HVAC reviews in Doraville, Georgia

We had an outside pipe burst after a freeze night. I called GCO and they came out only a few hours later. They helped with shutting off the water and replaced the pipe quickly. Great service.

Very professional and gave us multiple options to get the issue fixed. I was glad they were able to work with our budget.

Jonathan and his crews were fantastic. They replaced all of the plumbing, electrical and HVAC system in a home I remodeled. The work was done in a very timely and professional manner. I’m so glad that I found this company and highly recommend!

Eli and his staff are so responsive and unbelievably reliable! When they say they will be there, they exceed my expectations and always keep me updated on the status of their arrival. Eli is professional and incredibly knowledgeable and extremely fair in pricing.
I can not be more impressed with GCO!

Whenever I have an issues with Electrical, plumbing, HVAC of gas services I go to GCO! They are amazing. The entire staff is helpful, knowledgeable and most of all dependable. Our lates project was to use that for all the services in a new house we are building and I am so glad I went with Jonathan at GCO! Great experience and I have recommended them to many friends, neighbors and business partners over the years and will continue to do so.

GCO IS MY GO TO FOR ALL MY HVAC, PLUMBING AND ELECTRICAL NEEDS! Great team, the absolute best service and most reliable company I have worked with. They stand behind their work and I would recommend them to anyone!

GCO is always great. They do really great work and for a reasonable price on top of being very kind, respectful, and reliable. We've used them 4 times and will continue to use them for projects and repairs both big and small. It's really comforting to have someone that we can trust with our old homes electrical as well and we look forward to using them to update our old fuse panel.

Very fast and professional service. Not a simpple installation, I had a very old AC system. Everything was redone, upgrated. My AC unit looks so neat, completely insulated, working quietly. Extremelly happy with the unit and service provided! Jonathan's team are professional, friendly, clean!
Jonathan re-did my plumbinig! My Water heater! And now AC unit.
They are amazing!

Quality work, great communication from start to finish, and people you can trust. After our unit went out, they came out and quickly installed a new high efficiency heat pump and got us back to comfort!

I had GCO Mechanical & More Inc. come out to my rental property to fix a gas leak, and they were fantastic. They quickly found the issue and also identified a few other things that needed to be corrected. I ended up adding some electrical and HVAC work to the job, and they handled it all seamlessly—saving me from having to call out three different companies. The owner, Johnathan, was excellent at communicating throughout the entire process, keeping me informed every step of the way. Their efficiency, professionalism, and quality of work were top-notch. I’ll definitely be using them again! Highly recommend!

This company is outstanding. Its servicemen are the REAL DEAL! They’re pros, and they get the job done efficiently and correctly. They are kind and wonderful to work with. Their business office is a well run machine. Scheduling, estimates, payment and receipts are smooth as glass! Great people! Great company! Great appliances!

GCO did a fantastic job, start to finish. The estimate was reasonable, with the best plan for our electrical work compared to what we heard from other companies. Jonathan and his team approached the work professionally and with great respect for us as homeowners. They were very careful and proficient, and I would trust them for any future projects we have.

Outstanding service. Responded quickly and efficiently. Highly qualified owner and technical support that quickly found HVAC problem as well as providing preventive maintenance--all for a very fair price. One of the most professional and competent companies I have found in my 72 years. The job was done right!

I cannot rave about our experience enough with GCO mechanical and their owner Jonathan. Our garage door broke and in order to put a new one in, we needed to have an outlet installed and fast! Even though it was last minute, Jonathan and a team member came right over! We live in a very old house so naturally a simple outlet installation turned into a whole electrical ordeal! Jonathan was honest, fair, and took so much time to explain to me what was going on and what he needed to do to make it right! We recently bought this house and have many HVAC, plumbing, and electrical needs. I will be going to GCO for everything from now on!

GCO did an amazing job! Our A/C went out on Sunday. They came out Tuesday morning and gave us an estimate. Wednesday night we had a nice cool house again. His team is very clean and organized. They made sure to check everything before they left. The level of service we received was far beyond our expectations. We are very pleased with the price and craftsmanship.

I recently had the pleasure of working with GCO Mechanical for an HVAC FURNACE installation and service, and I couldn't be more impressed. From start to finish, their professionalism and expertise were exceptional. The team arrived on time, was courteous, and took the time to explain every detail of the work they were doing. They diagnosed and resolved an issue with my system that several other companies had overlooked, and the results were immediate.

I was introduced to Jonathan and GCO when a tree fell on my house and ripped out my electrical service. They were a referral from a contractor friend for a second opinion. They came in a half the cost of the first quote and clearly showed me why the first company was taking advantage of me. They obviously won the bid and did an amazing job. They were great communicators, fast workers and left everything clean. If you are looking for an honest electrician or HVAC company, I highly recommend!

Jonanthan and his team are completely awesome. I've been using his services (HVAC, Plumbing, Electrical, Gas) for many years. He's very responsive and priced competitively. He just installed a Generac (from phone call to fully installed) in under two days, just before a storm hits!! Greaatful for his excellent service over the years

I’ve had multiple great experiences with Eli and GCO plumbing. He’s very responsive and courteous. The first visit Eli and crew replaced my water tank with a tankless and he was very thoughtful and communicative the entire time. I’ve since used Eli a couple more times for plumbing jobs and have been very happy with his work. GCO is definitely my go to for plumbing work and I think I’m going to now start checking out their HVAC and electrical services too.

I found GCO through another contractor and decided to reach out while also considering more than five other contractors. After my very first conversation with the owner, Jonathan, I immediately felt at ease. The way he clearly explained the process, walked me through what his team would be doing, and took the time to answer all my questions made a huge difference.

Honestly, GCO is the best at what they do. Not only did they do a fantastic job repairing the HVAC system in my main house and installing a brand‑new unit for my basement, but they also corrected mistakes from a previous plumbing job, something they didn’t even have to do, but went above and beyond to fix.

Their communication was excellent, they were flexible with scheduling, and they welcomed every question I had with patience and professionalism. It’s rare to find a team that delivers both high‑quality workmanship and exceptional customer service, but GCO truly does both.

Going forward, they are my go‑to for HVAC, plumbing, and electrical work. I highly recommend them to anyone looking for a trustworthy, skilled, and customer‑focused team. You won’t be disappointed!

Thank you so much, Jonathan and the team!

Great Service !!!👍🏽