ACT (Advanced Cooling Technologies)

Updated 15 Jul 2026
Manufacturer United States Listed
14 Products
5 Services
23 Years Active
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About ACT (Advanced Cooling Technologies)

Advanced Cooling Technologies, Inc. (ACT) is a premier thermal management solutions company focusing on custom applications of two-phase heat transfer technology. Started in 2003 as an R&D company, ACT has grown into a leading manufacturer of thermal management products for diverse industries and applications, including satellites, military vehicles, medical devices and imaging equipment, primary calibration equipment, and HVAC systems.

ACT offers a complete range of thermal engineering services — from initial concept generation and product design through high-volume production of fully integrated thermal management solutions. The company supports customers at every stage of the design cycle, providing performance and cost-optimized technologies tailored to each application's unique requirements.

In the space sector, ACT designs and manufactures heat pipes, loop heat pipes, cold plates, and other thermal control hardware deployed on numerous commercial and government satellite missions, combining the technical depth of an established industry leader with the responsiveness of a smaller specialized company.

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Products

14

Advanced composite structural solutions for space and aerospace applications including spacecraft bus structures, solar array substrates, booms, and support structures with maximum strength-to-weight performance.

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Flight-proven

Precision-engineered aerospace CCHPs with over 118 million space flight hours heritage, manufactured under ISO 9001:2015 and AS9100D certified quality systems.

7

Alkali metal heat pipes operating from 400°C to 1,100°C using potassium, NaK, or sodium in stainless steel or Haynes envelopes for nuclear space power, solar thermal, and hypersonic applications.

1 8

Custom heat spreaders with embedded copper-water heat pipes offering effective thermal conductivities of 10,000–100,000 W/m·K, designed to collect and move heat from multiple component hotspots to card edges or remote heat sinks.

1 16

Aluminum honeycomb sandwich panels serving dual roles as spacecraft structural shells and heat rejection radiators, with embedded CCHPs, high-conductivity face sheets, and selectable emissivity coatings.

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Flight-proven

Patented Isothermal Card Edge wedge locks that reduce card-to-chassis thermal resistance by over 33% vs. standard wedge locks, VITA 48.2 compliant with spaceflight heritage for Space VPX applications.

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Flight-proven TRL 6 · Prototype

High-capacity two-phase heat transport devices that move larger amounts of heat over longer distances than conventional heat pipes, with sintered nickel, hybrid, and 3D-printed wick options.

2 7
Flight-proven

High-performance PCM thermal energy storage devices that absorb pulsed or duty-cycled heat loads with minimal temperature rise, for single and two-phase liquid cooling loops.

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Flight-proven

Flight-proven copper-water heat pipes for high heat flux satellite electronics cooling, capable of handling up to 50 W/cm² with first flight heritage from ISS in 2017.

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Custom single-phase liquid cooling loops for spacecraft applications, integrating cold plates, accumulators, cooling lines, and heat exchangers to manage high-heat-flux electronics where passive methods are insufficient.

4 3
Flight-proven

A dual-mode spacecraft thermal device combining VCHP and thermal diode functions in a single gas-charged aluminum-ammonia design, eliminating the separate NCG reservoir for reduced mass and cost.

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Planar two-phase heat spreaders with effective thermal conductivities of 5,000–200,000 W/m·K, available in standard copper/water and advanced low-CTE aluminum nitride ceramic variants handling over 700 W/cm².

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Flight-proven

Passive spacecraft thermal control devices combining two-phase working fluid with a Non-Condensable Gas reservoir to automatically regulate evaporator temperature across wide power and sink condition ranges.

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Additional Services

5
Engineering & analysis
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Custom Heat Pipe Assembly Manufacturing

ACT, as a leading heat pipe manufacturer, offers the service of manufacturing custom heat pipe assemblies. These assemblies are developed specifically to meet a customer's design requirements, addressing the increased demand for system-ready solutions. The service includes creating heat pipes…

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Engineering Services

ACT offers post-delivery engineering services aimed at expanding the return on investment (ROI) for customers. These services include providing spare parts, facilitating return and repair processes for products, and offering field servicing. This ensures continued support and maintenance for the…

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Passive Thermal Control System Enhancement

ACT specializes in enhancing and optimizing the performance of passive thermal control systems, aiming to expand their operational limits for customers. This service helps customers leverage passive solutions, even for high-power applications (over 100 kW), before resorting to more complex…

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Product Development

ACT provides product development services, focusing on solving customer challenges with proven products that are custom-engineered for specific applications. This involves collaborating with customers to develop custom thermal solutions for complex challenges, applying deep engineering expertise to align system-level requirements…

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Other services
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Thermal Management Strategy Optimization

ACT's team collaborates with customers to develop custom thermal solutions for complex challenges, applying deep engineering expertise to align system-level requirements with the right thermal technologies. This service ensures optimal performance by purpose-building solutions for specific end uses. The process…

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