Charleston, SC HVAC Service & Installation

If your air conditioner is running but your home still feels hot and muggy, you’re not alone. Charleston’s high heat and coastal humidity can put a major strain on your cooling system—and one issue we see time and time again is the #1 reason your AC isn’t cooling properly: a dirty or clogged air filter. Why Your Air Filter Matters More Than You Think Your AC system relies on proper airflow to function efficiently. When your air filter gets clogged with dust, pollen, pet hair, or other debris, it blocks that airflow—making your system work harder while cooling less effectively. In Charleston, this problem is even more common during the summer months when: Pollen levels are high Pet shedding increases indoors Humidity causes filters to trap more moisture and debris AC systems are running almost nonstop A dirty filter doesn’t just reduce cooling—it can also cause your coils to freeze, reduce energy efficiency, and even shorten the life of your system. Signs Your Filter Is the Problem Not sure if your filter is the culprit? Here are a few red flags to watch for: Warm air blowing from vents Weak airflow in certain rooms Higher-than-usual energy bills AC running constantly but not reaching set temperature Increased indoor humidity How Often Should You Change It? In Charleston’s climate, we recommend checking your filter once a month during the peak cooling season (May through September). You may need to change it more frequently if: You have pets You live near construction or marsh areas You suffer from allergies Your AC runs constantly Don’t Let a Simple Fix Turn Into a Costly Repair At Terrace Heating & Air, we see it all the time—a customer calls us for what seems like a serious AC problem, and it turns out the solution is as easy as replacing the air filter. That’s why routine maintenance is key to keeping your system running efficiently all summer long. Need Help With Your Cooling System in Charleston? If your AC still isn’t cooling after changing the filter, there could be a more complex issue—like low refrigerant, dirty coils, or a failing compressor. The experts at Terrace Heating & Air are here to help with fast, friendly service across the Charleston area. Contact us today to schedule a service visit or sign up for a preventive maintenance plan—and keep your cool all summer long.

As Charleston’s spring temperatures start to rise, it’s the perfect time to make sure your air conditioning system is ready to handle the hot, humid summer ahead. At Terrace Heating & Air, we know how important a reliable and efficient AC system is for keeping your home cool and comfortable during those sticky Lowcountry months. A little spring maintenance now can prevent breakdowns later—and save you money on energy bills. Why Spring AC Maintenance Matters in Charleston Charleston’s summer humidity puts a lot of stress on your air conditioner. Without proper care, your system can lose efficiency, struggle to cool your home, or even fail when you need it most. Scheduling spring maintenance ensures your system is clean, tuned, and ready to keep up with the demands of a Charleston summer. Top Spring Maintenance Tips from Our Charleston HVAC Experts Here are a few simple but important steps to get your AC system in top shape: 1. Replace or Clean Air Filters Dirty filters reduce airflow and make your system work harder. We recommend changing your air filter at least every 1-3 months—especially in the spring when pollen levels are high in Charleston. 2. Check and Clean Your Outdoor Unit Leaves, dirt, and debris can block airflow to your outdoor condenser unit. Make sure the area around the unit is clear and gently hose off any buildup to improve efficiency. 3. Inspect Thermostat Settings Now’s a great time to test your thermostat and program it for energy savings. Consider upgrading to a smart thermostat for better control and efficiency during Charleston’s fluctuating spring and summer temps. 4. Listen for Strange Noises Unusual sounds like rattling, grinding, or squealing can signal loose parts or wear and tear. Don’t ignore them—addressing these early can help prevent costly repairs later. 5. Schedule a Professional AC Tune-Up The best way to ensure your system is ready for summer? Schedule a professional inspection and tune-up with Terrace Heating & Air. Our skilled Charleston HVAC technicians will check refrigerant levels, tighten electrical connections, clean coils, and ensure everything is operating at peak performance. Stay Cool All Summer with Terrace Heating & Air Don’t wait until the first heat wave hits—get ahead of the Charleston summer with a spring AC maintenance appointment. Regular maintenance not only keeps your system running efficiently but also extends its lifespan and reduces the risk of emergency repairs. Contact Terrace Heating & Air today to book your spring tune-up and make sure your air conditioner is ready to take on the summer heat! Check out our air conditioning service page to learn more about how we can keep you cool and comfortable this summer.