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Salt Air and AC Units

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  What Homeowners Should Know About Coastal Corrosion If you’ve lived in Mount Pleasant long enough, you’ve probably seen what salt air can do. And unfortunately, your air conditioner isn’t immune. The same salty breeze that makes life near the marsh so refreshing also carries microscopic salt particles that cling to metal surfaces, including your AC’s coils and fins. Over time, that buildup can corrode key components, reduce efficiency, and shorten your system’s lifespan. At Dunes Heating and Air Conditioning, we service hundreds of homes across Mount Pleasant, Sullivan’s Island, and Isle of Palms, and corrosion is one of the most common (and preventable) issues we see in coastal systems. In this blog, our Mount Pleasant AC repair specialists will explore what every Lowcountry homeowner should know. Why Salt Air Is So Hard on AC Units Salt is naturally corrosive. When carried through the air, it settles on your outdoor condenser unit—the large metal box that pulls heat from your h...
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Five Signs Your AC Repair Shouldn’t Wait

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In Charleston’s heat and humidity, a struggling AC isn’t just inconvenient — it can affect your comfort, indoor air quality, and even your home. When something seems off, it can be tempting to wait and see if it gets better on its own. But some warning signs mean it’s time to call for professional  AC Repair  right away. At  Dunes Heating and Air Conditioning , we want homeowners to know when a quick call can prevent a bigger, more expensive breakdown later. Here are five signs your AC repair shouldn’t wait. 1. Warm Air Instead of Cool Air If your AC is running but the air coming from your vents feels warm or barely cool, that’s a clear red flag . Common causes include: Low refrigerant or a refrigerant leak Frozen or dirty evaporator coils Failing compressor or other major component issues You may notice your AC system running longer than usual, but your home never quite reaches the set temperature. When that happens, your AC is working harder, using more energy, and wear...
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