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42 Years
experience
Emergency
services
Your Trusted HVAC Partner in Killen, AL
Gist Service Co has been a locally owned and operated HVAC business serving the Shoals area for over 40 years. Specializing in heating, air conditioning, ductwork, and gas line services, we cater to both residential and light commercial clients. Our team of certified technicians prioritizes quality craftsmanship, energy efficiency, and customer satisfaction. With decades of industry experience, we offer tailored solutions including system installations, emergency repairs, and preventative maintenance.

Our commitment to integrity and community focus has established us as a trusted leader in North Alabama. We guarantee reliable service, transparent pricing, and 24/7 emergency availability to ensure year-round comfort for our clients.
Services
Air Conditioning Heating Systems Ductwork Solutions Gas Line Installation HVAC Maintenance
Details
  • Year established: 1984
Highlights and features
  • We offer 40+ years of localized HVAC expertise in North Alabama.
  • Our certified technicians ensure precise installations and repairs on first visit.
  • 24/7 emergency services available for urgent heating and cooling needs.
  • We guarantee satisfaction with transparent pricing and quality workmanship.
  • Specialized in energy-efficient systems that reduce long-term operating costs.
Services
Air Conditioning
Professional AC installation, repair, and maintenance services ensure optimal home comfort. Our technicians handle system sizing, smart thermostat integration, and emergency repairs for all major brands. Regular maintenance extends equipment lifespan and improves energy efficiency.
Heating Systems
Expert furnace and heat pump installation, repair, and maintenance services. We offer energy-efficient models with proper sizing for Alabama's climate. Our team addresses pilot light issues, thermostat malfunctions, and carbon monoxide safety checks during seasonal tune-ups.
Ductwork Solutions
Comprehensive duct design, installation, and repair services enhance HVAC efficiency. We perform leak detection, sealing, and insulation to reduce energy waste. Regular inspections maintain clean airflow and indoor air quality in residential and commercial spaces.
Gas Line Installation
Licensed gas line services for residential appliances and commercial systems. Our technicians perform code-compliant installations, leak detection, and pressure testing. We ensure safe connections for stoves, water heaters, and outdoor equipment with annual safety inspections.
HVAC Maintenance
Preventative maintenance programs extend equipment lifespan and improve efficiency. Services include coil cleaning, refrigerant checks, thermostat calibration, and safety inspections. Annual heating tune-ups and seasonal AC maintenance prevent unexpected breakdowns during peak usage periods.
Questions
What areas do you serve?
We serve Killen, Florence, Muscle Shoals, Tuscumbia, Sheffield, Rogersville, and surrounding areas in North Alabama.
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency repair services for urgent heating and cooling system failures.
Are financing options available?
Yes, we offer flexible financing options for HVAC system replacements and major repairs.
How often should HVAC maintenance be scheduled?
We recommend annual maintenance for heating systems before winter and AC tune-ups before summer.
What HVAC brands do you work with?
We service and install all major HVAC brands, focusing on energy-efficient models with manufacturer warranties.
Do you handle new construction HVAC installations?
Yes, we provide complete HVAC system design and installation for new residential and light commercial construction projects.
Reviews (3)
Jennifer L. Clemmons
Jun 27, 2018 Report
Thanks for getting my air conditioner running right. Quick service and the technicians were very good.
Keith Owsley
Jan 24, 2017 Report
I called about 4:30 in the afternoon. Travis was at my home by 4:45 and had my furnace running by 5:00. He was friendly and professional. Did a great job. Thank you.
David Rickard
Nov 19, 2015 Report
I met Steve a while back while working for Killen True Value. I liked him from day one and from there we became friends. You treat people right and you get the same in return. Steve to me is a friend indeed and if he needs me I am here. I'm glad to call him my friend. Thanks for being mine too Steve.