The Effects of Hot Weather and Thunderstorms on Your Air Conditioner in Asheville, NC

Hot weather and thunderstorms are expected every summer in Western North Carolina. Your air conditioner is built to withstand heat, cold, rain, wind, and snow. Even though the outdoor unit is expected to last despite the various weather patterns, are there times when you should worry?

Hot Weather in Asheville

We have air conditioners because of the heat so shouldn’t they be designed to work in hot weather? Absolutely. But, that doesn’t mean it’s always easy. The hotter the weather and the cooler your desired indoor temperature, the harder your air conditioner works.

Air conditioners are designed to cool your house 15-20 degrees lower than outdoor temperatures. What happens when it’s 98 degrees outside and you want to keep your home at a comfortable 72 degrees? Your air conditioner works extra hard to make up the difference.

Here are some ways you can help your air conditioner run efficiently:

● Change air filters monthly
● Keep your unit clean and clear of limbs or other debris
● Have a maintenance plan
● Raise the temperature on your thermostat and use ceiling fans
● Try to keep the temperature in your home down by keeping blinds and curtains closed and avoid using heat-generating items.


Most of the time, a thunderstorm shouldn’t damage your system. The electrical components of your outdoor unit are protected so they won’t get wet.

High winds may dump debris onto your system and clog the unit. After a storm, look for debris on the outdoor unit and wipe away leaves or branches that might have landed on the unit.

If the rain from the thunderstorm was heavy enough to cause flooding, then this is cause for concern. If there is standing water around your unit, it’s best to have a professional evaluate your system. Turn off your air conditioner and call your licensed HVAC technician.

What about lightning? Could lightning strikes damage your air conditioner? Although the chance of this happening is rare, it’s certainly a possibility. Surge protectors can help prevent damage from thunderstorms. If you know lightning is in your area, you should consider turning off your air conditioner until the storm has passed.

Feel free to contact Sheer Comfort if you have further questions.