GSM Services

Everything was seamless! Great job

I called and asked about having an estimate done for spray foam insulation. They said they don't offer that because it "isn't energy efficient". I find that extremely hard to believe.

GSM did an excellent job on my crawl space. They kept in touch with me so I knew what was being done. The work was done neatly.

Quick response, great price, excellent work and great communication. I will be working with this business again on more of my houses.

Smoothly. Technician is knowledgable and professional; inspection procedure is thorough.

Very well done, prompt and effective.

I hired GSM Services to replace my A/C unit and furnace with a newer, upgraded system. A few weeks ago Kelly came to my house to give me an estimate for a new heating and air system. He was on time and very professional. He surveyed my existing system, took measurements of my house, and did some calculations to determine exactly what type and capacity system that I would need. He showed and explained to me several options as well as their prices. He wasn’t pushy as he left in order to give me time to review the different options before making my decision. I called the office the next day with my decision and to set up a date and time for installation. Today (May 22) Kyle and Craig showed up on time and were extremely professional as well. They worked from 8:30 to 5:30 completing the replacement of my entire heating/air system. The field team leader also showed up just to ensure that everything was going smoothly. They were very helpful in answering any questions that I had throughput the day and they took the time to explain to me about the new system after installation was complete (I.e. how to operate the new programmable thermostat). Overall, it was a great experience and I will definitely use them again.

Excellent work done by Scott. Everything explained. Cleaned debris out of units. Wore booties while in our home. Changed filters and showed me a long list of all the other maintenance he did on the units. Have used this company for over 25 years.

This was my spring check up on air conditioner before running.. Everything went very well. Everyone should have a service contract with GSM they are the best. I have tried others but they do not compare to GSM.

This service was very good. Every employee was professional and thorough.

They were professional and very punctual.

We have a contract with them. They are very quick to respond. They are always there. They did what they said they were going to do, and what I felt was needed. They addressed my issues pretty well. Anytime I've had any issues with my questioning, one technician's capacities against the company, they addressed it pretty well, and they sent me somebody else. There are discrepancies between the technicians.

They come out and service twice a year.

I'm pretty picky and GSM exceeded my expectations on every level. They truly care about their customers. Five stars.

I've just been really pleased. The only thing that I kind of have a question about. They said the supervisor would come back out and show me pictures of what they had done under there after they got finished. He had some kind of a conflict and he didn’t come. I have to call and ask them to have him come. But I have the number of the man who talked to us at the begging and he is the one who told me always get pictures when somebody finishes, not just when they start. I think he will come or send whoever is supposed to come. I am not worried about that.

We had some questions about some problems under the house. A man came out and explained to me what they could offer to try to solve those problems. They call it the doctor energy specialist or something, I don?t know. It?s about removing moisture and other things from under the house and making sure the ducts are properly attached and that they are insulated properly. That the house insulation is proper and they sealed most of the vents to keep the wet air from coming in. They put in a dehumidifier and all that stuff. They did a large amount of work. They put in a new moisture barrier and corrected some problems that we already paid somebody to do and they didn?t do. They even attached the dryer duct, which wasn?t attached and the air was going out all under the house. They were very very good. They did what they said. They took all the trash and everything they found out from under there. This whole experience has been a nightmare. Those people at GSM were super. The inspection he did not charge us for, but we put an amount down on the work they were going to start doing. It was excellent because he went under the house, he took pictures of all the things he was going to tell me about, and then he explained the different treatments that were available and the prices for those treatments. And what particular things they would correct. It was very clear and he was very good about answering my questions. He seemed very experienced.

I guess the price alright. It's about what we paid in Charlotte with another company, maybe just a tiny bit less. But I guess it's the what the prevailing rate is. We had somebody else to do the work, and they didn't do; and we paid them more. We have signed up to use them for our maintenance service for the furnace and air conditioner.

They did a fantastic job. The price was reasonable. They called 20 minutes before they arrived to let me know they were on their way. Every time they would come into the house they would but on booties. They carried out all the old equipment and they said they recycle it, that was a plus. They explained everything to us. Two days after we were trying to figure out the thermostat and I think we messed it up. We called them and explained we couldn't get it set to 76 degrees and he said he would be out, again he called us ahead of time and told us he was on his way. When he got here he ran us through it, he was so nice. Every six months they come here and check everything, crawls under the house and checks the heater and the connections. If you have questions they answer you, their very courteous. They don't treat you like a fool, they teach you what you should know. They are efficient and pleasant.

I called GSM inquiring about their HVAC and insulation services. I also asked if I could have someone perform a Manual J load calculation (surprise to me, the Manual J calc was free!) as I felt that my existing heat pump was sized too small for my home (2.5 ton dual-zone single stage heat pump for 2200sq ft 2-story house). We agreed on an appointment time, and they sent Kelly out to my house. Kelly was very nice and professional, and did a thorough job explaining what all could be done and what my options were. Due to having so little room to work inside of the mechanical closest, you would have to remove the air handler completely just to wrap all of the duct work. Since I would be removing the old air handler that was 8 years old anyway, I decided to replace the entire system with a new Amana 3-ton 18 SEER dual-zoned heat pump. Kelly also told me they could seal up the hole & the mechanical closet so that hot air could no longer enter that space as well. I agreed to their quote, and they came out a week later (it would've been sooner but GSM wanted to make sure that the new system was designed properly, so they had to architect and design the layout of the new equipment to fit the small space) to do the work. Owen and Jason came out to perform the installation. They were both very professional & thorough, and they did an excellent job with the swap out & installation of the new heat pump. When GSM told me that it would take two days to do the work, I was prepared to be miserably hot trying to sleep at night with no air conditioning. Not only did GSM bring a portable AC unit for me use that evening so that wouldn't be the case, Owen and Jason actually got the heat pump wired and working the first day so I had full AC that evening, and the portable unit wasn't needed! They also insulated the attic space & mechanical closet with spray foam and foam board so the hot attic air will no longer be an issue. All in all, my experience with GSM has been great! They've been easy to communicate with throughout the entire process, they did an excellent job with the installation of the new equipment, and now I can rest easy knowing that everything has been taken care of!

They came out because our unit was not blowing cold air. The tech found a leak in the system and scheduled a time to replace the part. He refilled our refrigerant that day which was included in the price of the part. My family has used this company for years with no complaints.

It was a very positive experience. The sales rep that came out was very helpful and easy to work with. We've also always had a very good experience with their techs.

GSM has been in business for a very long time. I know why. GSM was professional from the original contact, to the quote, to the install, the testing, and the follow up. The advisor answered my questions, and was available later for follow up questions. They gave me a range of quotes which I really appreciated and helped me make a fair comparison to other quotes I received. This company guarantees your satisfaction and comfort, and they give that to you in writing. They were willing to work with me on scheduling the installation, and kindly provided a portable unit to keep me cool overnight. The weather was in the high 90s and this was a two day job. The technicians who actually did the work were courteous and respectful of my home. I felt completely comfortable with them coming in and out as needed. Once the installation was done, they gave me good clear instructions on using the system; I feel comfortable with the programmable thermostat. They cleaned up after themselves well too. They have provided detailed information on how I can reach them with any questions or concerns. These guys understand customer service. I anticipate a long business relationship with them.

Very pleased with with staff and their work.

Excellent service and workmanship

They are very responsive and reasonably priced.