Our strength has always been our relationships with clients. We’re highly responsive…if they need something from us, we take care of it. Our people have always made us truly unique.
Where Experience Meets Vision


Milestones
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2021
60th Anniversary
Western Allied turned 60 years old in 2021.
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2019
Strategic Branding Update
Western Allied launches a significant re-branding initiative, with emphasis on invigorated brand positioning, a re-freshed logo and new website.
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2018
New Plumbing Division
Western Allied adds to our service offerings by introducing a plumbing division within the construction department.
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2016
WAM Joins Synergy Solution Group
The company joins an esteemed nationwide peer group of over 40 leading mechanical service contractors, expanding our reach within the industry.
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2015
KoolDuct and ThermaDuct Certifications
WAM is the first mechanical contractor in the Bay Area to be trained in the manufacturing and installation of KoolDuct and ThermaDuct systems.
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2013
Sheet Metal and Pipe Shop Expansion
Western Allied acquires an additional facility for sheet metal and pipe shops, providing necessary space for continued growth.
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2010
50 Year Anniversary
Western Allied celebrates 50 years in the industry.
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2009
WAM Joins National Peer Group
Western Allied becomes a member of one of the oldest and finest peer groups in the SMACNA organization. SMACNA is one of our industry’s premier trade associations.
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2009
WAM Expansion
WAM expands its Menlo Park campus to meet business demand in Northern California.
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2003
Western Allied Mechanical, Inc. is Born
Company owners decide to reorganize the business into northern and southern divisions. A new company, Western Allied Mechanical, is formed to operate in Northern California.
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1977
Business Moves to New Location
Western Allied moves to current location in Menlo Park, California.
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1972
Northern California Expansion
Western Allied opens an office in Belmont, California.
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1961
Western Allied Corporation is Founded
Western Allied is founded as an HVAC contractor by Pat Mattson, Hans Sommer and Harold Waterman in Santa Fe Springs, California.