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23 Years
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Emergency
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Expert HVAC Repair and Installation Services in Lilburn, GA
Gill Heating & Air Conditioning was founded in 2003 with a commitment to delivering customer-focused HVAC solutions. Our team of professionally trained technicians undergoes rigorous background checks and drug testing to ensure reliability and safety. We specialize in repair, service, and installation of heating, ventilation, and air conditioning systems, prioritizing energy efficiency and cost savings for our clients. Our 24/7 emergency service guarantees rapid response times, even during peak demand periods. We emphasize transparency, offering upfront pricing and a satisfaction guarantee that includes refunds if expectations aren't met.

With expertise in all major HVAC brands, we provide tailored solutions for residential and commercial properties. Our annual maintenance plans help extend equipment lifespan while reducing energy bills through systematic efficiency checks. We maintain industry-leading standards through continuous technician training and adherence to safety protocols. Our reputation as Atlanta's trusted HVAC provider is built on over two decades of consistent service excellence. Customer feedback consistently highlights our punctuality, technical proficiency, and fair pricing structure.
Services
Air Conditioning Repair Heating System Installation Annual Maintenance Plans Indoor Air Quality Emergency HVAC Service Thermostat Repair Ductwork Modification Furnace Replacement Heat Pump Services System Diagnostics
Details
  • Year established: 2003
Highlights and features
  • We offer 20+ years of HVAC expertise with certified technicians
  • Our team provides 24/7 emergency service with rapid response times
  • We guarantee satisfaction with upfront pricing and refund options
  • Our technicians undergo background checks and continuous training
  • We implement energy-saving solutions for reduced utility costs
What people say
Quick response times Knowledgeable technicians Fair pricing 24/7 availability Long-term reliability
Services
Air Conditioning Repair
Our certified technicians diagnose and repair all air conditioning system issues with same-day service availability. We use advanced diagnostic tools to identify refrigerant leaks, compressor failures, and electrical malfunctions. Customers benefit from immediate cooling restoration during peak summer months with transparent pricing and repair guarantees.
Heating System Installation
We install high-efficiency heating systems with proper sizing calculations to ensure optimal performance. Our NATE-certified technicians handle complete system replacements including ductwork modifications. Homeowners receive energy consumption projections and manufacturer warranty registration for long-term reliability and cost savings.
Annual Maintenance Plans
Our preventive maintenance program includes 18-point system inspections and performance optimizations. Regular servicing extends equipment lifespan while maintaining manufacturer warranties. Customers receive priority scheduling and discounted repair rates as part of our comprehensive maintenance agreements.
Indoor Air Quality
We offer whole-house air purification systems and humidity control solutions for improved respiratory health. Our IAQ specialists install HEPA filters, UV germicidal lights, and energy recovery ventilators. Commercial clients benefit from OSHA-compliant air quality improvements for healthier work environments.
Emergency HVAC Service
Our emergency response team operates 24 hours daily with average response times under 2 hours. We prioritize critical system failures affecting comfort and safety. Customers receive immediate diagnostics and repair options with no overtime charges for after-hours service.
People
Gurtej Gill
Founder
Gurtej Gill established the company in 2003 after 15 years of industry experience. He oversees technical operations and maintains quality control standards across all service departments. His expertise in refrigeration and HVAC systems ensures adherence to industry best practices.
Questions
What HVAC services do you offer?
We provide complete HVAC solutions including repair, installation, and maintenance for residential and commercial systems. Our services cover air conditioning, heating, ductwork, thermostats, and indoor air quality improvements.
Are emergency services available?
Yes, our 24/7 emergency service responds to critical HVAC failures with average arrival times under 2 hours during peak seasons.
Do you service all HVAC brands?
We work on all major HVAC brands and models, with technicians trained on both legacy and modern systems for comprehensive repair capabilities.
What maintenance plans are available?
Our annual maintenance agreements include bi-annual system inspections, priority scheduling, and discounted repair rates to maximize equipment efficiency and longevity.
How do you handle pricing estimates?
We provide transparent, upfront pricing with no hidden fees. Our technicians explain all options before performing any work to ensure informed decision-making.
What areas do you service?
We serve the entire Metro Atlanta area including Lilburn, Gwinnett County, and surrounding communities with prompt HVAC solutions.
Reviews (7)
Tonie Tobias
Jun 15, 2022 Report
Very reliable great customer service the guys that came to fix my AC were awesome quick and helpful will use the company again
Joseph Gill
May 21, 2022 Report
We didn't end up using these guys, but their quote was %20 higher than the other 2 quotes we got. I bet they are good, but not gonna be throwing away a couple extra thousand dollars for no good reason.
S. B.
Mar 07, 2022 Report
I have had my new HVAC unit for almost a month now and am very pleased. More importantly I would like to talk about the actual company GillAir. I found GillAir to be incredibly honest. From trying to repair my old HVAC before a total replacement, to the truth, honesty and compassion they showed towards me on units in my price point. No one wants to spend this kind of money but after receiving other bids I can assure you these guys were fair and honest and installed a great system for my price point. I would highly recommenr relieving some stress from your life and calling GillAir the next time you need anythin heating or air related. I would not hesitate to use them in the future!
Jesse Walden
Aug 17, 2021 Report
Had my A/C go out on a Saturday night in July, which obviously isn't something any homeowner would want. I called Gill Heating & Air that evening and left a message. I got a call back within an hour, and after explaining my situation, the rep told me they would try to get a tech out the next day (Sunday) and would call me in the morning. Long story short, a tech is out at my house by early Sunday afternoon, and my issue was fixed within a couple of hours.

The tech, Rakesh, was incredibly friendly and knowledgeable, and he even took the time to explain how the various components in my A/C system worked while he was fixing the issue. Considering it was an emergency call involving a part replacement, the cost was also very reasonable. After dealing with numerous HVAC companies in the Gwinnett area, I think I'll be giving Gill another call the next time I have a problem.
Michael C.
Jul 30, 2021 Report
The Gills Heating and Air Condition folks are an incredibly reliable and knowledgeable team with one more important characteristic. They are also super nice people. Oh, and they respond to requests even after hours. Note the exchange I just had on one of the hottest days of the summer / when I'm sure they were stretched to the max. Note the time line from my text to the the job being done. I promise you, you'll never have the same great experience with any other team. Gill Heating and Air RULE! Thanks guys / enjoying a very cool evening. Donna and Michael Coleman
David Benoit
Dec 21, 2020 Report
When I bought my home in Lilburn, the system was old, like 20+ years old. We knew it needed an upgrade. I had 2 other companies give me quotes on our single system complete replacement. I called Gill and they came over like 30 minutes later and gave me a cash price quote far below what the other companies offered.like substantially lower! The other 2 companies were "upselling" me on systems, Gill actually "down-sold" me believe it or not! We had a brand new complete Carrier system installed the next day. It's worked flawless since summer of 2018!
Jim R.
May 05, 2020 Report
Excellent service. Quick, thorough and very professional. Got back to me when I called very quickly and came first thing the next morning.