BUILT BEYOND EXPECTATIONS
UL Control Panel Manufacturing
GTH designs and builds UL control panels that support reliable automation, safer operations, and long-term system performance across industrial environments.
Quality UL Control Panels for any Application
We are a full-service control panel provider. Our engineers will design, engineer, assemble, wire, quality test, and start-up your panel to meet your exact specifications.

In House Design Engineers
GTH’s in-house design engineers bring deep control expertise and a collaborative mindset to every project, delivering accurate, ISO 9001:2015 compliant UL panel designs that assist in streamlining manufacturing.

Quality Built In House
GTH operates a UL 508A panel shop where technicians work hand-in-hand with engineers to fabricate, assemble, and wire custom control panels with precision, consistency, and compliance at every stage.

Inspected & Tested for Quality & Performance
Every panel is inspected through a 52-point ISO 9001:2015 quality process and on-site FAT test is performed so every panel is verified for quality, safety, and performance.

On-Site Start-Up Support
Our field technicians support panel installation with on-site I/O checks, loop testing, and final startup verification to ensure systems perform as intended from day one.
WHY GTH
GTH provides UL-certified control panel manufacturing backed by engineered design and a rigorous quality management system, delivering reliable, compliant panels built for seamless integration and long-term performance.
UL-Certified Manufacturing
GTH operates as a fulls-scope UL certified panel manufacturer, holding UL 508A, UL 698A, and UL NNNY certifications to support standard, hazardous, and specialized industrial environments.
Quality Management System
Our ISO 9001:2015 aligned quality management system ensures repeatable processes, thorough documentation, and consistent inspection from design to delivery for every control panel manufactured by GTH.
Engineered to Specification
Each control panel is purpose-built to align with system design, operational needs, and future expansion, supporting seamless integration and long term performance.
Where Expertise Meets Execution
With deep roots in the Western United States, we understand regional codes and compliance requirements, applying disciplined engineering and quality processes to deliver reliable, UL-certified control panels.
Our Process
Future success starts with today’s specifications
Whether building a new control panel or replacing aging equipment, we start by understanding your system requirements, standards, and operating environment. A structured design and build process with clear communication ensures quality, compliance, and panels that integrate seamlessly into your operation.
Regional Knowledge, Real Support
System design and support shaped by regional operating and regulatory realities.
Western U.S. industrial facilities operate under some of the nation’s most stringent environmental and air-quality regulations, requiring careful attention to monitoring, reporting, and emissions control. Industries like mining, energy, and manufacturing must navigate complex permitting, dust management, and state oversight that directly impact system design and operation. With deep regional experience, GTH designs and supports automation systems that align with these regulatory realities while delivering reliable, safe, and long-term performance.
A Legacy Built on Service
For nearly a century, GTH has lived the legacy of "The House that Service Built"
We foster a culture of continuous improvement, technical excellence, and customer-focused support that earns trust long after a project is complete. That commitment to service continues to guide how we approach every project—combining deep technical expertise with a focus on long-term customer success. From initial design through ongoing support, we build solutions that perform reliably and evolve with our customers’ needs.
Project Portfolio
-
±3°FGTH partnered with Ace Coolers to develop scalable, high-reliability control panels for pharmaceutical cooling systems—delivering ±3°F precision, real-time visibility, and flexible design. Read more to see how the system evolved.Protect High-Value ProductsCase Study±3°F Protect High-Value ProductsGTH partnered with Ace Coolers to develop scalable, high-reliability control panels for pharmaceutical cooling systems—delivering ±3°F precision, real-time visibility, and flexible design. Read more to see how the system evolved.Case Study -
GTH designed and delivered a turnkey PLC control panel for a global mining operation, enabling reliable control and high-speed fiber communication in a harsh environment. Read more to see how the system was built for seamless integration and performance.Custom PLC PanelCase StudyCustom PLC PanelGTH designed and delivered a turnkey PLC control panel for a global mining operation, enabling reliable control and high-speed fiber communication in a harsh environment. Read more to see how the system was built for seamless integration and performance.Case Study
UL Control Panels FAQs
Find answers to common questions about our services, processes, and expertise to help you better understand how GTH supports your operation.
-
Why is UL 508A certification important for industrial control panels?
UL 508A certification is important because it helps verify that a control panel is built to recognized safety and construction standards. This can support code compliance, simplify inspection processes, reduce risk, and provide greater confidence in panel quality and performance. For industrial facilities, working with a qualified UL 508A panel shop helps ensure the finished panel is properly designed and manufactured for its application.
-
What types of UL panel certifications does GTH support?
GTH supports UL 508A, UL 698A, and UL NNNY certifications to serve a range of standard, hazardous, and specialized industrial applications. This allows our team to manufacture panels for environments with varying compliance, safety, and operational requirements while maintaining consistent quality throughout the build process.
-
How does ISO 9001:2015 benefit customers?
ISO 9001:2015 benefits customers by supporting consistency, accountability, and quality throughout the manufacturing process. At GTH, it helps ensure every control panel moves through documented design, assembly, inspection, and testing procedures, reducing variability and reinforcing confidence in the final product.
-
Why is ISO 9001:2015 important in control panel manufacturing?
ISO 9001:2015 is important because it helps ensure control panels are built through consistent, documented quality processes. At GTH, our quality management system supports repeatable manufacturing, detailed inspection, and clear documentation to help deliver reliable panels for demanding industrial applications.
-
What experience should a control panel manufacturer have?
An experienced control panel manufacturer should combine engineering expertise, certified fabrication practices, and a structured quality process. At GTH, our in-house engineers and panel shop technicians work together from design through fabrication and testing, ensuring each panel is built accurately and integrates smoothly into the larger automation system.
INDUSTRIAL EXPERTISE, DIVERSIFIED
Industries We Serve
Automating across diverse industries, we deliver seamless control and automation solutions that modernize operations for public and private industrial organizations throughout the western region.
Water & Wastewater
Measure, monitor, and collect data from water and wastewater systems.
Water and wastewater systems require reliable operation, data visibility, remote monitoring, and redundancy. For decades, GTH has modernized these systems with expert integration, product selection, UL508A/UL698A panels, programming, startup, and cybersecurity-focused upgrades.
Mining, Minerals, & Metals
Engineering and field expertise for robust control systems.
Mining, minerals, and metals applications demand rugged controls and experienced support. GTH’s MSHA- and BROWZ-certified engineers deliver safe, reliable system design, integration, field support, and UL508A/UL698A control panels for complex modernization projects.
Food & Beverage
Ensure quality, consistency, productivity, and compliance
Food and beverage operations rely on automation for process control, data visibility, and regulatory compliance. With decades of experience, GTH delivers automation, on-site programming, instrument calibration, UL panel modernization, and ISA- and FDA-aligned expertise to improve quality and efficiency.
Pharmaceutical & Life Sciences
Integrate instrumentation and software for compliance
Pharmaceutical and medical device manufacturers face strict quality and safety regulations while maintaining efficient operations. GTH delivers control and automation solutions, including PLC and SCADA systems, to support reliable, repeatable, and traceable production without sacrificing speed or compliance.
Manufacturing
Modernize or build scalable, controllable automation systems
Industrial manufacturers require control systems tailored to their unique processes. GTH delivers design/build automation and control panels, field start-up services, and modern instrumentation and software—providing the data visibility needed to meet compliance requirements and improve manufacturing efficiency.
Aerospace
Deliver compliant, high performance control systems
Aerospace manufacturers require modern, reliable control systems while meeting strict regulatory and compliance standards. For decades, GTH has supported aerospace operations with advanced automation, process and thermal solutions that improve safety, performance, and efficiency.
DESIGN-MINDED, SOLUTION-ORIENTED
Our Expertise
With GTH, you get a partner to solve your critical automation challenges, every time. Let us put our experience to work for you.
System Integration
We modernize control systems so our clients can reap the benefits of smart manufacturing
Thermal & Process
Seamlessly upgrade combustion & process systems with automation for better control and environmental efficiency
Control Panel Manufacturing
Custom control panels are manufactured in our two UL panel shops in California and Nevada.
Industrial Services
Our Field Technicians and Engineers provide programming, calibration, repair, and preventative maintenance services.
INDUSTRY INSIGHTS DELIVERED
Keep Up to Date With Us
Stay connected with updates on new blogs & case studies published, along with occasional emails sharing training opportunities and customer-focused company news.
4 min read
Upgrading Legacy Controllers to Modern Solutions
4 min read
Smarter Control Starts Here
DESIGN-MINDED, SOLUTIONS-ORIENTED
Put Our Experience To Work For You
George T. Hall (GTH) is a full-service control solutions provider. With design capabilities, programming expertise, instrumentation services, and control panel manufacturing, we create the control solutions at the core of critical industrial applications.
