GSM A/C and General Contractor Inc.

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“⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐ 1000/10 I want to give GSM a 1000/10 for the incredible service I received. From the very beginning, they treated me with professionalism, kindness, and genuine warmth. They took the time to explain every detail of the process, answered all of my questions, and guided me through every step so I could make the best decisions. In my case, they replaced the entire AC system, including the condenser, coil, and furnace, and the experience was excellent from start to finish. You can truly tell when a company cares about doing quality work and making sure their customers are completely satisfied. What I appreciated the most was their transparency, communication, professionalism, and customer service. I never felt like they were simply trying to sell me a service. They genuinely took the time to advise me and make sure everything was done the right way. The work turned out amazing, and I am extremely happy with the results. If you’re looking for an AC company that is reliable, professional, honest, and truly cares about its customers, I highly recommend GSM. 💯 1000 out of 10! Thank you, GSM, for the outstanding work and exceptional service. I would absolutely hire”

“Excellent price and install, Daikin Fit AC and furnace. Electric bill came 2 weeks after install and already saw a decrease and not even started summer months. Very friendly and extremely accommodating. Great job guys, love the unit.”

“The company (GSM) was able to get a technician to my home very timely. My thermostat had failed and needed replacing, and the HVAC unit needed servicing. The technician was very knowledgeable and was able to make the necessary replacement and maintenance service immediately without requiring a second visit. The total cost was more than fair and very competitive. I highly recommend GSM. A 5-star company!”

“I had a great experience with GSM A/C and General Contractor Inc. From the first phone call to the completion of the job, everyone was professional, honest, and knowledgeable. They took the time to explain exactly what was wrong with my A/C, answered all of my questions, and never made me feel pressured into unnecessary repairs. The technicians arrived on time, worked efficiently, and made sure everything was running properly before they left. Their pricing was fair, and the quality of their work gave me confidence that the job was done right. If you’re looking for a trustworthy HVAC company that genuinely cares about its customers, I highly recommend GSM A/C and General Contractor Inc. I’ll definitely be using them again for any future HVAC needs.”

“I called G S M yesterday morning and got a time scheduled in the same day! Guillermo called and gave the time of arrival, came in, assessed the situation and gave advice to what needs to be done, he was professional and honest and did not suggest to repair or replace anything that wasn't needed, and today Michael came in and finished the job, he was efficient and clean, no mess left behind, Highly recommend this company, i will refer this company to my friends and family in the future. Update - 12/30/2025 Guillermo and the team came in and worked on my attic, added more insulation as well as adding insulation panels to the garage door, very professional and clean, and their price is reasonable.”

“Used them for various HVAC needs over the years. Super responsive. Excellent communication. Great service. Amazing payment system that’s the modern touch.”

“Michel and Guerrero, and others came mid of last year to install our Indoor A/C unit, and did a very good job. They also worked with our payment method. Today Michel and 2 other guys came over to replace our outdoor unit of over 19years old, they were pretty fast about it and the new unit is blowing well and really quiet. And like last year, he was kind enough to work with our payment plan. I greatly recommend their service because they will work with you and will do a great job.”

“Every time my A/C needs service, this is the company I trust. Once again, they delivered outstanding work. Technician Mijail and his helper were both professional, knowledgeable, and made sure everything was done right. You can tell they really care about the quality of their work. Highly recommend them if you’re looking for a reliable A/C contractor.”

“This team was great. I am selling my home at the moment and the buyers had some concerns that their inspector brought to their attention that they asked us to address. GSM had a crew of technicians made it out to my home within the day to take look at my system. They made the necessary repairs, sealed ducts and plenum, and checked to make sure that the system was working properly. They gave me some items to look at and consider on my next home as well. They were quick to arrive and on time, did not waste time with completing the work, and they did it for a fair price. And, they provided an invoice with pictures that I could provide my buyers to put their mind at ease. Would definitely recommend them!”

“GSM service tech was very friendly, thorough, and let me know what was going on. He worked hard in this terrible Houston heat wave. God bless him!”

“Big thanks to Michel, Guillermo, and his crew! I’ve been looking a week for someone to fix my AC and nobody was able to assist me, but GSM was able to come out and get the job done the same day. They were efficient and detail oriented. They are very knowledgeable and went extra steps to make sure my unit was working smoothly. Would highly recommend them to anyone.”

“Michel is excellent. Always helpful and super nice. I refer them to all my real estate clients and highly recommend them.”

“They are the best good price very professional I recommend them. Daikin certified and trained to install the new Japanese daikin Goodman variable speed AC. In The picture the only company from Texas attended the Japanese convention ( be the pro ).”

“Guillermo and his team at GSM A/C General & Contractor Inc. provided the best AC service and repair we’ve ever experienced. They went above and beyond—driving all the way to League City to fix our AC quickly and professionally. Guillermo is incredibly knowledgeable and took the time to educate us on how to make our system more efficient, helping us save on electric bills and reduce future maintenance costs. Exceptional service from start to finish—highly recommend!”

“Guillermo and his team were very professional. They took extra steps and made an extra visit to ensure everything was working properly. We really appreciated that he wasn’t just trying to insist we purchase an entire new unit, and instead gave us a more affordable and reliable solution. We’ll definitely use GSM again in the future, they took terrific care of us!”

“GSM is an awesome AC repair company!! I have been using them for some years! Well priced! Professional and honest!!”

“I had an outstanding experience with GSM A/C & General Contractor! From the first call to the final service, their team was professional, prompt, and incredibly knowledgeable. They quickly diagnosed the issue with my HVAC system and had it running smoothly in no time. What impressed me most was their attention to detail, honesty, and willingness to explain everything clearly. The technicians were courteous, respectful of my home, and left everything clean and tidy. It’s rare to find a company that delivers such high-quality service with integrity and fair pricing. I highly recommend GSM A/C to anyone looking for reliable, top-notch HVAC services. Thank you for your excellent work!”

“I’ve been a client since 2012. I love that I can trust the performance of his work. I can recommend him to friends and family with absolutely no worries. I’ve even recommended him to my clients and he’s made time for them adding them to his schedule. Thank you GSM you are appreciated.”

“GSM AC INC provides exceptional service when it comes to air conditioning solutions. During my recent experience, Guillermo proved to be both helpful and knowledgeable in diagnosing the issues with my system. His explanations were clear, making it easier for me to understand the various aspects affecting my air conditioning. The company offers cost-effective options and demonstrates reliability throughout the entire process. I wholeheartedly recommend GSM AC INC for their professionalism and expertise in delivering effective solutions for air conditioning needs.”

“great work and was a second call after a terrible first quote from another company. will call them first next time.”