Charlestons Best HVAC Contractor
Fast, Reliable, Local HVAC Service Across Charleston Homes
Call: (843) 608-1689
Heating
Keep your home warm and reliable when temperatures drop, with repair, replacement, and tune-ups built for Lowcountry systems.
Cooling
Restore consistent cooling fast with AC repair, installation, and maintenance designed for Charleston heat and humidity.
Air Quality
Reduce humidity, improve airflow, and create a healthier indoor environment with whole-home air quality solutions.
Alexander Heating & Cooling helps homeowners across Charleston and surrounding communities stay comfortable with clear pricing, fast scheduling, and dependable service.
Request an Appointment
We will get back to you as soon as possible.
Please try again later.
Fix the Problem Without the Guesswork
Life feels easier when your home is comfortable and your system is working the way it should. With Alexander Heating & Cooling, you get straightforward service, local accountability, and clear next steps every time.
Flat-Rate Pricing
You don’t have to worry about unexpected charges—pricing is explained clearly before work begins so you know what to expect.
Fast Scheduling Options
When something breaks, waiting isn’t an option; quick appointment requests help you get service moving without delays.
BBB Accredited Business
Letting someone into your home feels easier when you know the company meets verified standards and is accountable locally.
Full-Service HVAC Solutions
Whether it’s a repair, replacement, or maintenance plan, you can handle everything with one team that knows your system.
Humidity-Aware Solutions
Charleston homes deal with heavy moisture, and solutions are built to improve comfort while reducing that sticky indoor feeling. 
reliable service, Real experiences.
What our clients have to say:
Local HVAC Help When You Need It Most
When your AC struggles in the Charleston heat or your system stops working altogether, it’s hard to know what to do next. You want a quick answer, clear pricing, and someone you can trust in your home. Alexander Heating & Cooling helps homeowners move from uncertainty to a clear next step with flat-rate service and straightforward scheduling. From Mount Pleasant to Daniel Island, Isle of Palms, Sullivan’s Island, and Huger, help is always close by.
Solutions That Get Your Home Back on Track
HVAC Repair
When your system stops cooling or heating properly, it creates stress fast. Repairs focus on diagnosing the real issue and restoring consistent comfort without unnecessary upsells.
HVAC Installation & Replacement
If your system can’t keep up or keeps breaking down, replacement may be the better path. You’ll get clear recommendations and options built around your home and budget.
HVAC Maintenance & Tune-Ups
Skipping maintenance often leads to breakdowns during peak season. Regular tune-ups help your system run efficiently and reduce the chances of costly surprises.
Ductless Mini Splits
Some rooms never feel comfortable no matter what you try. Ductless systems give you targeted control without major changes to your home.
Indoor Air Quality
If your home feels humid, dusty, or uncomfortable, your air quality may be the issue. Whole-home solutions help create cleaner, more balanced indoor air.
Maintenance Plans
Unexpected repairs can add up quickly over time. Maintenance plans help you stay ahead of problems while offering added value on service.
Book Service Today
You don’t have to wait and hope the problem gets better on its own. Alexander Heating & Cooling makes it easy to request service, understand your options, and move forward with confidence. Homeowners across Mount Pleasant, Daniel Island, Isle of Palms, Sullivan’s Island, and Huger rely on straightforward service that keeps things simple from start to finish.
