Our History
Delta-Therm was started in 1968 by two electrical engineers, Jim VanEffen and Terry Terhune. In 1969, Jim and Terry patented their mineral insulated cable assembly termination and manufactured their own snow melting system control. In 1970 these were the first snow melting products ever to become UL Listed.
By 1988, Terry had retired and Jim was ready to retire when he met Ed and Eileen Slagis. Ed had been a mechanical engineer for Corning Glass and Ritter Midwest, and Eileen was a religious education director for the Chicago archdioceses.
Ed worked with Jim for several years to learn everything about the heat tracing business, while Eileen managed the accounting functions. Jim remained a part-time fixture at Delta-Therm for many years, lending his expertise to our employees and customers. His valuable assistance helped us grow the company significantly and we credit him for much of our early success.
By 2003, Jim, Ed and Eileen retired. Tom Slagis and Ada Cryer, two of Ed and Eileen's children manage the business. Like Jim before them, Ed and Eileen come in to lend their expertise and help train new employees on a regular basis.
Our Philosophy
Our philosophy is to simple, we are here to help you solve a problem or meet a goal that requires heat tracing components. You can select from our large inventory products and call us with any questions that you have. We will help you with a site specific estimate, written specification, and engineered drawing. We will also provide you with engineered drawings and site specific technical details (upon request) with your order. You take advantage of our toll free technical and sales support # 800-526-7887 between the hours of 7:00 a.m. - 5:30 p.m. CST.
Our Mission
To provide value through inventive design, quality products, and responsive service.
Our Products
- HEAT TRACE CABLES
- Constant Wattage Cables
- Self-Regulating Cables
- M.I. Heat Trace Cable Assemblies
- Floor Warming Cables
- Snow Melting Mats
- HEAT TRACE CONTROLS
- Electronic and Mechanical Thermostats
- Programmable Load Switching Thermostats
- Roof De-icing and Snow Melting Controls
- LOAD SWITCHING PANELS
- Enclosed Contactor Panels
- Power Control Panel with 30mA G.F.P.E.
- Low Noise Relay Panels
- Custom Control Panels
- HEAT TRACE ACCESSORIES
- Monitor Lights
- Caution Labels and I.D. Markers
- Tapes and Strapping
- Roof De-icing Clips and Adhesives
Our Services
- FIELD SERVICES
- Pre-installation On-site Planning
- On-site Installation Training
- Cable Testing and System Inspections
- Service Calls
- ENGINEERING SERVICES
- D-size Engineered Drawings
- Bill of Materials
- Site Specific Typical Details
- Written Specifications
- TECHNICAL SUPPORT
- (800) 526-7887
- info@delta-therm.com
- TRAINING
- Engineering Lunch 'n Learns
- Authorized Installer
In 1970 we patented our M.I. heating cable assembly and had it UL Listed for snow melting and pipe tracing applications. We have continued to improve our products and services. Below are major historical milestones.
