Business Details
50+ Years
experience
Emergency
services
Trusted HVAC Contractors in Columbia, SC
W.O. Blackstone & Co. has been a trusted leader in commercial HVAC mechanical contracting since 1937, serving clients across South Carolina with unwavering commitment to Quality, Integrity, and Efficiency. Our full-service capabilities span HVAC construction, maintenance, and 24/7 emergency repair services for diverse facilities including hospitals, industrial plants, and commercial buildings. With a team of skilled craftsmen, mechanical engineers, and EPA-certified technicians, we deliver tailored solutions for new installations, system retrofits, and preventive maintenance programs. Our legacy of excellence is built on 80+ years of experience, a deep understanding of evolving HVAC technologies, and a customer-centric approach that prioritizes long-term partnerships. We maintain industry-leading safety standards while providing turn-key design-build projects, chiller services, and data center HVAC solutions.Our preventive maintenance program reduces unexpected outages by 40% through customized service plans that extend equipment lifespan and optimize energy efficiency. From project management to sheet metal fabrication, our vertically integrated team ensures precision execution on every project. As a South Carolina-based company, we combine local market expertise with state-of-the-art technical capabilities to serve Aiken, Charleston, Columbia, and all major regions of the state. Our leadership in HVAC contracting is evidenced by our involvement in landmark projects like the Seibels Group headquarters retrofit and South Carolina State Credit Union expansion. We continue to innovate while upholding the core values established by founder William Oscar Blackstone in 1937.
Services
HVAC Construction
Emergency Repairs
Planned Maintenance
Chiller Services
System Replacement
Details
- Year established: 1937
Highlights and features
- 80+ years of HVAC contracting experience in South Carolina
- Mechanical engineers lead every project from start to finish
- 24/7 emergency service with rapid response technicians
- Preventive maintenance program reduces equipment downtime by 40%
- Vertically integrated team handles all aspects of HVAC projects
What people say
24/7 emergency service
Skilled technicians
Preventive maintenance program
Energy efficiency improvements
Long-term reliability
Services
HVAC Construction
Our full-service HVAC construction division handles ground-up installations, system retrofits, and specialized HVAC solutions for commercial and industrial facilities. With in-house project managers and mechanical engineers, we deliver design-build projects that meet exact specifications while maintaining strict safety and quality standards. Our team's expertise spans chiller installations, data center HVAC systems, and complex ductwork fabrication to SMACNA standards.
Emergency Repairs
Critical HVAC failures demand immediate attention. Our 24/7 emergency service provides rapid response technicians trained to assess and repair all system types including chillers, VRF systems, and cooling towers. With same-day service available across South Carolina, we minimize downtime through quick diagnostics and efficient repairs using factory-certified parts and procedures.
Planned Maintenance
Our customized preventive maintenance programs extend equipment lifespan while improving system efficiency by up to 30%. Services include coil cleaning, filter replacement, motor inspections, and comprehensive system evaluations. With flexible service tiers and detailed reporting, we help facility managers reduce unexpected outages and optimize operating costs through proactive care.
Chiller Services
Specialized chiller maintenance and repair services for commercial and industrial applications. Our certified technicians handle both air-cooled and water-cooled systems, performing precision diagnostics, refrigerant management, and component replacements. We offer preventive maintenance contracts and emergency service for critical cooling systems in data centers, hospitals, and manufacturing facilities.
System Replacement
Modernize aging HVAC systems with energy-efficient replacements that reduce operating costs and improve comfort. Our team manages complete system replacements from initial assessment through installation, including ductwork modifications and building automation integration. We specialize in upgrading legacy systems while minimizing disruption to facility operations.
People
Jeffrey E. Griffin
Owner and President
Jeffrey E. Griffin leads W.O. Blackstone & Co. with 20+ years of HVAC industry experience, focusing on state-of-the-art system design and customer-centric service delivery. He acquired full ownership in 2020, continuing the company's legacy of Quality, Integrity, and Efficiency.
Lewis Caswell
Former Owner
Lewis Caswell served as president and majority owner from 1982-2006, expanding the company's service capabilities and maintaining its reputation for excellence. His 56-year association with the Mechanical Contractors Association of SC cemented the company's industry leadership.
Questions
What HVAC services do you offer?
We provide full-service HVAC solutions including construction, preventive maintenance, emergency repairs, chiller services, and system replacements for commercial and industrial facilities.
Do you offer 24/7 emergency service?
Yes, our emergency service team responds 24 hours a day, 7 days a week for urgent HVAC repairs across South Carolina.
What areas do you serve?
We serve all of South Carolina including Columbia, Charleston, Greenville, Spartanburg, Florence, and surrounding regions.
How can preventive maintenance help my business?
Our planned maintenance program reduces unexpected outages by 40%, extends equipment lifespan, and improves energy efficiency by up to 30% through regular system optimization.
What makes your company different?
With 80+ years of experience and a team of mechanical engineers leading every project, we combine technical expertise with personalized service and a commitment to Quality, Integrity, and Efficiency.
Can you handle large commercial projects?
Yes, we specialize in complex commercial HVAC projects including design-build installations, system retrofits, and data center cooling solutions for facilities of all sizes.
