Lex - Air Conditioning, Heating, Plumbing, Electrical

Leif-X Mechanical Llc works out of Dallas Texas and keeps its focus on HVAC systems for homes and businesses across the city. They handle heating ventilating and air conditioning jobs plus related plumbing work in both residential and commercial settings. The crew stays active on local projects that range from straightforward fixes to bigger system installs and they know the demands of Texas weather on equipment that runs hard through long summers and sudden cold snaps. Homeowners in the area count on them for reliable service when units break down or need updates to keep indoor air comfortable year round.

Their technicians handle specific tasks like putting in two high end Trane AC units with full warranties or sorting out problems in ductwork that affect airflow and efficiency. Paul and Justin have been noted for clear explanations during electrical and cooling checks while Jose showed up fast for repairs and walked through every step so the customer understood the fix. Alex from their plumbing side went further on calls by spotting extra issues during a thorough check and taking care of those too instead of stopping at the first problem. The team keeps jobs clean respects the property and follows up to make sure everything holds up after the work is done.

Customers keep coming back because the quality of the work stands out with solid results on complex cooling and duct jobs that others might miss. They score high marks for how well the repairs last and how the crew explains options without pushing extras. Speed shows up in quick responses under a day and fair pricing comes through on bigger installs that include warranties. Communication stays direct so homeowners know what is happening at each stage. DIRT Score 5.0 from 2457 reviews on Finds.

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“In August 2025, I paid $36,000 for two top-of-the-line Trane AC units from Lex Air. It included a 10-year warranty. It included a 2 year labor warranty. The first two semi-annual services were supposed to be free. For that reason, I wasn’t going to join Cool Club until August, 2026. Our downstairs unit failed with a critical error at about 11:54 pm on Friday, June 26. On Saturday morning, I called to schedule an emergency repair. Their stupid AI Sal answered and before he would try to schedule me an emergency repair, he asked if I was a member of Cool Club. Since I wasn’t, the first repair option was Monday, June 29. On June 29, I joined Cool Club, which meant that I paid for about 2 months of a service I shouldn’t need. On June 29, the technician showed up at about 10 am. At about 1 pm, he diagnosed that the control board needed to be replaced, but he could not order the part without a second technician coming out and confirming the diagnosis. The second technician didn’t show up until about 5:30 pm, which meant that even if he agreed with the diagnosis, the part wouldn’t be ordered until Tuesday morning because for some reason, Lex Air technicians can’t order a part after 5 pm. My wife took Tuesday off from work so that she would be there when the part arrived. We called Lex and were told that the part wouldn’t arrive Tuesday, hopefully on Wednesday. My wife took Wednesday off from work, but when we called Wednesday, we were told the part was ordered with three-day shipping and wouldn’t arrive until Monday because Friday was a holiday. They never offered me the opportunity to pay for expedited shipping so that the part could be there Wednesday or Thursday. After paying $36,000 for two units, we were going to have to go 10 days (Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, and Monday) without air conditioning. We found out Monday morning that the part was scheduled to arrive between noon and 2 pm. The technician would pick up the part when it arrived and come out. At 7:31 pm, they called and said that my technician was stuck at another home and wanted to know if it was OK if we were the first scheduled service on Tuesday, sometime between 8 and 10 am. My wife had to take another day off because I’m in the middle of training and can’t be out. They got it running Tuesday evening and had to come back out Wednesday to re-run some cabling. Finally, I have left 2 separate requests for a service manager to call me. No call.”

“Lex was fantastic! Such a smooth process and took the time to really explain what was going on with our A/C unit and the issues with our ducts. Excellent follow- up as well. I have never seen a company be so clean and respectful! Paul was our go to Person and he was fantastic! Justin with the electrical portion was also fantastic! Thank you Lex! Five star all around!!!”

“Jose was excellent! He explained everything thoroughly and was so friendly. They also showed up in less than 24 hours to do the repairs. I highly recommend LexAir. They are a nice company that actually cares about their customers. That’s saying a lot these days too. We are so happy and cooled off. Thanks so much!”

“I had an excellent experience with Alex from Lex Plumbing. He went above and beyond to ensure everything was done correctly. Alex conducted a very thorough analysis, not only fixing the original issue but also identifying and resolving other problems he found along the way. He took the time to explain each and every detail clearly, making sure I understood what was happening and why the repairs were needed. His professionalism, attention to detail, kindness, and willingness to help truly stood out. I greatly appreciate the quality of his work and his honest, thoughtful approach. I highly recommend Alex and Lex Plumbing to anyone looking for reliable, knowledgeable, and exceptional service. He really did an exceptional job—I can actually notice the difference after the fix. Thank you so much, Alex. I truly appreciate your help.”

“Our Technician was very informative and professional from start to finish. He left no question unanswered. He walked us through every procedure and gave great tips on how to prevent future issues our systems. The best part is the $25 a month service plan! It really helps and they really honor it! Highly recommend”