Alexander Heating & Cooling is a small, family-owned business in Charleston, SC, with 30+ years of HVAC expertise. We provide top-quality service, installations, and repairs for HVAC systems, tankless water heaters, gas lines, and fireplaces.

Alexander Heating and Cooling is your trusted HVAC partner in Charleston, South Carolina. With a dedication to excellence and a commitment to customer satisfaction, we strive to deliver top-quality heating and cooling solutions tailored to your needs.

At Alexander Heating and Cooling, our mission is to provide reliable HVAC services with integrity and professionalism. We prioritize customer satisfaction and aim to exceed expectations with every service we provide.

Pricing

Residential services

  • AC Installation

    Installing new air conditioning systems in homes.

  • AC Repair

    Fixing malfunctioning or broken AC units.

  • AC Maintenance & Tune-ups

    Regular checkups to ensure efficiency and prevent issues.

  • Ductwork Cleaning & Repair

    Cleaning or fixing air ducts for better airflow and air quality.

  • Thermostat Installation & Calibration

    Installing and optimizing smart or traditional thermostats.

Repair Services

  • AC Repair

    Fixing issues with non-working or inefficient air conditioning units.

  • Refrigerant Leak Repair

    Identifying and sealing refrigerant leaks to restore cooling.

  • Compressor Repair

    Repairing or replacing faulty AC compressors.

  • Fan Motor Repair

    Fixing or replacing malfunctioning indoor or outdoor fan motors.

  • Thermostat Repair

    Troubleshooting and repairing unresponsive or inaccurate thermostats.

Maintenance Services

  • AC Tune-Up

    Seasonal check-up to ensure optimal AC performance.

  • Filter Replacement

    Changing air filters to maintain air quality and efficiency.

  • Coil Cleaning

    Cleaning evaporator and condenser coils to improve cooling

  • Thermostat Calibration

    Ensuring accurate temperature control.

  • System Inspection

    Full system check to detect wear, leaks, or potential failures.

Location

FAQ

Does Alexander Heating and Cooling offer financing options for HVAC installations?

Yes, we understand that HVAC installations can be a significant investment. That’s why we offer flexible financing options to help make your new HVAC system more affordable and accessible.

Can Alexander Heating and Cooling help improve indoor air quality?

Yes, indoor air quality is essential for a healthy and comfortable home or workplace. Our indoor air quality services include air purifiers, humidifiers, and ventilation solutions to help you breathe easier and enjoy cleaner air indoors.

What brands of HVAC equipment does Alexander Heating and Cooling work with?

Alexander Heating and Cooling works with top-quality brands to ensure the best possible performance and reliability for your HVAC system. We have experience working with a wide range of manufacturers to meet your specific needs.

Are your technicians licensed and insured?

Yes, all of our technicians are fully licensed, certified, and insured to ensure the highest level of professionalism and expertise in every service we provide.

How can I schedule an appointment with Alexander Heating and Cooling?

Scheduling an appointment with Alexander Heating and Cooling is easy! Simply give us a call or fill out the contact form on our website, and our team will assist you in booking a convenient service appointment.

Where is Alexander Heating and Cooling located?

Alexander Heating and Cooling is located in Charleston, South Carolina, serving residential and commercial customers in the surrounding areas.

What services does Alexander Heating and Cooling offer?

We offer a wide range of services including AC repair, heating repair, preventative maintenance, installation of HVAC systems, indoor air quality solutions, ductwork repair/replacements, and more.

How often should I change my HVAC system's air filters?

It’s recommended to change your air filters every 1 to 3 months, depending on factors such as the type of filter, household occupancy, and air quality.

What should I do if my HVAC system is making strange noises?

Strange noises from your HVAC system could indicate a range of issues, from loose components to worn-out parts. It’s best to turn off the system and contact a professional HVAC technician to diagnose and resolve the problem.

What is the ideal temperature to set my thermostat for energy efficiency?

Setting your thermostat to 78°F (26°C) during the warmer months and 68°F (20°C) during the cooler months is generally recommended for optimal energy efficiency and comfort. Adjusting your thermostat by just a few degrees can make a significant difference in energy savings.

Google Reviews

5.0
427 reviews
  • Show Me How Videos
    Show Me How Videos
    in the last week

    ⭐⭐⭐⭐ Outstanding Craftsmanship & Professionalism — Highest Recommendation I recently had Alexander Heating & Cooling install an 18,000 BTU Mitsubishi mini split in my garage gym, and I cannot say enough about the quality of their work and professionalism from start to finish. Chris, the owner, runs a tight ship — and it shows in every detail. Jason, the technician who performed the installation, is simply exceptional at his craft. The job required drilling through filled cinder block walls, which is no small feat, and they handled it with precision and complete confidence. When the work was done, everything looked immaculate — not “good for a garage,” just genuinely, beautifully done. What truly set this experience apart was watching them work. Both the interior and exterior units were installed with meticulous attention to detail, clean lines, and obvious pride in the finished product. They treated my garage workout space with the same care and respect they would give a living room. That kind of craftsmanship is increasingly rare, and it did not go unnoticed. The entire Alexander team clearly takes ownership of their work — not just technically, but aesthetically. They care how it looks when they leave, and that speaks volumes about the character of this company. I was so impressed that I’m now planning to use Alexander Heating & Cooling for service and maintenance on my other two HVAC units. When you find a team you can trust to do exceptional work, you don’t let them go. If you’re looking for an HVAC company that combines real skill, attention to detail, and genuine professionalism, look no further. Alexander Heating & Cooling has earned a customer for life.

  • Jason Sox
    Jason Sox
    in the last week

    Chris and his company jumped right in when I needed help! Especially since it was on a Friday right before closing. He was able to come out and service my unit in less than an hour and had everything back to being cool that evening! Highly recommend great guys and great service!

  • Jeffrey Ganz
    Jeffrey Ganz
    in the last week

  • Michael
    Michael
    in the last week

    My wife and I were looking for a new AC company to do our maintenance and any repairs. We have had agreements in the past with other larger companies and we always felt they were trying to up sell us, even on parts we didn’t need. So obviously we were looking for a smaller, more personalized company. We found it in Alexander Heating and Cooling. When we called, they were quick to help. When it came time for the appointment, Matt was early and very respectful of our system and house. There was no effort to try to sell more than what we asked for or needed. This was a great experience and Alexander Heating and Cooling is our new AC company. Oh and the owner of the company texted a follow up to make sure we were satisfied.

  • john sokolsky
    john sokolsky
    in the last week

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    Opening Hours

    • Sunday 05:00 AM - 11:45 PM
    • Monday 05:00 AM - 11:45 PM
    • Tuesday 05:00 AM - 11:45 PM
    • Wednesday 05:00 AM - 11:45 PM
    • Thursday 05:00 AM - 11:45 PM
    • Friday 05:00 AM - 11:45 PM
    • Saturday 05:00 AM - 11:45 PM