Business Details
50+ Years
experience
High-Temperature Furnaces Engineered for Precision
Since 1966, The Mellen Company has been designing and assembling high-temperature furnaces in the United States. Our family-run business spans three generations, combining deep industry expertise with a commitment to American craftsmanship. We specialize in creating precise, durable heating solutions for research and manufacturing applications, from standard processes to specialized crystal growth systems.With every furnace engineered for reliability and performance, we prioritize quality materials and hand-assembly to meet rigorous standards. Our team collaborates directly with clients to tailor systems to their unique requirements, ensuring optimal functionality and long-term dependability for demanding industrial environments.
Services
Box Furnaces
Tube Furnaces
Split Furnaces
Graphite Furnaces
Elevator Furnaces
Custom Furnace Design
Thermocouple Calibration
Furnace Rebuilds
Waterjet Cutting
Sheetmetal Fabrication
Details
- Year established: 1966
Highlights and features
- We design furnaces proven to endure 50+ years of industrial use
- Family-owned manufacturing since 1966 with generational expertise
- Custom-engineered solutions for specialized crystal growth applications
- 100% USA-based design and assembly process
- Temperature-controlled systems tested to strict quality standards
Services
Box Furnaces
Precision box furnaces for laboratory and production environments. Engineered for temperatures up to 1800C with consistent heat distribution. Ideal for material testing, ceramic processing, and heat treatment applications in research and industrial settings.
Tube Furnaces
High-temperature tube furnaces designed for sample processing in controlled atmospheres. Available in multiple configurations with temperature capabilities up to 1800C. Used for crystal growth, semiconductor processing, and chemical synthesis applications requiring precise thermal control.
Custom Furnace Design
Tailored furnace solutions for unique research and production requirements. Collaborative engineering process ensures optimal configuration for specialized applications. Includes temperature profile modeling, material selection, and integration with existing laboratory or manufacturing equipment.
Graphite Furnaces
High-purity graphite heating systems for extreme temperature environments. Capable of reaching 2800C for advanced materials processing. Used in semiconductor manufacturing, carbon composite production, and scientific research requiring contamination-free heating solutions.
Furnace Rebuilds
Comprehensive furnace restoration services extending equipment lifespan. Includes component replacement, insulation upgrades, and control system modernization. Maintains original specifications while incorporating performance improvements through decades of accumulated industry expertise.
People
John Mellen
President
Third-generation leader with 30+ years in industrial furnace engineering. Oversees all design and manufacturing operations at The Mellen Company Company. Holds multiple patents for high-temperature processing systems. Active member of American Ceramic Society and IEEE.
Sarah Chen
Chief Engineer
Lead thermal systems engineer specializing in precision temperature control solutions. Developed proprietary furnace designs for crystal growth applications. 25 years of experience in materials science and industrial heating equipment design. Holds MS in Mechanical Engineering from MIT.
Questions
What furnace temperature ranges do you offer?
We provide systems from standard 1250°C lab furnaces up to 2800°C graphite units for advanced materials processing, covering over 15 temperature specifications.
Can you help with custom furnace designs?
Yes, our engineering team specializes in custom solutions. We work through design reviews to create systems that meet your specific process requirements, including unique temperature profiles and integration needs.
Are furnaces truly made in the USA?
Every The Mellen Company furnace is designed and hand-assembled at our Concord, New Hampshire facility since 1966, using domestic materials whenever possible.
What support comes with equipment purchases?
All systems include technical documentation, programming assistance, and our engineers provide support within 24-48 hours for troubleshooting or operational questions.
How do your furnaces ensure temperature accuracy?
Each unit undergoes extensive thermal testing to ensure precise control within ±1°C. We employ advanced insulation techniques and high-quality thermocouple systems for repeatable results.
What industries use The Mellen Company furnaces?
Our equipment serves semiconductor manufacturing, aerospace materials testing, pharmaceutical research, university labs, and specialized metalworking operations requiring precise high-temperature control.
Reviews (1)
Tim P.
Nov 12, 2019
Report
Decent place to work but not great.
-The Bad
People in the front offices have a strange attitude towards the shop workers
People in the shop are pretty grouchy and will smile to your face but talk behind your back. If you do work through temping you have to work an absurd 640 hours then have to work an additional 90 days before benefits kick in. The standard level of quality is pretty low and "good enough" most of the time. The Equipment in the shop is pretty dated and poorly maintained.
Parts are scattered throughout the shop and "pn-hand" materials like bolts and nuts are constantly out
-The Bad
People in the front offices have a strange attitude towards the shop workers
People in the shop are pretty grouchy and will smile to your face but talk behind your back. If you do work through temping you have to work an absurd 640 hours then have to work an additional 90 days before benefits kick in. The standard level of quality is pretty low and "good enough" most of the time. The Equipment in the shop is pretty dated and poorly maintained.
Parts are scattered throughout the shop and "pn-hand" materials like bolts and nuts are constantly out
