STULZ manufactures precision cooling and humidity-control equipment for data centers and other mission-critical applications. Its portfolio includes room-cooling, high-density and rack-based cooling, liquid cooling, micro data centers, air handling units, chillers, monitoring systems, shelter cooling, and humidifiers, supported by customized engineering, testing, installation, and service capabilities.
ISO 9001
ISO 14001
ISO 50001
Skil-aireFor 50 years, Skil-aire has manufactured precision cooling and environmental-control systems for facilities where temperature stability and uptime are critical, from datacenters and trading floors to medical and defense sites. A TitheCorp company based in Baltimore, it builds systems in-house and supports projects with a nationwide team of more than 400 engineers and technicians. Its Guardian systems can hold temperature within ±0.5°F for demanding 24/7 environments, including landmark installations such as San Francisco’s 181 Fremont.BALTIMORE, MD
NortekNortek brings together custom air-handling, HVAC, data-center cooling, and cleanroom systems for demanding building environments. Its data-center cooling operation spans multiple locations and more than one million square feet of manufacturing space, while its cleanroom solutions are tailored for settings ranging from semiconductor fabrication to biopharma research. The company is part of the Madison Air family of brands.MANHEIM, PA
USystems LtdUSystems designs and manufactures cooling and infrastructure equipment for data centers, with its ColdLogik rear-door cooling technology at the center of its offering. The UK-based company operates from a two-acre manufacturing facility and head office, with sales offices in the USA, UAE and India, and supplies projects installed in more than 30 countries. USystems is a Legrand brand and holds ISO 9001 certification, alongside recognition including the 2021 RAC Cooling Manufacturer of the Year award and the Queen’s Award for Innovation.ROCHESTER, NY
OptiCool TechnologiesFrom its Webster, New York headquarters and 450,000-square-foot manufacturing facility, OptiCool Technologies designs and builds two-phase pumped-refrigerant cooling systems for data centers. Its Delta4T™ platform uses vaporizing refrigerant as the primary heat sink, supporting rack-level cooling up to 120 kW and serving both retrofit projects and new modular facilities. Founded by CEO Mark Chaney, the company manufactures and assembles its systems in-house and supports deployments with installation and service.ROCHESTER, NY