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50+ Years
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Emergency
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Your Trusted HVAC Partner Since 1926
For nearly a century, Sig Cox Heating & Air Conditioning has established itself as the premier HVAC provider in the Central Savannah River Area. Founded in 1926, we have built an enduring reputation on unwavering honesty, exceptional quality, and dependable service. Our team of certified HVAC technicians and mechanical engineering experts delivers comprehensive heating, ventilation, and air conditioning solutions tailored to both residential and commercial clients. As a Lennox Premier Dealer, we combine cutting-edge technology with time-tested expertise to ensure optimal system performance and energy efficiency. We specialize in new installations, emergency repairs, preventive maintenance, and indoor air quality improvements across Augusta, Aiken, and surrounding communities.

Our commitment to excellence extends beyond technical proficiency to include transparent communication, competitive pricing, and personalized customer support that prioritizes long-term relationships over transactional interactions. The company's mechanical contracting division further demonstrates our capability to handle complex commercial projects while maintaining the same standards of craftsmanship that have defined our residential services since our inception. This dual focus enables us to address diverse HVAC needs while maintaining strict compliance with industry regulations and safety protocols.
Services
HVAC Installation Air Conditioning Repair Heating Maintenance Indoor Air Quality Commercial HVAC
Details
  • Year established: 1926
Highlights and features
  • 98 years of HVAC industry experience since 1926
  • Certified technicians with mechanical engineering expertise
  • 24/7 emergency service available year-round
  • 100% satisfaction guarantee on all installations
  • Serving 8+ cities in the Central Savannah River Area
Associations and certifications
  • Lennox Premier Dealer
What people say
Trusted HVAC company 24/7 emergency support Award-winning service Military discounts Decades of experience
Services
Residential HVAC
Sig Cox provides comprehensive residential HVAC solutions including system installation, repair, and maintenance. Our experts assess home requirements to recommend optimal heating and cooling systems while ensuring proper ductwork and thermostat functionality. We specialize in energy-efficient upgrades like smart thermostats and air purification systems that improve both comfort and indoor air quality.
Commercial HVAC
Our commercial HVAC division offers installation, repair, and maintenance services for businesses and public facilities. We handle complex commercial systems including rooftop units, condensing systems, and large-scale ventilation requirements. Our 24/7 emergency repair service minimizes operational downtime while regular maintenance agreements help businesses reduce energy costs and extend equipment lifespan.
Maintenance Agreements
Preventive maintenance programs ensure optimal HVAC performance year-round. Our agreements include seasonal system tune-ups, component inspections, and priority emergency service. Regular maintenance extends equipment lifespan, improves energy efficiency, and helps identify potential issues before they become major breakdowns, providing both residential and commercial clients with long-term cost savings.
Emergency Repairs
HVAC emergencies require immediate attention, so we offer 24-hour emergency repair services for both residential and commercial clients. Our rapid response team addresses urgent issues like complete system failures, refrigerant leaks, and electrical malfunctions. We prioritize restoring comfort and minimizing business disruptions through prompt diagnosis and efficient repair solutions.
Indoor Air Quality
We improve indoor air quality through specialized filtration systems, dehumidifiers, and ventilation solutions. Our experts assess air quality issues and recommend appropriate interventions to reduce allergens, manage humidity, and eliminate pollutants. These services particularly benefit homes and businesses in the Southeastern climate where high humidity and seasonal allergens are common concerns.
Questions
What HVAC services do you offer for residential customers?
We provide complete residential HVAC solutions including system installation, repair, maintenance, smart thermostat upgrades, and indoor air quality improvements for Augusta homes.
Do you offer emergency HVAC repair services?
Yes, we provide 24/7 emergency repair services for urgent heating and cooling issues, with rapid response times to restore comfort quickly.
What commercial HVAC services are available?
Our commercial division handles installations, repairs, and maintenance for all commercial HVAC systems, including rooftop units, refrigeration systems, and large-scale ventilation projects.
Do you service areas beyond Augusta?
Yes, we serve the entire Central Savannah River Area including North Augusta, Aiken, Evans, Harlem, Grovetown, and Martinez.
Are financing options available for HVAC upgrades?
Yes, we offer financing options to help customers invest in energy-efficient HVAC systems while managing upfront costs.
What is included in your maintenance agreements?
Our agreements include seasonal tune-ups, priority service, component inspections, and energy efficiency optimizations to maintain system performance and longevity.
Reviews (5)
George Hsu
Jun 21, 2022 Report
Doug Coleman was excellent in explaining all details about my families needs and took the time to answer all of our question in detail! He was very responsive and worked around our schedule to fit a time to install a new AC unit that fit our specific needs. James, Matt and Brandon were the most professional, courteous and timely team I have ever had the pleasure of working with, they not only installed our unit in a timely manner, they were very respectful, neat and also took the time to answer all of our questions. Would 100% recommend to any of our friends! Great experience!
Thomas Lowry
Jun 17, 2022 Report
James and Brandon arrived on time and went right to work replacing our aging package heat pump system with a new one. Installed and set up our programmable thermostat and the entire change over took less than four hours. Excellent service and the men were very personable. Service: Installation
Missy History
Jun 14, 2022 Report
It's not always easy to feel good about needing a new HVAC system but Sig Cox made it work. James and Brandon were skilled, pleasant, and professional. Doug came to the house before and after to see the project and the financing completed. Window units were installed to get me through the days ahead of the install. I've been with Sig Cox for several years for HVAC maintenance and Abby in the office is always there to answer questions about my account. Thanks to all. Your good work so appreciated.
Sarah Anne Steadman
Jun 10, 2022 Report
Working with Doug was easy and he was very professional and helpful. He worked hard to get us on their schedule quickly! Our techs who installed our new units were very timely and professional as well! We would recommend SigCox to anyone looking to have work done well and reliably. Thank you!
Lloyd Duncan
Jun 10, 2022 Report
The technicians Matt and Josh did a great job removing my old unit and installing my new one. They were very professional and answer all my questions. Showed me what they had done and installed my new thermostat. I'm glad I chose them to do the job. Doug, was also very helpful showing us what each units available had to offer. Although, we didn't get the unit we wanted due to time and some misunderstanding, we are very satisfied. This is day one of many hot days ahead 06/09/2022, and we feel ready for it.