I have been with the plumbing maintenance side of Cottrell for over a decade. I recently switched…read morefrom one of the big names in the Midlands for HVAC to Cottrell, and Colten was professional prompt, punctual, and respectful of my time. Lauren was great in the office and the they offer a military/veteran discount for fairly priced work. You would be doing yourself a disservice if you didn't at least get a HVAC or plumbing quote from them when repairs, replacement, or maintenance is needed.

Had a small sewer drain block. They came out and fixed but did not replace my backflow valve…read moreclaiming they don't do that anymore. Found out it is code to have one so I had to get another plumber to install a new one. They never answered my inquiry into this. Would not use them again or recommend them. In fact I just replaced my HVAC unit and if they had done right with the plumbing issue I would have got it from them.

Anthony came out and put in a Goodman AC and Heating unit at an affordable price within 1 day. They…read moregave me a 5 year warranty and I'm very happy with the service. His Son Marquel came and installed a nice new wifi thermostat, and followed up and made sure everything was working good. They are honest and good people and family oriented which is hard to find these days. I recommend them, Thank you

From the owner: At Smith & Sons we specialize in heating and air conditioning. We have 20 years of experience in…read morethe business. We offer maintain and service and replacement of systems. Call us for more details. 803-754-3366.

After receiving 6 or 7 proposals for a new A/C system installation from some of the best, highly…read morerated companies in the Columbia, Lexington, SC area, we chose Killman Heating and Air. We were impressed not only by the great price but also by the honesty and straightforward communication of Adam Killman. He not only didn't try to sell us something we didn't need, but also did not promote free items that do not work; it only looks and sounds great on paper. He explained a lot about several ineffective systems that only seemed good on paper. He provided detailed explanations about the various systems he had to offer, highlighting the pros and cons of each. I verified the information he shared with us, and it was spot-on accurate. He also told us about our old system and how it was good back when we purchased it, and how the new systems outperform it. He explained what items were good and useful on a new system and things he would stay away from and not waste money on. On installation day, they started work on time and did exactly what Adam said they would do. They did their work with the utmost respect for our house and the cleanliness of their work. At the end of the day, the house was left cleaner than when they came, and they repaired things that the old installer had left behind. Great work! I would highly recommend this company to anyone needing any type of AC work done. #satisfiedcustomer

If you find yourself needing HVAC service or replacement in Lexington County, SC I cannot recommend…read morea better company than KIllman Heating & Air. They did not try to oversell me like some of the other HVAC companies and their recommendations were exactly what I needed. Recently we had some issues with the ductwork/damper and they came out the next day to inspect it and make sure the new HVAC unit was running correctly. Next day service is rare for such a minor issue. Killman Heating & Air is a class act.

From the time the Tech recognized the problem until the new system was installed, the team from…read moreCassell had been nothing but professional, accurate and considerate. We are very pleased with the service, price, value for the work and response of Cassell Brothers. This was our second unit total replacement, the last being in 2020. Reading recent reviews one could be scared away. That is not our opinion. Justin identified the inoperable problem in our 40-year old unit, got us in immediate contact with Doug (who came out on a Saturday). The replacement team of Dave, Carl, Donnie, Walter and Favian removed the old system (including ductwork) and installed the new system in less than 6 hours (in an attic over 95 degrees). They cleaned everything, went through the operations steps with us, and followed up two days later to complete one task. I would have given them a five-star but for one item still not resolved with our Trane unit from 2020--requires another Trane specialist. We would use them again and will carry the Comfort Club program for the forseeable future. Thanks Cassell for getting us back in comfort before the heat really builds!!

I am writing this to warn other homeowners in the Midlands to check the stickers on the units…read moreCassell Brothers installs. On 12/31/2025, I contracted and financed $6,280 for a top-of-the-line, high-efficiency Rinnai SENSEI RX (0.98 UEF) condensing tankless water heater. Instead, they installed a much cheaper, standard-efficiency RE199e (~0.81 UEF) unit. The unit they installed is a base-model, non-condensing unit that typically costs $1,000 less than what I paid for. Because it's the wrong unit, I also lost out on a $350 Dominion Energy rebate and have a $600 Federal Tax Credit liability. I brought this to the manager's attention three weeks ago. Since then, I have been repeatedly ghosted and ignored. They are happy to take premium prices for builder-grade equipment, but they refuse to answer the phone when caught. I have officially opened a merchant dispute with GreenSky and filed formal complaints with the SC Residential Builders Commission (LLR) and the SC Department of Consumer Affairs. Save yourself the headache and go with a company that actually installs what they invoice you for. Check your model numbers! ***UPDATE*** finally after I reached out to the BBB, the Department of consumer affairs, wrote a yelp review and a google review, I finally got a phone call back. funny how that works. They called my brother and he declined their phone call because it was a New York number. So they called my wife to get ahold of me. Somehow they think they can say they tried reaching out to me "multiple times". if that is the case Robbie, show a screenshot showing where you tried to get ahold of me? I will post all of my evidence showing you bait and switched units on me. Funny how I did not even get an apology or explanation of what happened when your manager James called me this morning, he just said, " instead of trying to the math, we will swap out for the correct unit" and wanted to schedule a time. ***UPDATE*** I have reached a settlement with Cassell Brothers. In the end they did the right thing and corrected the situation. Even though there was a lot of back and forth in the end, everyone stayed professional and I am grateful for that. I appreciate that management stepped up to make it right. I Consider this matter fully resolved and appreciate the company taking the necessary steps to endure I was taken care of as a customer.

Mr. Richard services was over and above my expectations. The quality of service and professionalism…read morewas excellent. I would recommend R&G heating and cooling to all home owners.

From the owner: The Best You Can Get in Columbia: We ofter 100% Satisfaction Guarantee*…read moreSafety-conscious HVAC and refrigeration technician who effectively manages a large volume of, work orders for both residential and commercial properties. Focused delivering quality work, and exceptional customer service. Strong work ethic and flexible schedule. Willing to relocate: anywhere authorized to work at the US for any employer. diploma and certificate HVAC

I have had some issues with some heating and air conditioning service companies in the past and…read moredecided to give this company a try. Well after the challenges with getting honest and reliable work done from other places, Southern Comfort Appliance has restored my faith in getting my hvac repaired. They are very knowledgeable and focus on great customer service and quality service. Thanks Josh! You have just acquired a happy and loyal customer!

From the owner: Providing Heating and Air Services to the greater Columbia area. Where our quality means your…read more Comfort. We offer free diagnostic with repair, Free Estimates, 24hr emergency service, single and annual maintaince plans to get the most out of your system. We also offer many options for air quality/air purification, surge protectors, Attic insulation call us today and join our team.

I hired them to do my HVAC inspection on a new home purchase. Jody was exceptionally knowledgable,…read moreprompt, and thorough in his work. He provided me with a detailed explanation of the HVAC system, photos and a written report. My step-son is an AC pro in Las Vegas. I sent Jody's report and pictures to him for a second opinion. He confirmed everything Jody wrote up and said that his company couldn't even come close to the price Allgood Mechanical quoted. Jody is now my "go-to" AC guy.

First time to use this company. Everyone from Brooke at the office, to Chris and Jay (technicians),…read morewere very helpful and professional. They spent an hour and a half inspecting our units- crawling into the attic space and under the house. (Tiny areas.) Very pleased!

Past Repairs, install of new system and ductwork great fast service! Brent is a great trustworthy…read moreowner of a small local company ! Highly recommend Rescue HVAC

We purchased a "fixer upper" home and knew there were HVAC issues. I contacted Dr. Cool, and was…read moreimmediately impressed with their customer service. They inspected the system, and the technician could not have been better! Smart, communicated well, and never tried to "upsell". He took photos of all areas that needed attention, and explained things very well. The same technician came back to do the repairs, and we couldn't have asked for a better experience. I highly recommend Dr. Cool!!!!

Very timely and explained everything they did. They looked over all my system and ensured it runns…read moregreat. Now i am getting ready for them to start my winter service.