YORK CYK‑400 Heat Pump

Electrification is accelerating rapidly across global heating and cooling markets, and demand for flexible, high‑efficiency heat pump solutions continues to rise. Analysts expect double‑digit growth in heat pump adoption worldwide, with some countries projected to exceed 30% annual increases ¹. This shift is being mirrored in the UK as organisations look for low‑carbon alternatives to traditional boiler systems.

As part of the trusted Johnson Controls YORK Water‑Cooled chiller portfolio, the CYK‑400 brings proven high‑performance capability to sites where plantroom space is at a premium. It is purpose‑built for applications that require high temperatures, high efficiency and reliable year‑round operation

Building on more than 140 years of engineering expertise, the CYK‑400 is the most compact model in the YORK CYK family. Despite its smaller footprint, it delivers the same world‑class performance as larger units in the range. Visitors to industry events such as the AHR Expo in Las Vegas can explore the CYK‑400 alongside the wider Johnson Controls portfolio of HVAC and building automation technologies.
 

High‑temperature performance in a compact design

Engineered for high‑head, high‑temperature applications, the CYK‑400 can produce hot water temperatures of up to 82°C while simultaneously delivering chilled water from the same system. This dual‑output capability makes it an excellent fit for:

• Commercial buildings
• Universities and research facilities
• Hospitals and healthcare estates
• Industrial processes
• District energy and heat network schemes

Despite its compact size, the CYK‑400 delivers impressive performance:

• 400 tons (1,406 kW) of cooling capacity
• 7,000 MBH (2,051 kW) of heating capacity
• Combined COP of 4.9 in simultaneous heating and cooling mode
• 40% turndown with the VSD option
• 3 to 5 times more efficient than conventional boiler and chiller combinations
• Up to 50% reduction in operational costs compared to traditional systems
• ASME and UL/ETL certifications

For UK organisations working toward net zero goals, the CYK‑400 also supports low‑GWP refrigerant options, including R‑1234ze and R‑515B. An optional patented double‑bundle condenser enhances part‑load performance, ensuring the system operates efficiently even when demand fluctuates.

Learn more about YORK heat pumps and chillers in the UK, click here.
 

A perfect‑sized solution for decarbonisation

As organisations across the UK and Europe replace ageing boilers and transition away from fossil‑fuel‑based heating, the CYK‑400 offers a powerful and appropriately sized pathway to decarbonisation. Its ability to deliver high‑temperature hot water, support simultaneous heating and cooling and operate with exceptional efficiency makes it a strong choice for estates looking to reduce operational carbon without compromising performance.

Whether supporting a hospital energy centre, a university campus, a commercial tower or an industrial process, the CYK‑400 provides the reliability and efficiency needed to meet modern sustainability and operational targets.

Contact us today to find out how our heat pumps can help your business attain their cost-saving and sustainability goals.