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Home of the $0 FREE Service Call Club | 0% Interest for 24 Months

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Late summer in Charleston usually means high humidity and warm afternoons that seem to stretch well into September. Homeowners count on their HVAC systems to keep things cool and comfortable while managing the last wave of summer heat. But heavy usage during the earlier months can leave these systems strained just when you need them to perform their best. That’s why late summer is a smart time to check whether everything is working as it should.

Staying on top of seasonal care tasks can help prevent surprise breakdowns and keep energy bills steady. Making a few updates now can set you up for peace of mind through the rest of the season and help you start the cooler months ahead on the right foot. These simple steps aren’t time-consuming, but they go a long way in keeping your system strong and your home comfortable.

Ensure Proper Airflow

Airflow is one of the most overlooked parts of keeping an HVAC system running efficiently. Without it, your system works harder than it needs to, which can wear down parts quickly and affect your comfort. Late summer is a great time to do a quick airflow reset around your home.

Start by checking your air filters. After months of running the AC daily, filters trap dust, pollen, pet hair, and anything else floating around inside. A clogged filter will block airflow and push your system to do more work than it has to. Replacing a dirty filter with a new one is one of the easiest ways to help your HVAC system breathe.

Next, take a few minutes to inspect your air vents. Make sure they’re not covered by furniture, rugs, or clutter. Sometimes a bookshelf or couch gets moved and unintentionally blocks a vent. That can mess with airflow from room to room. If vents look dusty or dirty, remove the cover and give them a gentle wipe-down or vacuum to keep air flowing cleanly.

Here’s a simple checklist to get your airflow back on track:

– Replace or clean your HVAC filter every 1 to 3 months

– Vacuum and wipe down vents and registers

– Keep furniture or objects from covering vent openings

– Take a quick look at your return vents to ensure they aren’t blocked

– If you notice uneven cooling, it could be a sign of ductwork buildup or blockage that needs inspection

Making these adjustments helps your system run better right now and prevents bigger problems later on.

Check Thermostat Settings

With summer winding down, you may notice mornings starting to feel a little cooler. That gives you a good reason to revisit your thermostat settings. Even small tweaks can help keep your home comfortable and your energy use in check.

If your thermostat is still set to handle peak summer heat, consider raising the temperature a degree or two during the day. You may not notice much difference, but your system won’t have to work as hard. At night, when it cools down outside, adjust the setting so your home stays comfortable without overcooling. These changes depend on your family’s routines and comfort levels, but they’re easy to try.

A programmable thermostat—or better yet, a smart model—makes the process even easier. You can create automatic settings for weekdays and weekends based on when people are home or asleep. For instance, if you’re away during the day, the system can ease off, then restart before you return home.

Adjusting the thermostat may seem minor, but it adds up over time. A well-managed setting lowers wear and tear, keeps energy bills steadier, and makes your home more pleasant for everyone. One Charleston homeowner said switching to a programmable setup helped cut back on constant thermostat changes. That’s a small win that grows into bigger comfort as the season changes.

Inspect and Clean Outdoor Unit

An often-overlooked part of your HVAC system is the outdoor unit. With summer in full swing, it’s easy for debris like leaves, grass clippings, and branches to build up around it. This can block airflow and make your air conditioning less efficient.

To help your system run smoothly, clear the area around the outdoor unit. About two feet of open space on all sides is ideal to allow for good airflow. Once the area is clean, look over the unit itself. Watch for things like bent fins or an unusual amount of dirt buildup.

You can clean the fins gently using a vacuum with a soft brush attachment or rinse them with a garden hose. Avoid using pressure washers since high force can damage the delicate parts. If cleaning the unit feels outside your comfort zone, it’s a good idea to call a professional. They can make sure everything is cleaned properly and safely, catching any minor damage before it gets worse.

Keeping the outdoor unit clean and clear lowers the risk of breakdowns and helps your system push through the last wave of summer heat with less stress.

Schedule Professional Maintenance Check

Now is a great time to schedule a professional HVAC maintenance check. As seasons change, so do the demands on your HVAC system. A professional tune-up can catch small issues early before they turn into big, expensive problems. It also gives you peace of mind knowing your system is ready for the months ahead.

During a maintenance visit, a trained technician will typically:

– Inspect and tighten electrical connections

– Lubricate all moving parts

– Check the condensate drain

– Measure airflow and adjust for efficiency

– Inspect and clean indoor and outdoor coils

Getting regular service like this keeps your HVAC system running at its best. It also helps you avoid sudden issues when you need your system most, whether you’re finishing out summer or heading into fall.

Waiting too long between tune-ups can lead to uneven cooling or rising energy bills. A seasonal check-up now is a smart way to make sure everything stays on track.

Getting Ready for Cooler Months Ahead

As late summer winds down, it’s smart to start thinking about how your HVAC system will handle the cooler months ahead. You don’t want to wait for that first chilly night to find out something’s not working right.

Start by turning on your heating system. Let it run for a bit to make sure it kicks on and blows warm air. If it hesitates or makes strange noises, that’s a red flag to get it checked out.

If you have a heat pump, remember that it acts as both your cooler and heater. Since it goes through double the workload, make sure it’s inspected and in good shape before fall rolls in.

It’s also a good time to seal up any drafts. Walk your home and check for air leaks near windows or doors. Fixing those keeps the heat in and your house feeling cozy. Wrap exposed pipes where needed to prevent freezing if temperatures unexpectedly drop.

Doing these little things now makes a big difference later. You’ll stay ahead of the weather and keep your system from working overtime when the real cold shows up.

Keeping Your Summerville Home Comfortable

Late summer gives you a great chance to show a little care to your HVAC system. It’s that perfect in-between season where smart steps make a big difference, both now and later.

Taking care of airflow, tweaking thermostat settings, cleaning up the outdoor unit, and getting a professional tune-up isn’t hard—but it leads to better performance and fewer breakdowns down the road. These efforts keep your home comfortable while saving you from bigger issues and unexpected repairs.

Prepping now as Charleston heads into fall means you’re one step ahead. Your HVAC system will be ready when the temperatures dip, and you won’t have to worry about it acting up when you need it most.

Don’t wait for the first cold front to make your move. Stay on top of seasonal care and keep your HVAC in Summerville running smooth year-round.

For a smooth transition to cooler days and to maintain your home’s comfort all year round, trust the experts at Coastal Carolina Comfort. If you’re looking for dependable HVAC in Summerville, we’re here to make sure your system runs smoothly no matter the season.

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Derrick Hall January 28, 2026
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Derrick Hall January 28, 2026

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