Optimise your Fired Heaters with Proven Engineering Expertise

Patented solutions that solve the toughest heater challenges | Over 500 projects worldwide

Furnace Improvements Services (FIS) has been helping refineries improve the efficiency, reliability, and performance of fired heaters for over 29 years. With a focus on solving complex design and operational challenges in the oil and gas industry, our team brings deep engineering expertise backed by proven, patented technologies.

We’ve completed over 500 successful projects globally, supporting clients with engineering studies, performance assessments, revamp designs, and turnkey implementations. In many cases, we’ve improved units that others had deemed too difficult to optimise.

FIS technologies have also contributed to emissions reduction initiatives, including lowering NOx in refinery operations. Our goal is always to deliver the most technically sound and economically viable solutions, supported by a team that operates globally from offices in the U.S. and India.

Our clients include leading industry names such as Citgo, Valero, Phillips 66, Alon USA, HollyFrontier, and TotalEnergies.

Global Engineering Support Across Time Zones

In addition to our headquarters in Sugar Land, Texas, FIS operates an engineering office in Noida, India. This global structure allows us to work continuously across time zones—delivering faster turnaround, tighter project management, and full-cycle design support including detailing, drafting, and CFD modeling. Our 24/7 work cycle reflects our commitment to doing it once—and doing it right.

Our Services

FIS is consistently dedicated to working on furnace (fourneau) improvement solutions that enhance the fired heaters and boilers' reliability, efficiency, and longevity. Our company has had the pleasure and privilege of helping our clients in the oil and gas industry benefit from our design and engineering services since 1996. We undertake turnkey projects for the engineering, procurement, supply, and construction of fired heaters.

Our design and engineering work, including process, mechanical, structural, CFD analysis, 3D modeling, and drawings, is carried out in-house. Our services include Engineering Studies, Revamp, Supply, Troubleshooting & Training. We provide technically sound and cost-effective solutions for all the needs of a fired heater project.

Our Scope of Services includes-