EXTRCOOL wins CB certification for rear door heat exchangers

EXTRCOOL said it earned IECEE CB certification for its rear door heat exchanger RDHX product line, a step it says should make it easier for data center buyers to clear international safety requirements. The certification adds to the company’s existing CE, RoHS, UL and CCS credentials as it pushes cooling equipment into more markets.

Why it matters: - IECEE CB certification is recognized across more than 50 participating countries, so the approval can reduce duplicate safety testing for buyers in multiple regions. - The certification can lower technical due diligence costs for data center operators and infrastructure integrators seeking compliant thermal management equipment. - EXTRCOOL says the milestone strengthens trust in its rear door heat exchanger RDHX products as demand rises for high-density cooling in AI and data center environments.

What happened: - EXTRCOOL received official CB certification after completing the underlying test framework for its rear door heat exchanger RDHX product line. - The company announced the result from Foshan, Guangdong, China, on Sept. 17, 2026. - EXTRCOOL also markets itself as a China top rear door heat exchanger RDHX supplier.

The details: - The rear door heat exchanger RDHX replaces standard server rack doors and uses internal liquid circulation to pull heat away at the source. - EXTRCOOL’s RDHX units mount on the back of server cabinets and capture server exhaust heat before it enters the room. - The company says the system can be installed without major raised-floor retrofits, which supports a plug-and-play setup for data centers. - The cooling hardware uses anti-corrosion materials and is designed for 24/7 continuous operation with minimal maintenance. - The CB Scheme reviews electrical insulation safety, structural material durability and fluid handling stability. - EXTRCOOL says the certification matters for buyers in North America, Europe and Australia. - Before this certification, the production lines already held CE, RoHS, UL and CCS certifications. - EXTRCOOL says it is headquartered in Guangdong and has a branch financial office in Singapore. - The company says it has delivered liquid cooling products to more than 100 countries and regions. - EXTRCOOL says its global installation base exceeds 4 million cooling devices and supports computing projects with more than 10GW of combined power capacity. - The company also manufactures refrigeration and cold storage equipment for commercial catering, food logistics and industrial cold storage.

Between the lines: - The certification gives EXTRCOOL another globally recognized proof point at a time when data center buyers are under pressure to reduce cooling risk and speed procurement. - Standardized factory testing can make cross-border deployments easier because the same unit should meet the same baseline requirements in different markets. - The company is positioning RDHX systems not just as a cooling product, but as part of a broader compliance and deployment package. - EXTRCOOL says advanced liquid cooling has helped some computing centers push Power Usage Effectiveness below 1.05 and cut energy use by more than 40%.

What's next: - EXTRCOOL says its engineering teams plan to focus on two-phase liquid cooling technology. - The company aims to use phase change of the working fluid to reach ultra-high heat flux density heat dissipation. - EXTRCOOL says it will continue refining current hardware while researching next-generation thermal dynamics for lower power consumption and higher efficiency. - The company says engineering and support teams can provide technical data, certification packages and design recommendations for customized deployments. - More information is available in the company’s announcement and on social media.

The bottom line: - EXTRCOOL is using CB certification to reinforce its pitch as a globally compliant supplier of rear door heat exchangers for high-density data center cooling.