License #TACLB64663E Aire Serv of Flower Mound Change Location

Meet Our Flower Mound Staff

For trusted and reliable service, hire Aire Serv of Flower Mound

  • Gary Photo

    Gary Mertz


    Gary started in the HVAC Industry over 12 years ago, following more than 20 years in construction and the Hospitality Industry. He has been happily married to his wife, Shelley, for almost 27 years and they have lived in the Flower Mound/Double Oak area for 16 of those. Gary is a huge baseball fan – not easy to maintain when you root for the Mets! In his free time, he loves to cook, read, workout at Every Level Fitness Highland Village and hang out with friends and family. He’s also teaching himself to play guitar. He says his favorite thing about owning Aire Serv of Flower Mound is the chance to meet so many home and business owners in the area and improve the enjoyment level of their home and office surroundings!

  • Shelley photo

    Shelley Mertz


    Shelley started her working life in the Hospitality Industry (that’s where she and Gary met almost 32 years ago!). In addition to staying home to raise their kids, Shelley worked as a first-grade teacher and started a baking business called Eat Cake, as well as keeping the books for their other businesses, Harvest Moon Energy and Summer Sun Heat & AC. She started in the HVAC business full time when they purchased the Aire Serv franchise in 2016. In her spare time Shelley likes to read, bake, watch football, travel and enjoy time with friends. Of course, her favorite time is spent hanging out with Gary and their kids, Clay and Zoe.

  • Brandon photo


    Operations Manager

    Brandon, also known as “Juice Box”, has been with Aire Serv of Flower Mound from the beginning. He’s a California native who loves to ride his motorcycle and travel. Brandon enjoys spending his time with his daughter, Leah, and watching her grow. He takes on any challenge given to him and loves to show people a good time. Brandon’s favorite quote is, “I’m the best there is and best there’s ever gonna be.”

  • Mariah


    Director of Marketing

    Mariah has been with Aire Serv for over half a year, serving as Marketing Director. Originally from Austin, she moved to the DFW area to graduate at University of Texas at Arlington with a Bachelor of Business Administration in Marketing and Management. When not in the office, Mariah tries to defy gravity with rock climbing, and wants to become a climbing coach in the coming years. Her other hobbies include writing short stories, drawing, hiking, and Renaissance costume design.

  • Madison


    Customer Service Representative

    Madison is our new Customer Service Representative. Born and raised in Ponder, TX with her brother and 3 half-siblings, she recently moved to Denton to have her own space. Madison was the office manager at another HVAC company, so she is well-versed in customer service and the HVAC industry. In her time away from work, Madison enjoys shopping at Target and Marshalls, and fishing in a friend’s pond. Madison’s favorite quote is “You’ve come a long way. And yes, there’s more to go, but good things take time – just ask the flowers” -Ka’ala

  • Susan


    Customer Service Representative

    Susan, also known as “GeGe” by her grandchildren, is our new Customer Service Representative. Born in west Texas, Susan moved from Odessa to Flower Mound to be closer to her family. With over 46 years in the recreational vehicle business, she is accustomed to repairs, dealing with unforeseen circumstances, and helping customers. Outside of work, Susan supports her Flower Mound community by cheering on her grandson on the Marcus football team with her husband, Butch. Between her family and career, Susan always manages to squeeze in a morning walk and a John Grisham mystery novel on her patio with a good cup of coffee. With 4 grandchildren and helping her neighbors breathe easy, Susan always has a smile on her face.

  • Chris


    Service Professional

    Raised in McKinney and Garland and now settled in Lewisville, Chris has always called DFW home. Chris is the middle of his mom’s three boys. With 4 years experience as a Lead Installer and hard worker for a custom blinds business, installing new AC systems and communicating with customers has easily become second nature. Chris juggles multiple hobbies outside of work and is usually found with his girlfriend rock climbing, hiking, traveling, and binging tv shows. In his own personal time, Chris plays video games in Discord with his friends and gives attention to his 6 year old rescue dog, Tidus. Expressive and cuddly, Tidus proves that a dog is a man's best friend.

  • Derrick


    Service Professional

    Derrick, also known as “DJ”, is excited to be a part of Aire Serv. Coming from a big family - 2 sisters, 3 half-siblings, 4 step-siblings, and his parents - Derrick moved from Houston to Denton to find his own space. Derrick is a proud Air Force Veteran, serving his country for 6 years where he met his lovely wife, Tashina. With 8 years of experience in the HVAC industry, Derrick knows how to handle an AC system and provide quality service. Apart from servicing his community, Derrick spends his time binging the show, Vikings, biking, and exploring the outdoors any way he can with his wife. Derrick’s childhood dream of being a biologist still lingers, driving him to one day explore rainforests and jungles.

  • Clay


    Operations Associate

    A new addition to the Aire Serv of Flower Mound team, Clay is the son of Gary and Shelley. Clay was born in Houston, but has lived in Flower Mound for most of his life, and knows this area well. After high school Clay enrolled in The MediaTech Academy in Dallas where he received a certificate in Digital Film and Video. He’s now putting that art school education to good use here at Aire Serv, acting as our systems manager and general problem solver. Outside of work Clay is a freelance video editor, gamer and dungeon master, currently running two Dungeons and Dragons games with more starting soon. 

    Aire Serv now has a literal family atmosphere!

  • Brandon


    Inside Sales and Marketing Associate

    Originally from The Colony, now living in Oak Point, Brandon is a Native Texan. Previously working as a Trade Activation manager for 3 years, Brandon is excited to serve his Frisco community and keep you cool in the Texas heat. Away from work Brandon manages the heat in his own way, grilling the best steak in the state, traveling to beaches, and expanding his car knowledge. As a new homeowner, Brandon breathes easy with his girlfriend Nastassia and her ten year old daughter Haiden. Together they like to find new places to eat, go on adventures at the lake, and enjoy cheering on the Dallas Cowboys, even without his all time favorite: Dez Bryant.

set of AC units
  • 5 out of 5 Star Rating
    “Gary and his team is reliable, always responsive, gives me peace of mind!”

    - Bonnie B.

  • 5 out of 5 Star Rating
    “Courteous, clean, helpful, unbelievably punctual...a surprisingly great experience!!”

    - Andrew D

  • 5 out of 5 Star Rating
    “Committed to excellence & good customer service!”

    - Ingrid S

  • 5 out of 5 Star Rating
    “Honest, hard working, reliable, responsive, professional etiquette and a pleasure to deal with.”

    - Christina Allen

  • 5 out of 5 Star Rating
    “Very reliable company to work with.”

    - Angie M

  • 5 out of 5 Star Rating
    “"Great company professional owner and technicians."”

    - Great Service B Lewis