AC Repair & Maintenance in Charleston, SC
Is your AC not cooling, blowing weak air, or making strange noises? 911 Service Today provides residential AC repair and maintenance in Charleston, SC, and throughout the Lowcountry, including Mount Pleasant and Summerville. Our technicians diagnose the problem, explain your options, and give you an upfront estimate before any work begins. We also repair and maintain heating systems and furnaces.
- Same-Day Service
- Any Make or Model
- Insured & Certified Local Technicians
- A Call 30 Minutes Before Our Arrival
Air Conditioning Repair and Maintenance
Charleston’s heat and humidity keep your air conditioner working hard. Regular AC maintenance helps your system run efficiently and can catch small problems before they turn into breakdowns.
If your AC isn’t cooling properly, has weak airflow, is making unusual noises, or has stopped working altogether, our technicians will inspect the system, diagnose the issue, and recommend the right repair. We service all makes and models.
Common AC problems we fix:
- Blowing warm air
- Unusual noises
- System won’t turn on
- Weak airflow
- Water leaking
- Short cycling
Want to stay ahead of breakdowns? Our 911 Care Plan includes two seasonal tune-ups a year (spring for cooling, fall for heating) and reminders when each visit is due, so routine maintenance never slips. Regular care helps your system run efficiently and can help extend its life.
Heating and Furnace Repair and Maintenance
When the temperature drops, you need your heat to work. If your furnace won’t start, blows cool air, or keeps shutting off, we’ll find the cause and get your home warm again.
Common heating problems we fix:
- No heat
- Strange noises or smells
- Thermostat problems
- Weak or uneven airflow
- Furnace turns on and off
A fall tune-up, included in the 911 Care Plan, helps catch worn parts before the first cold night.
Stay ahead of breakdowns with the 911 Care Plan
One plan covers both your air conditioning and your heating: two seasonal tune-ups a year, with reminders so you never have to keep track. Ask us about the plan.
Two seasonal visits
Spring to prepare cooling, fall to prepare heating.
Efficiency and performance
A clean, well-tuned system doesn’t have to work as hard to cool and heat your home.
Timely reminders
We remind you when each seasonal visit is due, so you never miss a service.
Longer system life
Routine maintenance reduces wear and tear, which can help your system last longer.
HOW IT WORKS
Our Heating and AC Repair Process
1. You get a call before we arrive
Our office calls you before the technician arrives, so you know when to expect us.
2. Diagnose the problem
Our technician inspects your system to find the cause.
3. Explain your options
Your technician explains the findings and the recommended repair, with an upfront estimate before any work begins.
4. We answer all your questions
Ask us anything about the problem, the repair, or your system. We take the time to answer every question before you decide.
5. Complete the repair
Once you approve, we carry out the repair. Our fully stocked service vehicles mean most repairs are completed in a single visit.
6. Clean up and test
We clean our work area and test the system before we leave, so we know everything is working as it should.
Why Choose 911 Service Today?
Qualified technicians
Experienced technicians who work on residential heating and cooling systems and focus on finding the real cause of the problem.
Clear communication, upfront estimates
Your technician explains what’s wrong in plain terms and gives you the cost before any work begins.
Convenient scheduling, local service
Easy to schedule, with a call before we arrive and a follow-up call after the repair to make sure you’re happy with the result.
Respectful, thorough service
We treat your home with care, work neatly, clean up after ourselves, and test your system before we leave.
Areas We Serve
- Charleston
- Summerville
- Goose Creek
- Ladson
- Hanahan
- Mount Pleasant
- Sullivan's Island
- Huger
- Wadmalaw Island
- Awendaw
- Johns Island
- James Island
- Kiawah Island
- Folly Beach
- Isle of Palms
- Daniel Island
- West Ashley
- North Charleston
- Seabrook Island
Business Hours
Monday – Friday
7:00 AM – 5:00 PM
Saturday
8:00 AM – 2:00 PM
Sunday
By appointment
Frequently Asked Questions
How often should I schedule AC maintenance?
Once a year is right for most homes, ideally in spring before the hottest weather arrives. In the Lowcountry’s heat and humidity, your AC runs for much of the year, so a yearly check matters. With the 911 Care Plan, you get two seasonal visits (spring for cooling, fall for heating), and we remind you when each one is due. Between visits, check your air filter every one to three months, depending on the filter type.
When should I call for AC repair?
Call us if you notice any of these:
- Warm air or weak airflow from the vents
- The system won’t turn on or keeps shutting off
- Grinding, squealing, or banging noises
- Water leaking near the indoor unit
- Ice on the unit or refrigerant lines
- Unusual smells
- A sudden jump in your electric bill, or rooms that feel humid
Small problems often grow into bigger ones, so it’s best not to wait. If you see ice or water leaking, switch the system off and call us to prevent further damage.
Should I clean or replace my AC air filter?
It depends on the type of filter you have, and the label on the frame will tell you.
Disposable filters (paper or fiberglass in a cardboard frame) can’t be cleaned. Replace them every one to three months, or more often if you have pets, dust, or allergies.
Washable filters (a sturdy frame with mesh or foam, labeled “washable” or “permanent”) can be rinsed and reused. Let them dry completely before putting them back, and replace them if they’re torn, warped, or still dirty after washing.
If you’re not sure which you have, treat it as disposable, because washing one ruins it. To check the filter, turn the system off, slide it out, and hold it up to a light. If you can’t see light through it, it’s time to clean or replace it. Never run your system without a filter, and never put a damp one back in.
A clogged filter is a common cause of weak airflow. If you’ve changed it and your AC still isn’t cooling well, call us at (843) 789-4824. The coils, refrigerant, and electrical parts are best left to a technician.
What areas do you serve?
We serve Charleston and the surrounding Lowcountry, including Mount Pleasant, Summerville, North Charleston, West Ashley, Daniel Island, Goose Creek, Ladson, Hanahan, James Island, Johns Island, Folly Beach, Isle of Palms, Sullivan’s Island, Kiawah Island, Seabrook Island, Wadmalaw Island, Awendaw, and Huger. Not sure if we cover your address? Call us and we’ll let you know.