A Portion of All AGL Proceeds Support Charitable Causes

Why Choose AGL?

We are committed to providing only quality craftsmanship and the most efficient and effective heating and cooling equipment to ensure the comfort of your home and family. Contact your local experts at AGL Heating & Air today!

The Best HVAC Company in Charleston, SC

With AGL Heating and Air Services, every customer and every home is treated with respect. Using a hands-on training approach, we instill a sense of quality, integrity, and pride in our team, because we genuinely care about providing you with an enjoyable, hassle-free experience. Our technicians truly appreciate the trade and understand not only the importance of affordable comfort but also knowing what they are doing before they do it. We are proud of our accomplishments and will continue to provide you with only the highest quality heating and cooling services.

Satisfaction Guaranteed

Speedy Response & Installation

Top-notch Customer Service

100+ Years Combined Experience

Professional & Courteous Staff

First Timers Receive 15% Off

We’re a Part of the Local Community

Since starting our locally owned and operated Charleston heating and air company back in 2004, our technicians have proudly provided top-notch services to our valued customers. In a few words, we are simple, honest, friendly, and most importantly, we are family. Nothing is more important than our customers, and “Doing the Right Thing” is our daily mission. We continually strive to earn the trust and loyalty of our customers with each and every in-home appointment. We are honored to provide good ol’ honest heating and air conditioning services to the Charleston, SC region. To give back to the community we love, 10% of all proceeds from diagnostic charges are given back to local charities.

Get Started with AGL

Contact us using the form below and we will get in touch with you asap to get you started with AGL’s maintenance services.

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AGL Services has consistently been an excellent repair service, with strong professionalism and technical expertise. On every job they have done for me they have exceeded my expectations, and their repairs last. I appreciate the peace of mind.


Been using AGL for the past 8+ years. They have been incredible to work with. They have performed a wide variety of services ranging from a simple repair to an extremely detailed full system replacement as well as ductwork. Will always use this company. All techs, office employees and the owner are extremely professional.


We love these guys. During our regular maintenance, we mentioned that our heating unit was louder than usual. Sean immediately diagnosed the problem. He and Steven returned 2 days later and replaced the "draft motor." Problem solved. They were punctual on both occasions and super friendly and professional. They know their stuff! And it's a plus that they're dog lovers! Highly recommend.


AGL is an amazing company! I can't speak highly enough of them. All of their employees are very educated, helpful, professional and prompt. Steven C was of great assistance in helping fix my evaporator coil and getting my AC to work. He was also able to help my neighbors with a similar issue. I will always use AGL from now on!


AGL has been a fabulous company for my heating and air. They were able to fix my old system and keep it working for 2 years until I had to replace the unit. The new system they put in has been wonderful. They come and service it twice a year. They are always friendly, courteous, and helpful. I trust them and highly recommend them to my friends and family.


Great company! I called as a new customer - they fit me in that day. Becca, the customer service rep was friendly and polite on the phone. Shawn, the technician was great - professional, on time, and above all else honest. They have a service package that is a great value! I am very happy that I am now considered a customer of AGL Services. I highly recommend them.


AGL has been a great service from day 1 with a full install of a new unit & all ducts replaced. They service 2x a year & keep my HVAC working great. Recently had an issue with my system not working during the hottest month. They came out the same day of call & fixed the issue. I would highly recommend using AGL Services!