W. B. Guimarin & Co.

W.B. Guimarin & Co. operates as a full-service mechanical contractor headquartered in Columbia, South Carolina, delivering HVAC, plumbing, and build new construction services. Established in 1903, the company has maintained continuous operations for over 120 years while expanding from Columbia throughout the Upstate, Midlands, and Lowcountry regions. Their client reviews reflect strong satisfaction with a 5.0-star average across nine documented ratings, with particular emphasis on their commercial expertise and comprehensive service programs.

The contractor differentiates itself through specialized capabilities in sensitive environments including server rooms, data centers, and medical gas installations for healthcare facilities. Their team handles chillers, process cooling systems, humidity control, and custom duct design, demonstrating technical depth beyond standard residential work. The company offers both emergency response and proactive maintenance programs, enabling clients to choose between reactive repairs or scheduled service plans tailored to facility needs. This dual approach positions them as partners beyond initial construction.

Customer feedback specifically highlights their operational reach across the entire state, with Thomas Bozeman noting coverage for preventive maintenance, repairs, replacements, and new installations spanning South Carolina. Ed Boehle's review describes a scenario involving overnight truck parking and trailer unloading, suggesting they accommodate commercial logistics needs with responsiveness. Both reviewers awarded five-star ratings, with Bozeman explicitly recommending them as the best overall value among mechanical contractors.