LSW Engineers is a Phoenix-based consulting engineering firm specializing in mechanical, electrical, plumbing (MEP), and technology systems design. Since 1947, we’ve partnered with architects, contractors, and clients to deliver smart, efficient solutions that stand the test of time. From airports to schools, data centers to city halls, our work supports the systems that keep communities running.

With expertise spanning HVAC, lighting, fire alarm, low voltage systems, commissioning, and BIM modeling, we take pride in turning complex challenges into clear, coordinated designs. Our team is driven by collaboration, curiosity, and a commitment to doing things right—on paper and in the field.

We believe great engineering should make your job easier, your spaces perform better, and your projects move forward smoothly. Whether you’re solving today’s problems or planning for tomorrow’s growth, LSW Engineers is ready to help you make it happen.