About Celsia

Performance-Engineered for Extreme Reliability.

Custom Heat Sink Solutions

Celsia delivers performance-engineered thermal solutions with unmatched expertise in two-phase designs—serving industries where conventional cooling falls short of extreme demands. Backed by high-grade, fully traceable materials and MIL-STD-810H validation, our solutions are proven to perform under the harshest conditions.

Our design, prototyping, and production facilities, along with our quality and high-availability engineering sales departments, are structured to meet the demands of custom small-to-mid-volume heat sink orders. We prioritize fast response times, SWaP-C design optimization, and designs validated to meet demanding performance and reliability standards.

Aerospace

Telecom

Defense

Industrial

Advanced Two-Phase Expertise

Celsia is a U.S. corporation specializing in custom heat sink solutions using two-phase technology: heat pipes, vapor chambers, thermosiphons, and phase change materials. Our advanced two-phase solutions are designed for complex, high-demand applications and efficient, scalable manufacturing.

 With thousands of successful thermal solutions delivered, we excel in application-specific heat pipe and heat sink design, ensuring optimal performance and manufacturability.

Our approach includes:

Iterative Thermal Modeling & CFD Simulation – Optimizing designs before prototyping.
Testing Prototypes – Ensuring performance, durability, and efficiency meet customer requirements.
Custom Two-Phase Engineering – Tailoring materials, wick structures, and fluid configurations for specific applications.
Raw Material Testing – Copper, powdered metal, and fluids undergo purity validation.
First Article & Mass Production Testing – Thermal resistance, thermal cycling, high-temperature exposure, humidity testing, helium leak detection, burn-in validation, and other testing per customer requirements.
Compliance & Certification – ISO-certified, ITAR-compliant, and adhering to MIL-STD-810, RoHS, and REACH standards.

Celsia’s thermal management solutions push the boundaries of performance, reliability, and design—advancing the capabilities of innovative technologies.