Founded in 1953 by James N. Letsos, Jr., Letsos Company is one of the largest service companies in the Houston metropolitan area. Letsos Company is a second generation mechanical contractor dedicated to the highest levels of quality and professionalism. At Letsos Company, we have expanded to meet the demands of our customers. Our client list includes almost every conceivable type of business.


One thing that a building owner can count on is that his air conditioning systems will eventually fail. The results can be devastating. That is why choosing the right organization for your service company is vital. Letsos Company can make a marked difference in fast, reliable, 24-hour service. Over 100 service mechanics and backup personnel carry state-of-the-art mobile devices so they can be reached immediately. This means faster service for you. We maintain one of the most advanced computerized dispatch, scheduling, and billing computers on the market today. Timely and accurate billings prevent maintenance delays.

Member of Chiller Systems Group

The Chiller Systems Group is a network of independent contractors throughout the United States dedicated to knowledge sharing and training to provide building owners the highest level of chiller service. The Group works with chiller manufacturers to provide members technical training and information in a timely manner. Meetings are held semi-annually to exchange technical data, best practices, and stay current on manufacturer and supplier capabilities. In addition to the semi-annual meetings and training, members share technical information daily through an e-mail user group.


  • Factory Trained Personnel
  • Asbestos Trained
  • NEBB Certified


  • Preventative Maintenance Contracts
  • Factory Trained and Authorized Service for all Makes and Sizes of Air-Conditioning Equipment
  • Factory Trained and Authorized Service for all Makes of Computer Room Units

If experience counts, we are one of the oldest and if size is a factor, we are one of the largest. Call us today at (713) 783- 3200.

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