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.

Upcoming Father's Day weekend and AC broke on us. We took a chance and called Killman. They were so…read moreresponsive and where others said they couldn't fix the unit until 5 days later, Killman was out the next day installing the new unit. The owner came by and met us and was so genuine and friendly. Just good people. We had a slight issue afterward with a blocked drain. Called them and they came out the next day (on a Saturday morning no less) and fixed the issue. Would highly recommend this company.

WOW! I cannot say enough wonderful things about Mr. Andy Killman and the entire team at…read moreKillman Heating & Air. From beginning to end, our experience was absolutely flawless. From the very first estimate, we knew we were dealing with a company that takes pride in doing business the right way. Everything was explained clearly, every question was answered, and every promise that was made was kept. What they tell you is exactly what you get - and that is incredibly refreshing these days! The office staff was phenomenal: friendly, professional, responsive, organized, and genuinely helpful. The installation team was equally impressive. They arrived prepared, worked professionally and efficiently, treated our home with respect, and made sure everything was completed exactly as promised. Mr. Andy Killman deserves special recognition. His professionalism, honesty, knowledge, and commitment to his customers are reflected throughout the entire company. You can tell that Killman Heating & Air is not just interested in making a sale - they are interested in earning your trust and keeping it. There were no surprises, no excuses, no broken promises, and no wondering what was going on. From the estimate, to the office staff, to the installation and completion of the job, the entire experience was seamless. We have dealt with many companies and contractors over the years, and Killman Heating & Air truly stands head and shoulders above the rest. This is how a business should be run! If I could give them 10 stars, I absolutely would! If you're looking for a heating and air company that is honest, dependable, professional, knowledgeable, and actually does what they promise, call Killman Heating & Air. Mr. Andy Killman and his entire team have earned our highest possible recommendation. An AMAZING, AMAZING company from start to finish!

EXTREMELY DISAPPOINTED-BEWARE OF PRICING PRACTICES!…read more On 5/22/26, I had a technician from Cassell Bros come to my home to inspect my breaker box. Initially, I was told that five breakers needed to be replaced. The technician stated he had to leave to purchase them because they were "too expensive" to keep stocked in the van. At that point, I was quoted $2995.00 for the work. After returning and beginning the repair, the technician discovered an additional breaker that needed replacement. Interestingly, this breaker was available in the van. The total was increased to $3594.00. When I asked about the cost of the breakers, the technician showed me what appeared to be a pricing image indicating the breakers cost $599.00 each. Trusting the information provided, I approved the work and paid the invoice. The entire visit lasted roughly 30 minutes. Later that day, I noticed the breaker packaging left behind in my recycling bin. Out of curiosity, I researched the exact breaker models and found them listed at Home Depot for approximately $75 each. To verify, I personally went to Home Depot with the packaging information and confirmed the breakers were indeed priced at $75.31 a piece (I have pictures as proof). Concerned about the significant markup, I contacted the company seeking an explanation. Initially, I was told no manager was available and that someone would return my call, but I did not receive a call back. After calling again, I eventually spoke with someone named Broderick. During the conversation, I was told the company is " a business trying to make money." I was offered a 20% discount, which I did not feel adequately addressed the issue. I was also told the only other alternative, and I quote was, "I CAN COME BACK TO YOUR HOUSE AND PUT THE OLD BREAKERS BACK IN." Another concern is that the invoice provided was not itemized, making it impossible to see the breakdown of parts and labor charges. What reputable company doesn't give you that information? One that is not practicing ethical business. I understand businesses need to make a profit, but this experience left me feeling misled and taken advantage of. If it hadn't of been for their "smart" technician leaving the packaging in my trash, I would have never questioned this service. I encourage anyone considering this company to ask detailed questions, request itemized pricing upfront, and compare cost before authorizing repairs.

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.

To be called "rescue" is a lie when you can't fit in an appointment within 48hrs with 95+ degree…read moretemperatures.

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!