Expert Combustion Heating Services in San Antonio, TX
When your project timeline is tight and temperature-critical fabrication simply can’t afford delays, Onsite USA delivers fast, code-compliant combustion heating solutions right to your San Antonio jobsite. From aerospace assembly lines to energy pipelines stretching through South Texas, we provide mobile, high-temperature combustion heating wherever precision and speed are non-negotiable.
Our team works directly with facilities in San Antonio’s heavy industrial, petrochemical, and defense sectors, providing field-proven heating processes tailored for stress relief, preweld conditions, and hydrogen bakeouts. Whether you're maintaining a pressure vessel at Port San Antonio, welding alloy pipes for a refinery expansion, or drying refractory linings at a nearby power plant, our combustion heating systems get you there faster, with safety and metallurgical precision built into every cycle.
What Is Combustion Heating? And Why Is It a Game-Changer in San Antonio?
Combustion heating is the controlled delivery of flame-generated heat, typically using natural gas, propane, or diesel fuel. The goal is straightforward: apply consistent thermal energy to metal structures and industrial materials, usually before, during, or after welding, or during critical processes like bakeouts or dry-outs.
San Antonio's industrial footprint includes everything from aerospace fabrication at Kelly Field to heavy oilfield equipment and power generation components. In these sectors, combustion heating plays a crucial role in:
- Preheating metal components to reduce weld cracking and hardness
- Post-weld heat treatment (PWHT) for stress relief in high-pressure systems
- Dry-out of refractory-lined furnaces or tanks
- Hydrogen bakeouts to eliminate trapped gases before hydrotesting
In contrast to resistance or induction heating, combustion systems allow for rapid, large-scale heating with mobile deployment and adaptable setups. It’s the go-to method when power availability is limited or large, irregular components need uniform heat coverage.
Why San Antonio’s Industrial Sector Trusts Onsite USA
With a growing number of high-spec facilities in San Antonio, from military contractors to municipal utilities, thermal compliance isn’t just about safety, it’s about avoiding catastrophic failure and maintaining project timelines. That’s why our clients call Onsite USA.
Here’s how we stand out in San Antonio and the surrounding region:
Mobile Field Setup
We deploy combustion heating systems across Bexar County and surrounding areas, supporting military-grade production at Port SA, refinery work in Elmendorf, and pipeline jobs across South Texas.
Code-Adherent Processes
All our heating methods follow ASME Section VIII, B31.1, B31.3, and client-specific QA/QC requirements. Every project is documented with temperature logs and thermocouple verification.
Certified Technicians
Our combustion teams are TWIC-certified, safety trained, and experienced in hot work zones. From gas detection protocols to confined space heating, safety is part of our workflow.
Multi-Zone Flame Control
We use thermal mapping, calibrated burners, and dual thermocouple systems to provide uniform heating profiles with controlled ramp rates, hold times, and cooldown sequences.
Combustion Heating Services Available in San Antonio
1. Pipe & Vessel Preheating
Alloy piping, high-yield steels, and thick-wall vessels often require elevated temperatures before welding. We deliver flame-based preheat with exact control:
- Carbon steels: 150°F–300°F
- Chrome-Moly (CrMo): 300°F–600°F
- Austenitic stainless: Variable profiles as per PQR/WPS specs
2. Post Weld Heat Treatment (PWHT)
Our mobile combustion setups follow precise temperature gradients to relieve stress, reduce hardness, and meet client welding procedure specifications.
3. Refractory Dry-Outs
Whether commissioning a new thermal unit or performing lining repairs, we accelerate refractory moisture removal using portable manifold burners and dry-out control plans.
4. Hydrogen Bakeouts
Facilities near San Antonio frequently require hydrogen removal before hydrostatic testing. We provide ramped temperature soak cycles per API and client specs, ensuring gas elimination from pipe walls and welds.
5. Structural Fit-Up Heating
Fabricators in San Antonio's industrial parks rely on combustion heating for fit-up and prebolt operations on large skids, beams, and offshore modules.
Industries We Serve in San Antonio and South Texas
Aerospace Manufacturing
Supporting thermal treatments for aircraft frame assembly, engine component welding, and DOD-certified QA procedures.
Oil & Gas Operations
Preheating of pipeline sections, flare headers, and process vessels near the Eagle Ford Shale and beyond.
Why Combustion Heating Over Resistance or Induction?
| Heating Method | Ideal For | Limitations |
|---|---|---|
| Combustion Heating | Large-scale field jobs, rapid ramp-up | Open flames, requires ventilation |
| Electrical Resistance | Small-scale, controlled environments | Slower heating, needs power supply |
| Induction Heating | Precision, fast localized treatment | Limited by geometry and surface area |
In San Antonio’s diverse mix of industrial applications, combustion heating gives our clients the balance of mobility, scale, and thermal control that others simply can’t match.
Why Choose Onsite USA for Combustion Heating in San Antonio, TX?
With years of experience in mobile industrial heat treatment, Onsite USA has earned the trust of engineers, contractors, and facility owners throughout Central and South Texas.
We offer:
- Fast deployment across San Antonio and surrounding counties
- Complete heating documentation packages
- Safety-first operations with portable gas detection and SOP-driven execution
- Compliance with all local safety ordinances and jobsite protocols
- 24/7 emergency support for unscheduled outages or shutdowns
Areas We Serve Around San Antonio
We provide onsite combustion heating in:
- San Antonio
- New Braunfels
- Schertz
- Seguin
- Boerne
- Elmendorf
- Pleasanton
- Floresville
- Castroville
- Universal City
- Live Oak
- Port San Antonio and Kelly Field
Get a Same-Day Combustion Heating Quote in San Antonio
Whether it’s a scheduled shutdown or an urgent repair that can't wait, Onsite USA is ready to support your thermal treatment needs with rapid, professional combustion heating services in San Antonio.
Call us today to speak with our field team, get a quote, or schedule an onsite evaluation. We’ll bring the heat, safely, accurately, and on your terms.
Combustion Heating - San Antonio, TX
Frequently Asked Questions
What is a combustion heating system?
It’s a heating method that uses the controlled combustion of fuel to generate consistent, high-temperature heat for welding preparation, PWHT, or refractory dry-outs, ideal for San Antonio’s heavy industries.
How is combustion heat applied in the field?
We use manifold burner systems, torches, and heat shields to safely direct flame to the surface of vessels, pipes, or structures. Thermocouples track temperature for real-time control.
How is combustion heating different from general heating?
Combustion refers to how the heat is generated, by burning fuel. Heating refers to the effect of raising the material’s temperature, whether via combustion, resistance, or induction.
What’s the main purpose of combustion heat?
It’s used for preheating and stress relief, ensuring the mechanical integrity of welds and materials, especially in pressure-rated and high-spec applications.
Why is combustion heating preferred in field conditions?
Because it’s fast, portable, and effective over large areas. In the field, especially in areas like South Texas, combustion heating offers reliability without requiring heavy electrical infrastructure.
