HOME ABOUT CONSTRUCTION SERVICE / MAINTENANCE PROJECTS CONTACT James N Letsos III President & CEO J. Greg Letsos Executive VP Mark Letsos CFO, Treasurer James N Letsos III President, Chief Executive Officer (HVAC LICENSE: TACLA273C) J. Greg Letsos Executive Vice President Mark Letsos Chief Financial Officer, Treasurer Date of Organization 1953 - Houston, Texas Geographic Work Areas Texas, Louisiana Number of Employees 400 - 450 Annual Volume $110,000,000 - $120,000,000 Bonding $200,000,000 (Single Project: $75,000,000) ABOUT Awards Corporate Profile History Customers Buying Programs Disaster Assistance Safety CONSTRUCTION HVAC Plumbing Sheetmetal Piping BIM Special Projects SERVICE HVAC Infographic Plumbing Infographic HVAC Services Plumbing Services Industrial Refrigeration Warehouse Refrigeration Controls Special Projects PROJECTS CONTACT Contact us Careers PHYSICAL ADDRESS 8435 Westglen Drive Houston, TX 77063-6311 Tel: (713) 783-3200 Fax: (713) 972-7880 E-mail: letsosco@letsos.com MAILING ADDRESS P.O. Box 36927 Houston, TX 77236-6927

HOME ABOUT CONSTRUCTION SERVICE / MAINTENANCE PROJECTS CONTACT ABOUT Awards Corporate Profile History Customers Buying Programs Disaster Assistance Safety CONSTRUCTION HVAC Plumbing Sheetmetal Piping BIM Special Projects SERVICE HVAC Infographic Plumbing Infographic HVAC Services Plumbing Services Industrial Refrigeration Warehouse Refrigeration Controls Special Projects PROJECTS CONTACT Contact us Careers PHYSICAL ADDRESS 8435 Westglen Drive Houston, TX 77063-6311 Tel: (713) 783-3200 Fax: (713) 972-7880 E-mail: letsosco@letsos.com MAILING ADDRESS P.O. Box 36927 Houston, TX 77236-6927