![](https://www.sigmathermal.com/wp-content/themes/sigma-default/img/loading-icon.gif)
Brochures
![Thermal Fluid Heating Systems](https://www.sigmathermal.com/img/Thermal-Fluid-Systems-Heaters.png)
Thermal Fluid Heating Systems
![SHOTS Electric Thermal Fluid Heating](https://www.sigmathermal.com/img/SHOTS-Heating-Brochure.png)
SHOTS Electric Thermal Fluid Heating
![HC2 Heater](https://www.sigmathermal.com/img/HC2-Pre-Engineered-Heater-Brochure.png)
HC2 Heater
![Next Gen Emission Reduction System + Power](https://www.sigmathermal.com/img/preview-full-SIG-ElectraTherm-Brochure-v2e-1-pdf-1.jpg)
Next Gen Emission Reduction System + Power
![Total Customer Care Program](https://www.sigmathermal.com/img/SIG-US-11-Total-Customer-Care-Program.png)
Total Customer Care Program
![Aftermarket Services](https://www.sigmathermal.com/img/SIG-US-12-Aftermarket-Services.png)
Aftermarket Services
![Parts and Services](https://www.sigmathermal.com/img/SIG-US-1-Services-Parts.png)
Parts and Services
![Automation](https://www.sigmathermal.com/img/SIG-US-10-Automation.png)
Automation
![NUK High Pressure Steam Generator](https://www.sigmathermal.com/img/SIG-US-14-NUK-Steam-Generator.png)
NUK High Pressure Steam Generator
![Waste Heat Recovery](https://www.sigmathermal.com/img/SIG-US-4-Waste-Heat-Recovery.png)
Waste Heat Recovery
![Biomass – Retrofits and Services](https://www.sigmathermal.com/img/SIG-US-13-Biomass-Retrofits.png)
Biomass – Retrofits and Services
![Ash Handling Systems](https://www.sigmathermal.com/img/SIG-US-8-Biomass-Ash-Handling.png)
Ash Handling Systems
![Fuel Handling Systems](https://www.sigmathermal.com/img/SIG-US-7-Biomass-Fuel-Handling.png)
Fuel Handling Systems
![Biomass Energy Systems](https://www.sigmathermal.com/img/SIG-US-6-Biomass-Energy-Systems.png)
Biomass Energy Systems
![Direct Fired Heaters](https://www.sigmathermal.com/img/Direct-Fired-Radiant-Convective.png)
Direct Fired Heaters
![Electric Process Heaters](https://www.sigmathermal.com/img/SIG-US-9-Electric-Heater.png)
Electric Process Heaters
![Thermal Fluid Systems](https://www.sigmathermal.com/img/SIG-US-5-Thermal-Fluid-Systems.png)
Thermal Fluid Systems
![Process Bath Heaters](https://www.sigmathermal.com/img/SIG-US-3-Process-Bath-Heaters.png)
Process Bath Heaters
![Product Overview](https://www.sigmathermal.com/img/SIG-US-00-Corporate-Overview.png)
Product Overview
eBooks
![The Benefits of Pre-Engineered Systems](https://www.sigmathermal.com/img/The-Benefits-of-Pre-Engineered-Systems.png)
The Benefits of Pre-Engineered Systems
![Sigma Thermal Secondary Loops](https://www.sigmathermal.com/img/Sigma-Thermal-Secondary-Loops.webp)
Sigma Thermal Secondary Loops
![Is Your Thermal Oil Heater Truly Efficient?](https://www.sigmathermal.com/img/rlimage-1.png)
Is Your Thermal Oil Heater Truly Efficient?
![How Upgrades Can Improve Heating System Capacity, Efficiency, and Reliability](https://www.sigmathermal.com/img/How-Retrofits-Can-Improve-Heating-System-1-2.png)
How Upgrades Can Improve Heating System Capacity, Efficiency, and Reliability
![7 Things to Consider for Successful Spare Parts Management](https://www.sigmathermal.com/img/Spare-Parts-Management-eBook-3D.png)
7 Things to Consider for Successful Spare Parts Management
![Using Glycol in Industrial Heating System Applications](https://www.sigmathermal.com/img/3d-Using-Glycol-in-Industrial-Heating-System-1.png)
Using Glycol in Industrial Heating System Applications
![Microprocessor vs. PLC Based Burner Management Systems](https://www.sigmathermal.com/img/PLC-Vs-Microprocessor1-2.png)
Microprocessor vs. PLC Based Burner Management Systems
![Methods for Implementing Combustion Control](https://www.sigmathermal.com/img/Combustion-Control-ST-3D.png)
Methods for Implementing Combustion Control
![Understanding Safety Instrumented Systems](https://www.sigmathermal.com/img/Understanding-Safety-Instrumented-Systems-2.png)
Understanding Safety Instrumented Systems
![3 Benefits of Proper Maintenance](https://www.sigmathermal.com/img/3-benefits-of-proper-maint-3D-cover.png)
3 Benefits of Proper Maintenance
![Hot Oil Systems Expansion and Drain Structure](https://www.sigmathermal.com/img/3D-cover-hot-oil-systems_preview.png)
Hot Oil Systems Expansion and Drain Structure
![Regeneration Gas Heating: How It Works and What You Should Know](https://www.sigmathermal.com/img/regen-gas-heating-3d-cover@025x.png)
Regeneration Gas Heating: How It Works and What You Should Know
![How Effective Heating Helps Amine Plants Purify Natural Gas](https://www.sigmathermal.com/img/3D-ebook-purify-natural-gas.png)
How Effective Heating Helps Amine Plants Purify Natural Gas
![How to Select the Right Thermal Fluid Heater](https://www.sigmathermal.com/img/Selecting-the-Right-Thermal-Fluid-Heater-e1554739695720.png)
How to Select the Right Thermal Fluid Heater
![4 Questions to Ask Before Requesting Your Electric Process Heater](https://www.sigmathermal.com/img/Electric-Process-Heater-Checklist.png)
4 Questions to Ask Before Requesting Your Electric Process Heater
![10 Keys for Sourcing Electric Fluid Heating Systems](https://www.sigmathermal.com/img/Electric-Thermal-Fluid-Heating-Systems.png)