Cullum Mechanical

Cullum Mechanical has operated as a principal mechanical construction and HVAC contractor across the Southeast since founder Furman Cullum established the business in Charleston, South Carolina, in 1972. Based in North Charleston, the company holds a 4.2-star rating derived from 51 customer reviews, indicating generally favorable service delivery within the local market. The contractor maintains standard weekday hours from 7:30 AM to 5:30 PM Monday through Thursday, closing at noon on Fridays, with weekend availability currently unavailable. While the business predominantly serves commercial and industrial clients including office complexes, healthcare facilities, data centers, and manufacturing plants, residential customers reporting through reviews suggest the company also handles smaller-scale projects for properties like wedding venues and retail establishments.

The company distinguishes itself through deep expertise in industrial-scale HVAC systems, including specialized knowledge of chillers, cooling towers, boilers, refrigeration systems, and air handler units. Unlike many contractors offering only residential heat pumps, Cullum Mechanical handles process piping for manufacturing environments and maintains in-house capabilities for pre-construction design services, suggesting a vertically integrated operation capable of managing complex mechanical projects from concept through completion. The business also operates under Cullum Mechanical Construction, Inc. and maintains multiple regional service desks covering Charleston, Columbia, and Greenville territories, indicating substantial organizational infrastructure uncommon among small HVAC operators.

Review accounts highlight specific technician interactions worth noting. A wedding venue operator praised the team for arriving quickly during urgent situations and demonstrating creative problem-solving when troubleshooting unusual HVAC challenges, describing the technicians as professionals who knew their stuff. Another reviewer working with someone named Lea reported exceptionally efficient scheduling that got a technician to their business promptly, praising both speed and customer communication. These accounts suggest the company prioritizes responsiveness for time-sensitive commercial situations, though one industrial client noted the company now requires service contracts for multi-facility accounts, a policy shift worth confirming before engaging.