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A Values-Driven Business

Since 1903, the W. B. Guimarin team has maintained its commitment to being the best mechanical contractor in South Carolina, serving our customers, employees, and the community with integrity and innovation.

We continue to grow and prosper by consistently providing value to all.

A History of Excellence




William B. Guimarin moves to Columbia to work on Columbia’s first skyscraper now known as the Barringer building.


W.B. Guimarin installs the first air conditioning system in Columbia.


Mr. Guimarin retires and sells WBG to Edmund Rhett Heyward, his former banker and bookkeeper.


Mr. E.R. Heyward’s son, Albert R. Heyward takes over WBG.


Mr. A.R. Heyward sells WBG to his son, Carroll, and his nephew, Church Powers.


WBG celebrates its 100th anniversary.


WBG continues to grow its reputation for excellence as the leadership of Carroll Heyward and Church Powers transitions to the 4th generation of Heyward family ownership, Sidney Heyward Rex and C. Carroll Heyward, Junior.

Our Leadership

C. Carroll Heyward, Jr.


Sidney Heyward Rex

Executive Vice President, Chief Financial Officer

Scott Davis

Vice President of Service Operations

Shawn Wood, PE

Vice President, Sales and Engineering

Richard Byrd

Vice President, Construction Operations

Anthony Reddish

Vice President of Preconstruction

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