Do you need an Air Conditioning and Heating Professional for your home?

We are a local company serving Fort Bend County and surrounding areas.

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We are PASSIONATE about our work

South Texas homeowners understand the importance of having a dependable heating and cooling system to keep their homes' indoor environments healthy and comfortable.

Third Coast Air & Heat has been serving the Texas Gulfcoast areas since 2012. We offer outstanding service by following our core values of trust, quality and timeliness, along with the passion we carry for our job.

Third Coast Air & Heat is a family operated business in Guy, Texas serving Fort Bend and surrounding counties.

When your AC or Heating System needs repaired, you can trust Third Coast Air for a quick estimate and quality repairs.

Our ServicesContact Us

20 Years of Experience

With over 20 years of experience, Third Coast Air & Heat has the expertise to take care of your residential and commercial needs.


All technicians at Third Coast Air & Heat are licensed professionals and specialists. We have the knowledge, experience and tools to repair and keep your A/C and Heating systems running.

24/7 Support

We are on call to take your emergency HVAC needs.

What We Offer

Residential A/C & Heat

We offer maintenance and repair to our customers in Fort Bend and surrounding areas.

Commercial A/C Heat

Our technicians are certified to repair, maintain and install large HVAC systems for commercial buildings, schools and churches.

Indoor Air Quality

We have specialists to help keep the air inside your home free of pollens and pollutions.

What They Say

  • Ray with Third Coast Air & Heat goes above and beyond to do the work timely & complete. He makes suggestions to improve the air system quality and efficiency. We were totally impressed with his workmanship and communication, and the job costs are very reasonable. Will 100% recommend his service to others! Thank you Ray!

    Tommy & Peggy N.
    Rosenberg, Texas

  • We have found the owner, Ray Mehrens, to be of the highest moral integrity. In addition he is very dependable and trustworthy. We have recommended this company to our family and friends.

    Ron H.

  • Thank you for being honest and hardworking. We had received a quote from a competitor - they recommended a full unit replacement at $15,000. Not only did Ray tell us we didn’t need a new unit, he said ours was still under warranty (something the other company failed to tell us). Ray recommended that we insulate the house better. Ray put insulation into our attic and did some outside ventilation work. Now that we are in the heat of summer, not only is our house cooler than it was in the past, but our electric bills are lower! We have told all our friends about Third Coast Air! They are now our go-to company. We appreciate you and the work you did. It used to take out house until well after 10 pm for the ac to stop running. Not the case any longer!

    Stephanie & Michael Matlock

    Houston, Texas

  • Absolute best around! Will never use anyone else! Very reliable!

    Jessica Durbin

    Alvin, Texas

  • Integrity, fair pricing, friendly. Enough said!

    Lynda Hood

  • Thank you so much for working on my a/c. It was like you weren’t ever there! Which is a good thing. You didn't leave ANY lights on, no insulation all over the bathroom floor, a/c wasn't cranked down to 60– nothing! I am not used to someone being so conscientious about their work. Thank you Thank you Thank you!!

    Catherine Baker

    Richmond, Texas

  • Ray has worked on three different AC systems for me. He does a great job for a fair price. He is honest and conscientious in his work and life. Ray treats every customer like he would want to be treated as a customer. You will not be disappointed. He is committed to customer satisfaction.

    Walter Urbish

    Rosenberg, Texas

  • Super friendly service and will work until job is done. Very reasonable prices.

    Ray Henzelka

    Wallis, Texas

  • Excellent and very reliable ! Wouldn't use anyone else!!!

    Carole Valusek