A Portion of All AGL Proceeds Support Charitable Causes

Why Choose AGL Heating & Air?

It’s simple – we genuinely care. Since 2004, AGL Heating & Air in Charleston, SC has proudly honored our original goal to offer our heating and air conditioning customers honesty and quality. Integrity is the foundation of all our HVAC services: installation, maintenance, and repair.

Learn MoreView Our Deals & Promotions

Satisfaction Guaranteed

Speedy Response & Installation

Top-notch Customer Service

100+ Years Combined Experience

Professional & Courteous Staff

First Timers Receive 15% Off Repairs

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!


We are HVAC Installation Experts and Trane Comfort Specialists

For top-quality HVAC performance, professional installation is the way to go. Even if you are using the best equipment available, installation is still a vital step in getting the maximum results from your heating and air conditioning system. AGL Heating & Air Technicians have over 100 years of combined experience with heating and cooling installation projects. We use only trusted industry-leading brands like Trane for all of our installation, maintenance, and repair services.

Dependable Heating & Air Solutions with Trane

Our Maintenance and Repair Services Help your System Stay Up and Running

It’s important to have a properly working heating and cooling system in your home – and an honest, dependable HVAC company for when it isn’t. Our heating and air specialists provide dependable repairs, precision routine maintenance, and quality installation to ensure that your HVAC system provides affordable comfort to your home all year long. Whether you’re looking for a one-time repair or a total system replacement, our top-notch technicians are ready to provide you and your home with superior customer service.

Special Financing Available

Special 48-Month Financing


Up to $2000 Rebate

Available with approved credit on select systems. Call for Details.

Contact Us Now

Recent News

Why Your AC Won’t Turn On

Heating & Air Conditioning Tax Credit

The Process of Replacing Your HVAC System