In 1974, Industrial Heat Enterprises International (IHEI) was established and quickly became a national leader in thermal and cleaning solutions within the Industrial Product Sector. The company focused on delivering advanced systems to industries including heat transfer, converting, aerospace, small engine, and automotive manufacturing. With a strong emphasis on engineering excellence and process efficiency, IHEI built a reputation for providing reliable equipment designed to meet the demanding production and quality standards of its customers.
IHEI’s expertise in thermal processing and industrial cleaning positioned the company as a trusted partner for manufacturers seeking improved performance, durability, and consistency in their operations. By combining innovative system design with deep industry knowledge, IHEI helped customers optimize productivity while maintaining strict compliance with industry requirements.
In 1998, LTG Technologies acquired Industrial Heat Enterprises International, creating new opportunities for expansion into the Industrial Cleaning Solutions Industry. This strategic acquisition strengthened LTG’s portfolio by adding IHEI’s specialized knowledge and proven technologies, broadening its reach across multiple industrial markets and enhancing its overall capabilities.
The growth continued in 2010 when International Thermal Systems (ITS) purchased LTG, IHEI, and OSI, bringing together three respected industry leaders under one organization. Today, ITS continues to support LTG, IHEI, and OSI customers with:
Today, ITS continues to support all IHEI legacy equipment with:
- Spare parts and replacement components
- Service and technical expertise
- System upgrades and retrofits
- Preventative maintenance and performance optimization
If your facility is running IHEI equipment, ITS is your go-to partner for keeping your systems operating safely, efficiently, and reliably.
Contact ITS for IHEI service, parts, or support.

