140 years of building what industry needs.
Founded in 1885, Harris Thermal Transfer Products is an ASME-certified industrial fabricator serving clients worldwide — designing, manufacturing, and repairing custom thermal process equipment.
From Harris Ice Machine Works to global fabricator.
For more than 140 years, Harris Thermal has proudly manufactured equipment in the United States. Originally founded as Harris Ice Machine Works, the company built ammonia-refrigeration equipment before transitioning during the world war era into custom thermal process equipment — first supporting the United States' war efforts, then the rapid expansion of American manufacturing.
That spirit of innovation carries forward today. We build large-diameter, heavy-wall custom vessels and ship equipment to clients around the globe. This heritage proves our ability to adapt, endure, and deliver value for generations of customers.
Specialists in heat transfer and pressure containment.
We specialize in Shell & Tube Heat Exchangers and ASME Code Pressure Vessels — plus custom engineered equipment for unique applications.
Our Product Portfolio
- Shell & tube heat exchangers
- ASME code pressure vessels
- Evaporators
- Ozone contact & destruct vessels
- Fry oil heaters
- Condensers
- Converters
- Separators
- Vapor bodies
- Storage tanks
- Columns & towers
- Custom engineered equipment
Built around complex fabrication.
Our 50,000+ sq ft facility and integrated in-house approach support short lead times, competitive pricing, and consistent quality on projects of all sizes and shapes.
Partnership
We work closely with each client to meet application requirements, specifications, budget, and timeline.
Expertise
Decades of knowledge and advanced practices produce cost-effective equipment that runs for many years in the most difficult conditions.
Reliability
Schedule commitments we plan against, and service our customers return for, project after project.
What guides every decision.
Our vision is to be a fabricator our customers keep coming back to — known not only for technical capability, but for quality, expertise, and the long-term relationships we build.
Family
Every person is integral to our success and we look out for each other.
Integrity
We are honest, transparent, and trustworthy.
Excellence
Good isn't the finish line — we strive to be the best.
Tenacity
When the going gets tough, we get it done, no matter what.
Collaboration
We empower people, value opinions, and win as a team.
Fun
We celebrate wins, keep a sense of humor, and create a workplace people enjoy.
Standards you can trust.
Our ASME “U,” “R,” and “PP” stamps, international certifications, and rigorous in-house testing ensure every product is built for safety, compliance, and long-term reliability. Learn more about our certifications & standards, or visit our FAQ page for detailed insights.
Ready to start your next project?
We'll support your project from concept through completion — reliable, code-compliant solutions built to last.