Custom Design Build

Our experience makes the difference.

Meet Your Air Conditioning Needs with a Custom Design Build


Experts in Professional HVAC Design-Build

As a leading HVAC company in South Texas, Barrett serves the surrounding areas of San Antonio as the dependable choice for professional design-builds. Our team of experienced professionals coordinate with top-tier engineers and contractors to deliver nothing less than spectacular results for your design-build needs. For any sized project or type of air conditioning and heating equipment, Barrett’s fluid and on-point communication ensures excellence throughout every detail of your project.


Commercial HVAC Expertise

  • Maintenance Contracts
  • System Inspections
  • 24-Hour Service & Repair
  • System Design & Installation
  • Reciprocating, Scroll & Screw Compressors
  • Liquid Chillers
  • Direct Expansion Systems
  • Cooling Towers
  • Low Pressure Boilers
  • Recirculation Pumps
  • Conventional, Solid State, & Pneumatic Controls
  • Computer Room MaintenanceTemperature Controls
  • Certified Air & Hydronic Balancing
  • Energy Management
  • Air Filter Service
  • Pipefitting & Welding
  • Mechanical System Sales & Installation
  • New Construction
  • Chiller Tube Analysis
  • Tenant Finish Out
  • Refrigeration
  • Process Piping

Primary Focus Climate-Controlled Solutions

With a primary focus in commercial HVAC climate-controlled solutions, we have developed streamlined processes that reduce customer risk and allows for ultimate customization. Regardless of how big or complex your project is, our team is more than capable and qualified to handle it! We take the entire process of designing a brand-new HVAC system seriously and factor in everything from budget, deadlines and required materials to efficiently complete a reliable product.

Tackling Intimidating Tasks For Our Clients

For years, we have worked diligently to accommodate real people needing real solutions. Sometimes that means tackling intimidating tasks for our clients, and if that’s the case, then bring it on. We are trusted by San Antonio, Schertz, New Braunfels and the surrounding areas, and will continue to bring peace of mind to diverse companies in South Texas with our reputable skillsets. Our decades of experience have propelled us forward in the air conditioning and heating industry, making our team of experts the preferred option when it comes to new construction projects or replacing old and outdated equipment with a long-lasting, quality investment.


Wide Range Of Specialty Areas

We pride ourselves in offering a wide range of specialty areas including, HVAC installation, electrical work, ductwork, replacements, new construction, along with many more so that businesses feel helped in more ways than one. Here at Barrett, our responsibilities fall onto coordinating and managing projects of various rigors, however, our priority will always remain our clients’ safety and wellbeing. For questions regarding our design-build services, please contact a Barrett representative today!


Market Segments Who We Serve

  • Commercial
  • Government
  • Food & Beverage
  • Institutional & Education
  • Hospitality
  • Residential

Specialty Services

• Tenant Finish-outs
• Piping Replacements
• Cooling Tower Replacements
• Chiller Replacements
• Control Upgrades
• IT/SWITCH Installations
• High-efficiency Systems
• Sustainable Systems


I just wanted to take the time to compliment Michael, too many times we hear a lot of complaints and not enough compliments. Michael is a very kind person who obviously cares about his job his attitude proves it. He had to walk back and forth through the office to get to thermostats and check the temperatures several times and everyone who interacted with him just had nothing but positive things to say about him. We enjoyed having him!

- Genevieve H.

I really appreciate all your help in getting the repairs completed on both our Liebert and chiller units. It is an understatement to say that we are impressed by the professionalism, knowledge and ability of Stephen T. You mentioned that he is new to your organization, and he is a true blessing to our company. He has been right there, helping out wherever and whenever this past week. From providing immediate repair, to primary research into the problem, to clear communication and follow-through, we could not have done it without his expertise, thoroughness, and patience.

- Fran Villarreal, M&S Imaging, NEIC Associate Director

I am writing to compliment Greg on his tenacity and commitment to fixing the boiler. Our house is warm and comfortable. I have monitored the boiler and it is striking first time each time I check it out. Please give Greg my thanks. He promised he would get it done and he did.

- Killis A., FAIA

I just wanted to say thank you for the quick service response we received today. I am a very happy customer (much cooler too)!

- Maryann Acola, Executive Director, San Antonio Youth Literacy

Barrett & Sons has continually offered excellent service and customer service to our District. They handle any issues we have with our HVAC systems with outstanding product knowledge, care and confidence. Barrett & Sons has been a tremendous asset to our District.

- Nancy York, Purchasing, Navarro ISD

I didn't get the typical you need x, y and z other items. It was just fixed. The price was more than fair and the attention to detail (and service) was off the charts. There is something to be said for making the customer the first priority and backing it up. I would recommend Barrett & Sons to anyone.

- Mike K., S.A.

Thank you, Todd, for all your assistance. Wonderful to have someone to trust and count on from so far away!

- Ida C., N.C.

I don't write reviews as a general rule of thumb for anyone, but this company went above and beyond my expectations, not once but twice now. If you have any type of issues with your heating or AC, call this company. You won't regret it.

- Tony M.

Quality Service


Super Support

Award Winning

Want to know more about our residential services?


Office Hours

8AM-5PM Monday to Friday
24-hour emergency service available


128 Commercial Place
Schertz, TX 78154

(210) 659-5801

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