BUFFALO, N.Y., May 2026 — API Heat Transfer, a 150-year leader in industrial thermal solutions, today announced the launch of the SIGMA M186, a high-performance gasketed plate-and-frame heat exchanger purpose-engineered for the cooling demands of modern large-scale data centers. More information about the product is available at the dedicated microsite datacenterphe.com.

Cooling drives nearly 40% of data center power consumption, and as AI workloads expand, cooling infrastructure is becoming the primary determinant of data center operating cost. The SIGMA M186 was designed to directly address this challenge. It achieves a validated 0.5°C temperature approach between the internal and external cooling loops — well below the 2°C industry standard and the 1°C best-practice design target — extending the number of days per year that facilities can operate in free cooling mode rather than running their chillers.

For a typical mid-latitude U.S. installation, the M186’s tighter temperature approach delivers approximately 10 additional free cooling days per year compared to a unit operating at the industry standard. The financial impact scales directly with facility size: a hyperscale operator avoids approximately $140,000 per day in chiller energy on free cooling days, and a 100 MW AI campus avoids approximately $700,000 per day.

The SIGMA M186 represents our commitment to the data center market — not as an adapted industrial product, but as a purpose-built thermal solution engineered for the conditions operators actually face in the field.

The M186 supports the full range of modern data center cooling architectures, including water-side economizer cooling, primary-to-secondary loop isolation, direct-to-chip liquid cooling, rear-door heat exchanger integration, high-temperature warm water cooling, and immersion cooling secondary loops. A single unit delivers 15+ MW of cooling capacity, with multiple units operating in parallel for larger facility loads.

Every component of the M186 — plates, gaskets, and frames — is designed and manufactured in-house by API Heat Transfer. All plates undergo AI-assisted visual inspection and proprietary crack detection. The M186 is certified to ASME, PED (EU Pressure Equipment Directive), AS1210 (Australian standard), NR-13 (Brazilian standard), and CRN (Canadian Registration Number), enabling global deployment without redesign or re-certification. With a proper maintenance program, gasketed plate-and-frame heat exchangers can operate reliably for 30 years or more.

More information on the SIGMA M186 is available now. Engineering consultations and application-specific analysis are available through API Heat Transfer’s engineering team.