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  • 13135 SW 122nd Ave
    Miami, FL 33186
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A/C Installation - Repair

Is My AC Safe During a Storm?

Have you ever wondered if a downpour will negatively impact your AC unit? If so, you are not alone. A deluge of rain can damage many objects, so why should your AC be any different? Well, we have good news for you. Your AC’s condenser, the outside portion that most of us are most acutely aware of, is made to withstand the harshest of conditions and should handle the rain just fine.

It is perfectly safe to run your AC during a rain storm. Rain will not interfere with the outdoor unit’s ability to function correctly. In fact, using your AC on warm, rainy days can keep your home more comfortable — your indoor evaporator coils extract moisture and lower humidity levels, which improves comfort levels indoors. Now if rain storms result in flooding and you have standing water around your unit, you should stop using the system, and turn off power at your home’s electrical panel to prevent damage. Have your unit inspected by an HVAC professional before using it after flooding.

Is It Ok To Run Your Air Conditioner During A Thunderstorm?

The hot, humid summer conditions that make you want to crank the air conditioner also create the ideal conditions for thunderstorms. Operating your air conditioner during a thunderstorm can lead to some damage to your unit, so it’s best to shut it down when the weather starts acting up. Luckily, humidity and temperature drops when storms roll in, so you’ll get some relief even though your air conditioner is not in use.

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Why is it important to turn off your air conditioner during a thunderstorm?

Lightning Strikes - While lightning strikes to the home are rare, they are an undeniable possibility during a storm. The electrical service drop, where your utility lines connect to the house on the roof, is a very vulnerable point for lightning strikes. If lightning strikes at this point, it can cause a significant power surge through your home’s electrical system. As much as five billion joules of energy can be sent through your home’s wiring before the breakers are triggered to trip — in this fraction of a second, the surge can cause serious damage to your air conditioner if it is in operation.

Air Conditioner Damage - The damage caused by a lightning strike can render your air conditioner unusable. It can melt the plug to your unit. The air conditioner’s control panel is full of sensitive electrical circuitry which can be damaged, requiring an extensive repair or even replacement of the entire unit. The system’s controls can be corrupted to the entire heating and cooling system if a lighting strike occurs when the system is operating.

What about debris?

If the wind is swirling, chances are debris can be a big problem for your HVAC system. Living in Florida means you know the power of hurricane force winds. Most of us know the damage wind can cause. BEFORE the storm, make sure the area surrounding your AC is free from low hanging branches, limbs, yard waste, etc. You do not want any of this flying into your cooling system.

How Do I Protect My Air Conditioner?

Unfortunately, surge protectors don’t provide the level of protection needed against a surge caused by a lightning strike, so plugging your AC into one won’t have the benefits you expect. If you happen to live in the area with a high occurrence of lightning strikes, you can protect your air conditioner by installing a protection system. Using lightning rods, conductors and ground rods, you’ll be creating an alternate path for lightning to reach the ground so lightning won’t travel through the home’s electrical system. These systems aren’t 100 percent effective at preventing surges, so it is best to still keep your air conditioner off when storms pop up.