S3H is a national firm providing engineering, plumbing, installation, and design services in Nevada, Southern California, Northern California, Arizona, Oregon, Washington D.C, Maryland, New York, and Hawaii. Our company specializes in new construction and renovations, utilizing the design build concept to minimize costly delays, shorten a project’s timeline and maximize a client’s budget.

The S3H management team has over 60 years of experience, quickly becoming the leading HVAC mechanical subcontractor on the West Coast. Throughout our history, we have been known as the most innovative, forward thinking, and experience driven mechanical engineering firm in the United States, with awards to show for it. 



Founded by Vatche and Arlene Sarkoyan in 2005, their combination of education and industry experience has created a unique approach to mechanical construction; a practice founded upon experience, quality, performance and value. The S3H portfolio of successful projects demonstrates the company’s level of experience in both the commercial and industrial sectors. S3H provides an inventive plan for mechanical systems that assist clients in moving towards fully sustainable buildings. At project conception, S3H provides clients with a strategy for design to gain the highest accreditations for LEED®, and GREEN rated buildings. This approach then forms the basis for the project team. The result is more sustainable results, often at little extra cost.



The Sarkoyan’s combination of education and industry experience has created a unique approach to mechanical construction; a practice founded upon experience, performance and value. The company’s vision is relationship based; provide owners and general contractor with exceptional quality at competitive prices. Exceptional quality is delivered by exceptional people who continue to earn the trust and commitment that contributes to our success. 

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S3H, Inc.

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