GTS Energy Aftermarket Services
Sigma Thermal is the official provider of support and maintenance services for all GTS Energy process heating equipment. We offer a wide range of aftermarket support services to help you find solutions for your operation, maintenance, safety, and regulatory requirements.
We value your business and want to help you succeed. Let us help you optimize your process heating equipment or system to ensure efficient performance. Let us assist you with technical support, training, parts, upgrades, or retrofits.

Maximize Uptime with Proactive Maintenance
Annual prescheduled maintenance service plans for your process heating equipment or system are available to guarantee your system’s performance year in and year out. Sigma Thermal trained technicians have experience in all aspects system maintenance and troubleshooting. Our technicians travel globally and have working knowledge and experience with electrical power and control, instrumentation, rotating equipment, steam systems, shaft alignment, valves, dampers, strainers, thermal oil equipment and more. The services available for All GTS Energy branded process heating systems include:
Sigma Thermal and know that you are supported by qualified industry experts in
- Technical Support/Training
- Inspection / Energy Audits
- System Analysis
- Pre-Schedule Maintenance
- Replacement Parts
- Upgrades/Modifications
Support Services
A failed or defective system component can mean costly downtime for your operation. Sigma Thermal is your source for quality replacement parts for your Process Heating Equipment. We respond quickly. For assistance or more information, contact your Sigma Thermal parts specialist.
Commissioning and Start-up Support
Operator Training
Maintenance Support
On-site inspection
Retrofits/Upgrades
Telephone Support
Our Blog
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