Home of the $79 SPRING TUNEUP | 0% Interest for 24 Months
Home of the $79 SPRING TUNEUP | 0% Interest for 24 Months
Home of the $79 SPRING TUNEUP | 0% Interest for 24 Months
If your AC is running but the air coming out isn't cold, Coastal Carolina Comfort's Columbia technicians can diagnose the issue, from low refrigerant to a failing compressor — and fix it fast.
Water pooling around your indoor unit usually means a clogged condensate drain or frozen evaporator coil. In Columbia's high humidity, this is one of the most common AC repairs Coastal Carolina Comfort handles.
Banging, squealing, or clicking from your AC unit signals a mechanical problem that needs immediate attention. Coastal Carolina Comfort's technicians carry the parts to resolve most noise-related repairs in a single visit.
Coastal Carolina Comfort is the Midlands’ trusted choice for residential AC repair in Columbia, South Carolina. Whether a capacitor has failed on a 97-degree afternoon in Lexington, a refrigerant leak is causing your system to blow warm air in Forest Acres, or your condenser unit won’t start at all in Irmo — Coastal Carolina Comfort’s NATE-certified technicians diagnose the problem accurately, explain what they find in plain language, and provide upfront pricing before any work begins.
Columbia’s climate is uniquely demanding on air conditioning systems. The South Carolina Midlands regularly sees summer highs in the mid-90s, with heat indexes exceeding 105°F and relative humidity hovering between 70 and 80 percent from June through September. That combination forces AC systems to run longer cooling cycles, puts stress on compressors and capacitors, and accelerates condensation issues that lead to frozen coils, water leaks, and drainage failures.
Coastal Carolina Comfort was founded in 2019 as a family-owned HVAC company headquartered in Summerville, SC, and has expanded to serve the entire Columbia and Midlands region — including Richland County, Lexington County, and Calhoun County. As an authorized Daikin dealer, Coastal Carolina Comfort services all major AC brands and carries the most common replacement parts on every truck so the majority of repairs can be completed in a single visit.
Columbia’s intense summer heat and high humidity put constant stress on residential cooling systems. Coastal Carolina Comfort’s technicians repair these problems daily across the Midlands — here are the issues we see most often in Columbia, Lexington, and Irmo homes.
Low refrigerant, a dirty condenser coil, or a failed compressor can cause your AC to run without cooling. In Columbia's heat, this turns from an inconvenience to a safety concern fast. Coastal Carolina Comfort diagnoses the root cause before recommending any repair.
Columbia's humidity creates heavy condensation on evaporator coils. When the drain line clogs — which happens frequently in the Midlands — water backs up and leaks inside your home. Coastal Carolina Comfort clears blockages and installs overflow protection to prevent water damage.
Extreme heat accelerates wear on capacitors and contactors — the electrical components that start and run your compressor and fan motors. These are the single most common AC repairs Coastal Carolina Comfort completes across the Columbia service area, and our technicians carry replacements on every truck.
Restricted airflow from dirty filters or low refrigerant causes evaporator coils to ice over, shutting down your cooling system entirely. The Midlands' humidity makes this problem worse. Coastal Carolina Comfort identifies whether the cause is airflow-related, a refrigerant leak, or a blower motor issue — and fixes it on the spot.
If your AC kicks on for a few minutes and then shuts off before the house reaches temperature, the system is short cycling. Common causes in Columbia homes include an oversized unit, a failing thermostat, or an electrical issue. Short cycling wastes energy and damages components — Coastal Carolina Comfort's technicians pinpoint the cause and stop the cycle.
The compressor is the most expensive component in your AC system. When it fails, homeowners face a decision: replace the compressor or replace the entire system. Coastal Carolina Comfort provides honest guidance — if repair makes financial sense, we repair it. If replacement is smarter, we'll tell you that too. No pressure, just facts.
Coastal Carolina Comfort never starts a repair without understanding the problem first. Every AC service call in Columbia follows the same transparent process — because the right diagnosis is the difference between a repair that lasts and one that wastes your money.
Call Coastal Carolina Comfort at (843) 708-8735 or request service online. Our team asks targeted questions about your AC symptoms to dispatch the right technician with the right parts. We provide a clear arrival window and send a text when your technician is on the way.
Your Coastal Carolina Comfort technician performs a systematic inspection — checking refrigerant pressures, electrical connections, capacitor health, thermostat function, airflow, and drainage. We don't guess. We measure, test, and identify the actual root cause before recommending anything.
Once the diagnosis is complete, your technician explains what's wrong in plain language and provides a flat-rate price for the repair — covering parts and labor. The price Coastal Carolina Comfort quotes is the price you pay. No hidden fees, no surprise charges. You approve the work before we start.
Coastal Carolina Comfort's technician completes the repair using quality replacement parts, then verifies the system is operating correctly — checking temperatures, pressures, and airflow to confirm the fix. We don't leave until your AC is cooling your Columbia home the way it should.
Coastal Carolina Comfort services every type of residential cooling system found in Columbia and Midlands homes — from central air conditioners in newer Lexington subdivisions to heat pump systems in older Richland County neighborhoods and ductless mini splits in downtown Columbia renovations. We repair all major brands including Daikin, Trane, Carrier, Lennox, Rheem, Goodman, and more.
The most common cooling system in Columbia homes. Central AC units use ductwork to distribute cooled air throughout the house. Common repair issues in the Midlands include capacitor failures, refrigerant leaks, frozen coils, and blower motor problems. Coastal Carolina Comfort's technicians carry parts for all major central AC brands and complete most repairs in a single visit.
Many Columbia homes — particularly in Lexington, Irmo, and Cayce — use heat pumps that provide both heating and cooling. When your heat pump isn't cooling effectively, the problem may involve the reversing valve, refrigerant charge, or outdoor unit. Coastal Carolina Comfort's NATE-certified technicians specialize in heat pump diagnostics and repair.
Ductless systems are increasingly popular in Columbia's older homes, additions, and converted spaces where running ductwork isn't practical. When a mini split stops cooling, causes include a dirty filter, refrigerant leak, or drainage issue. Coastal Carolina Comfort repairs and services all ductless brands, including our partner brand Daikin.
Some Columbia homes, particularly manufactured and modular homes, use self-contained package units where all components are housed in a single outdoor cabinet. These systems require specific repair expertise because the compressor, evaporator, and air handler are integrated.
Not every AC problem announces itself with a dramatic breakdown. Many issues start small and get worse over time — especially in the Columbia heat, where your system runs 10 to 14 hours a day during peak summer. Coastal Carolina Comfort recommends calling for professional diagnosis if you notice any of the following warning signs.
If the air coming from your vents is warm or room-temperature, the issue is typically low refrigerant, a failed compressor, or a faulty expansion valve. In Columbia's summer heat, an AC blowing warm air can raise indoor temperatures dangerously fast. Coastal Carolina Comfort diagnoses the exact cause before recommending repair.
Low airflow usually signals a clogged filter, a failing blower motor, or blocked ductwork. In Midlands homes with crawl spaces — which are common in older Columbia and West Columbia neighborhoods — ductwork can sag or disconnect, severely reducing airflow. Coastal Carolina Comfort inspects both the air handler and the duct system to identify the source.
A sudden increase in your electric bill often means your AC is working harder than it should to maintain temperature. Common causes include low refrigerant, a dirty evaporator coil, or a thermostat malfunction. Coastal Carolina Comfort's technicians measure system efficiency during every diagnostic and recommend only the repairs needed to restore normal performance.
Grinding, squealing, banging, or clicking sounds from your indoor or outdoor unit indicate a mechanical issue — from a failing fan motor bearing to a loose component inside the compressor. Coastal Carolina Comfort's technicians are trained to identify AC noises by type and locate the failing part quickly.
Water leaks around your air handler typically mean the condensate drain line is clogged or the drain pan is cracked. In Columbia's high-humidity climate, condensate drains clog frequently from algae and buildup. Left unaddressed, the leak can cause significant water damage to floors, walls, and ceilings. Coastal Carolina Comfort clears drain lines and checks for secondary damage during every repair.
Short cycling means the compressor is engaging, running briefly, and shutting off before the home reaches the thermostat setpoint. Common causes include an oversized system, a failing capacitor, a refrigerant issue, or a faulty thermostat. Short cycling increases wear on the compressor and drives up energy costs. Coastal Carolina Comfort identifies the root cause and resolves it — not just the symptom.
A frozen evaporator coil or iced-over refrigerant line usually indicates restricted airflow or a refrigerant leak. In the Midlands, a dirty air filter combined with high humidity is the most common trigger. Coastal Carolina Comfort's technicians safely thaw the system, identify the underlying cause, and complete the repair.
Coastal Carolina Comfort built our reputation in the South Carolina Lowcountry, and we’re bringing that same standard of honest, expert service to every home in the Midlands. Here’s what sets Coastal Carolina Comfort apart from other AC repair companies in Columbia.
Coastal Carolina Comfort's technicians hold NATE (North American Technician Excellence) certification — the HVAC industry's most respected credential. NATE-certified technicians diagnose problems faster and complete repairs correctly the first time.
Coastal Carolina Comfort provides a clear, written price before any repair work begins. The price covers parts, labor, and the repair warranty. No hourly billing surprises. No hidden fees.
Coastal Carolina Comfort's Comfort Club members pay $0 for diagnostic service calls — eliminating the barrier between noticing a problem and getting it professionally diagnosed.
Coastal Carolina Comfort holds a South Carolina mechanical contractor license and carries full liability and workers' compensation insurance. Every technician who enters your Columbia home is fully insured and background-checked.
As one of the largest Daikin dealers in the region, Coastal Carolina Comfort has direct access to Daikin parts, warranty support, and factory training. We service all major AC brands, but Daikin systems receive manufacturer-level expertise.
Coastal Carolina Comfort is owned and operated by Billy Webb, who started in the HVAC trade at 18 and built the company on a foundation of honesty, fair pricing, and treating every customer like family. That's not a slogan — it's how we run every service call.
Not every AC breakdown means you need a new system — and Coastal Carolina Comfort will never push a replacement when a repair makes more sense. Here’s the framework Coastal Carolina Comfort’s technicians use to help Columbia homeowners make the right call.
Coastal Carolina Comfort’s technicians will always present both options — repair and replacement — with honest pricing for each so you can make an informed decision. If replacement is the better path, Coastal Carolina Comfort offers 0% interest financing for 24 months on qualifying installations, making the transition to a high-efficiency system manageable for Columbia families.
For a deeper breakdown of how to evaluate this decision, read Coastal Carolina Comfort’s full guide: AC Repair vs. AC Replacement: How Lowcountry Homeowners Should Decide.
Most residential AC repairs in the Columbia and Midlands area cost between $150 and $650, depending on the component that needs replacement. Simple repairs like a capacitor or contactor replacement typically run $150 to $300. More complex repairs involving the compressor, evaporator coil, or refrigerant recharge can range from $400 to $1,200 or more. Coastal Carolina Comfort provides upfront, flat-rate pricing after diagnosis — the price you're quoted is the price you pay. For a complete breakdown by repair type, read Coastal Carolina Comfort's guide to AC repair costs in South Carolina.
Yes. Coastal Carolina Comfort prioritizes same-day and emergency AC repair across the Columbia and Midlands service area, including Lexington, Irmo, West Columbia, Cayce, Forest Acres, and Richland County. Call (843) 708-8735 to request same-day dispatch. Availability depends on technician scheduling, but Coastal Carolina Comfort makes every effort to reach emergency calls within a few hours.
Coastal Carolina Comfort repairs all major residential AC brands, including Daikin, Trane, Carrier, Lennox, Rheem, Goodman, York, Amana, and more. As an authorized Daikin dealer, Coastal Carolina Comfort provides manufacturer-level warranty support and factory-trained service for Daikin systems specifically.
Coastal Carolina Comfort's Comfort Club members receive $0 service calls — the diagnostic is included at no charge. For non-members, a standard diagnostic fee applies, which is credited toward the cost of any approved repair. Coastal Carolina Comfort never charges for the diagnosis and then adds a separate repair fee. The quoted repair price includes everything.
As a general guideline, if your AC system is under 10 years old and the repair cost is less than half the price of a new unit, repair typically makes sense. If the system is 15+ years old, uses R-22 refrigerant, or has required multiple repairs recently, replacement is often more cost-effective. Coastal Carolina Comfort's technicians will present both options with honest pricing so you can make the best decision for your home and budget.
Coastal Carolina Comfort's Columbia service area covers Richland County, Lexington County, and Calhoun County — including Columbia, Lexington, West Columbia, Irmo, Cayce, Forest Acres, Chapin, St. Andrews, Dentsville, St. Matthews, and all surrounding Midlands communities.
Coastal Carolina Comfort is headquartered at 110 Lipman St. in Summerville, SC. Our fleet dispatches daily across three service regions to cover the entire South Carolina corridor — from the coast of Charleston to the heart of Columbia. Whether you need AC repair in Lexington or emergency service in Forest Acres, Coastal Carolina Comfort’s technicians are in your area and ready to respond.
Charleston
Mt. Pleasant
West Ashley
James Island
North Charleston
Goose Creek
Summerville
Nexton
Cane Bay
Knightsville
Sangaree
Ladson
Columbia
Lexington
West Columbia
Irmo
Cayce
Forest Acres
Chapin
St. Matthews
Coastal Carolina Comfort publishes in-depth guides to help Columbia homeowners make informed decisions about their cooling systems. Explore these resources from our AC repair knowledge library.
AC Not Blowing Air? A Lowcountry Diagnostic When the System Runs but the Vents Are Quiet [AUTHOR — Coastal Carolina Comfort technician] · Updated for the 2026 cooling season ·
AC Making Strange Noises? A Sound-by-Sound Diagnostic for Lowcountry Homeowners [AUTHOR — Coastal Carolina Comfort technician] · Updated for the 2026 cooling season · ~8 minute read Quick Answer Match
AC Won’t Turn On? A Lowcountry Diagnostic Flowchart Before You Call [AUTHOR — Coastal Carolina Comfort technician, credentials TBD] · Updated for the 2026 cooling season · ~7 minute read
AC Frozen Evaporator Coil: Why It Happens in Lowcountry Humidity and How to Thaw It Safely [AUTHOR — Coastal Carolina Comfort technician, credentials TBD] · Updated for the 2026 cooling
Why Is My AC Leaking Water Inside My House? A Lowcountry Diagnostic Guide [AUTHOR — Coastal Carolina Comfort technician, credentials TBD] · Updated for the 2026 cooling season · ~9
AC Keeps Turning On and Off? A Lowcountry Short-Cycling Diagnostic [AUTHOR — Coastal Carolina Comfort technician, credentials TBD] · Updated for the 2026 cooling season · ~8 minute read Quick
