Get matched with top heating and air conditioning pros in Quinlan, TX

"Sheldon was the technician that serviced my HVAC . He was thorough with finding where the problem was, showed and explained exactly what I needed and why I needed it. He also told me of what could occur if the part wasnâ t replace . He was very informative, knowledgeable , and sweet . I will specifically ask for him every time. This was his second time at my property , both times excellent work . Thank you"

"Everything went smoothly. The employee was on time and very professional."

"The owner called to let me know the crew would arrive in approximately 45 minutes and they showed up on time and got right to work. Jacob, the owner and I met to discuss options for additional work, which I agreed to. They started vacuuming up the old insulation and during the process I was shown pictures of the clean attic floor and informed what room they would be working on next. They sealed around all the openings in the attic to the HVAC vents, plumbing pipes, etc. All my questions were answered to my satisfaction. Once the job was complete and new insulation blown the crew cleaned up and loose debris in the garage and driveway. I am happy with the crew and their work."

"The tech that came out was able to repair our unit and let us know a few things that the previous owner had not done."

"Repaired my ac and is working fine"

"Freddie did an amazing job on the repairs! Definitely plan to use him in the future"

"Our thermostat went out, tried replacing it ourselves and then our heating wasnâ t coming on anymore. Gave NexGen a call and they got someone out the next day before the cold front came through. John came and took a look and found and fixed the problem quickly. He checked to make sure everything was wired correctly on our thermostat, and that everything was running smoothly. He also informed us of some cleaning that needed to be done to our system to help it run more efficiently, and offered the service to get it all cleaned up while he was there. All in all, NexGen was quick, informative, friendly and affordable. Highly recommend!"

"They were very efficient and got the job done in a timely matter and customer service was a great and all over great experience."

I'm Dameon Johnson into by DJ. I'm an HVAC technician and installer from dallas TX. Been in been the business over the course of 20 years. Started as an installer at 14. I'm a family man and an artist.

Hi, my name is Isair Guerrero, and I’m the owner of a dedicated HVAC company proudly serving our community with honest, reliable heating and air conditioning services.\n\nWith hands-on experience in residential HVAC systems, I specialize in installations, repairs, maintenance, and system upgrades. My goal is simple — deliver quality workmanship, fair pricing, and dependable comfort for every customer.\n\nI built this business on hard work, integrity, and treating every home like it’s my own. Whether it’s a quick repair or a full system replacement, you can count on professionalism, clear communication, and service you can trust.\n\nYour comfort is my priority.