A Certified Small Business (760) 560-0100

We're Growing!

T-Squared has joined with Salas O'Brien to create a national firm of 17 offices and nearly 500 employee-owners.

Read More

T-Squared Professional Engineers, Inc.

T-Squared Professional Engineers, Inc. provides high quality consulting services for HVAC (heating, ventilation and air conditioning), electrical and plumbing engineering and design. Our solid commitment to client satisfaction is achieved by providing synchronized engineering solutions focused on sustainability while remaining environmentally conscious.

Leadership in Energy and Environmental Design

With LEED® (Leadership in Energy and Environmental Design) accredited services and multidisciplinary capabilities we are uniquely qualified to design energy saving buildings for all facets of the construction industry.

Our experience encompasses projects in both the private and public sector including the following facilities:







T Squared Professional Engineers understand the importance of Engineering Intelligence and proper implementation within design solutions. 

DID YOU KNOW…..Standards pursuant to the following organizations’ codes and regulations must be met before occupancy permits can be granted:

  • Occupational Safety and Health Administration
  • National Fire Protection Agency (NFPA)
  • 2013 Building Energy Efficiency Standards
  • California's Code of Regulations Title 24

Our dedicated Compliance Professionals provide regulatory compliance assurance and early-on design reviews to prevent project delays and unnecessary construction costs. With 25 years of experience, T Squared Compliance Professionals have a full understanding of how to create and review designs that meet Third Party Specification Codes to ensure your facility and equipment are compliant with Occupational Safety and Health Administration (OSHA) regulations and California Code of Regulations (CCR). We implement certifiable electric systems through Arc Flash Analysis and Acceptance Testing in order to:

  • Safeguard your business, facility, and employees
  • Increase Return on Investment
  • Guarantee optimal system performance
  • Reduce risk of regulatory non-compliance

Click Here to Learn More About These Services

4th Annual San Diego County AEC Food Drive!

SD-Food-Bank-Logo.jpgThe results are in and they are incredible...we provided over 40,000 meals this yearOur goal this year was to band together as an industry and provide 15,000 meals to the San Diego Food Bank through food collections and online donations and we blew way past that number! Thank you to all the participating teams who contributed to this amazing result. 


Revit Design


T-Squared Professional Engineers, Inc
1340 Specialty Drive, Suite E
Vista, CA 92081

Tel: (760) 560-0100
Fax: (760) 560-0101

Comments     |     Copyright © 2018 T-Squared Professional Engineers, Inc..    All rights reserved.     |     Website designed by S Rosario Design. v0514