certified company
Based on 700+ reviews
Our Certification Process
Best Pick Guarantee
Verified License(s)
Verified General Liability Ins.
Verified Workers' Comp
9th year as a Best Pick Call
"As a four-time Top 25 Small Business of the Year winner, Casteel understands how to take amazing care of its customers. We were awarded The Best Contractor to Work For by The NEWS, an HVAC industry publication, and we were also awarded Trane's Titanium Club status in 2010."

John Hillis | Owner & President
Company Information
Services Offered
Casteel Heating, Cooling, Plumbing & Electrical replaces, repairs, and services all residential heating, cooling, plumbing, and electrical issues. The company also offers up-front pricing.
Casteel honors all manufacturers' warranties and offers labor warranties, extended warranties, and various warranties of up to ten years.
Company History
The company is family owned and operated and has been serving metro Atlanta since 1987. John Hillis is the current owner and president of Casteel.
The company is a North American Technician Excellence (NATE) Certified Contractor and a Trane Comfort Specialist and was awarded Trane's Titanium Club status in 2010.
Employee Information
According to John, all of Casteel's employees are industry trained, rigorously background checked, and regularly drug tested.
Areas Served
North Atlanta, Cherokee, Dunwoody/Sandy Springs, Gwinnett/East Metro, Roswell, Alpharetta, Johns Creek & Cumming, Cobb/Marietta
A selection of 700+ homeowner reviews:
“Casteel repaired our air conditioner. They came out super fast, and it was a busy time of the year. They were fast, efficient, and they fixed the problem. I'll give them an A+.”
“They did preventative maintenance on my air conditioner. I have a service contract with them. They were on time and educated me a lot on everything they did step-by-step. They were excellent.”
“We've been using Casteel, and they've been doing a great job. They serviced my air conditioner and heater. They show up on time, knock it out, and leave. I would absolutely recommend this company, and I'd absolutely give them an A+.”
“Everything was good. They replaced a fan motor on our air conditioning system. They were quick, and they got the job done in a day. I couldn't have asked for better service—A+.”
“We had quotes on everything, but the service they did was on our air conditioning. I liked their responsiveness and professionalism. I'd give them an A+.”
“Everything was good. They just did a tune-up for me on my HVAC. I liked that the experience was complementary. I'd give them an A+.”
“They did work for me several months ago. They did HVAC maintenance for me. They were very thorough. They get an A+.”
“They did heating and air work for me. They were on time. They did the job thoroughly. The technician that was there was friendly and professional. I'd give them an A.”
“They did A/C work. I was selling my house, and they did a refresh on the unit. They were just very professional and very knowledgeable. I'd give them an A.”
“They repaired an air conditioning unit. The technician was knowledgeable and friendly. I'd give them an A.”