing you should do is make a note somewhere of the date and time of the storm. You’ll need this later if you have any future issues with your unit. If you observe any obvious damage, take pictures or videos of it for further documentation.

If there is no obvious damage, check the unit’s thermostat. If it’s off, try turning it back on. If that doesn’t work, then double-check your circuit breaker and attempt to replace the battery. Even if the circuit breakers are on, switch them off, then switch them back on again to reset them. If, after you replace the battery, the thermostat still won’t turn on, that’s when you’ll need to call a professional to come take a look at the problem.

If the thermostat does turn on, set the temperature to “fan” and make sure it comes on simultaneously with the condenser. If not, then you’ll need someone to take a look. Even if you don’t have any lightning damage, your unit may be suffering from an unrelated issue that still needs a professional to diagnose and fix.

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Was Your Air Conditioner Hit by Lightning? Don’t Worry – Call Ambient Edge for Help!

You don’t want to mess with Mother Nature, especially lightning. When you hear a storm is brewing, or if there’s an imminent storm in the forecast, switch off your air conditioner to try to mitigate any potential damage. If you’re too late, and/or if your unit suffers damage anyway, no problem. Ambient Edge can take a look and determine what your next step should be.

Give us a call at 888-628-5890, or send us a message on our website, and we’ll be glad to come over at our next available opportunity to check out your air conditioner. Sure, it’s no fun to turn off your air conditioner on a hot day, but the misery can last even longer if your unit goes on the fritz. Call Ambient Edge today and get a head-start on repairing your AC unit before the situation gets worse!

What Happens if Lightning Strikes an Air Conditioner? | Ambient Edge (2024)

FAQs

What Happens if Lightning Strikes an Air Conditioner? | Ambient Edge? ›

A single lightning strike can damage any number of A/C components, including the system controls, fuses, wires, capacitor, and compressor. At its worst, lightning damage can require extensive repair or full replacement of an air conditioning unit.

What happens if lightning strikes an air conditioner? ›

A lightning strike to your home can deliver well over a million volts of electricity, frying circuits and melting plugs and AC components. If the air conditioner is running, the power surge can travel throughout your HVAC system to damage other heating and cooling elements and even your thermostat.

How do you know if your AC unit was struck by lightning? ›

With confirmed lightning damage, there will always be visual evidence of arcing and charring of the equipment casing and/or housing. Additionally, multiple outdoor electrical components will be damaged, such as the contactor, capacitor, compressor, and fan motor.

Can an air conditioner not work after lightning strike? ›

A power surge can burn electrical wires within the air conditioner or within your home, which could lead to air conditioning unit failure. It's important to have your HVAC unit inspected following a lightning strike to avoid more expensive replacements down the road.

Should you turn off your air conditioner during a lightning storm? ›

Turn Off Your Air Conditioner

Around five billion joules of energy can be sent through the wiring even before the breaker is tripped. This can cause severe damage to your air conditioner if it's running. Your AC may not be useable after suffering damage from a lightning strike.

How do I protect my air conditioner from lightning? ›

An easy and free way to prevent damage to your air conditioner's compressor during a lightning storm, is to simply turn off the system at the thermostat. Your air conditioner is mostly susceptible to power surges when the unit is operating.

How do you reset an AC after a lightning strike? ›

Follow these 5 steps and you'll get your air back on in no time:
  1. Turn off your air conditioner with the thermostat. ...
  2. Turn your air conditioner off with the circuit breaker. ...
  3. Flip the AC back on at the circuit breaker. ...
  4. Wait 30 minutes. ...
  5. Turn the thermostat back on.

How do I fix my AC after a storm? ›

How to Reset Your AC after a Storm
  1. Turn Your AC off with the Thermostat. If your AC won't turn back on after a power outage, the first step you should take to reset your system is to turn your air conditioning off using your thermostat. ...
  2. Turn off Your Breaker. ...
  3. Turn on Your Breaker. ...
  4. Wait… ...
  5. Turn Your AC on with the Thermostat.
Aug 25, 2021

Can a storm damage an AC unit? ›

While modern air conditioning units are designed to withstand many weather conditions, they are not immune to damages caused by severe storms. Sometimes, signs of AC damage after a hurricane are evident. However, other times, the signs aren't as apparent and can cause permanent damage to the unit if not fixed in time.

How do I prove my insurance is damaged by lightning? ›

When submitting a claim for lightning damage, you must present strong and clear evidence that shows how the damage occurred. Char marks, holes, and other damage to the exterior of your house is some of the best evidence that lightning damaged your home.

Can power surge damage AC? ›

A power surge can damage an air conditioner or furnace, along with any device or appliance that uses electricity. And, unlike a coffee maker or another small device, those can cost a lot of money to replace. And, events like these, along with power outages, brownouts, and blackouts, don't discriminate.

Can storms damage air conditioners? ›

Wind, heavy rains, and flooding may happen, which could potentially cause damage to your home's air conditioner. Not all of this damage may be visible or apparent at first. And if not detected, it could lead to further damage or promote a hazardous situation.

Can lightning enter a house through a window? ›

Windows are hazardous for two reasons: wind generated during a thunderstorm can blow objects into the window, breaking it and causing glass to shatter and second, in older homes, in rare instances, lightning can come in cracks in the sides of windows.

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