YORK logo
Search
Find a Dealer
Navigation
YORK logo
  • Products and Solutions
    Back
    Close Products and Solutions
    Heating and Cooling
    • Air Conditioners
    • Air Handlers
    • Evaporator Coils
    • Furnaces
    • Heat Pumps
    • Mini-Split Systems
    • Packaged Units
    Indoor Air Quality
    • Energy Recovery Ventilator
    • Hybrid Electronic Air Cleaner
    • Media Air Cleaners
    • Portable Air Cleaners
    • Steam Humidifier
    • Ultraviolet Air Treatment System
    • Whole-house Bypass Humidifier
    • Whole-house Dehumidifier
    • Whole-house Fan-powered Humidifier
    Packaged and Split DX Systems
    • Commercial Split Systems
    • Dedicated Outside Air Systems
    • Packaged Outdoor Units
    • Packaged Rooftop Units
    Thermostats
    • Hx Touch-screen Thermostat
    • Hx3 Touch-screen Thermostat
    • Hx3 Zoning System
    • Universal Thermostat Adapter
    Ductless and VRF Systems
    • Duct-Free Mini Split Systems
    • Variable Refrigerant Flow Systems
    Parts
    • Genuine Parts
  • Buying YORK®
    Back
    Close Buying YORK®
    Getting Started
    • Installing a New System
    • Price Guide
    • Purchase Process
    • Repair or Replace?
    • Working with a Dealer
    • Energy Savings Calculator
    • Side Discharge and Top Discharge HVAC Units
    • Summer Offers
    HVAC 101
    • How HVAC Systems Work
    • HVAC Glossary
    • Improving Air Quality
    • Understanding Energy Ratings
    Financing & Savings
    • Financing
    • Rebates & Savings
    • Inflation Reduction Act
    • Canada Greener Homes Grant
  • Owner Resources
    Back
    Close Owner Resources
    Maintenance
    • Pre-service Checklist
    • Troubleshooting Guide
    Warranty and Registration
    • Warranties
    Homeowner Support
    Energy Savings Calculator
  • YORK® Advantage
    Back
    Close YORK® Advantage
    Proven Quality
    Awards and Recognition
    Certified Comfort Experts
    Sustainability
    • Electrification and Decarbonization
    • Refrigerant Transition
Find a Dealer
Close
  • Products and Solutions
    Back
    Close Products and Solutions
    Heating and Cooling
    • Air Conditioners
    • Air Handlers
    • Evaporator Coils
    • Furnaces
    • Heat Pumps
    • Mini-Split Systems
    • Packaged Units
    Indoor Air Quality
    • Energy Recovery Ventilator
    • Hybrid Electronic Air Cleaner
    • Media Air Cleaners
    • Portable Air Cleaners
    • Steam Humidifier
    • Ultraviolet Air Treatment System
    • Whole-house Bypass Humidifier
    • Whole-house Dehumidifier
    • Whole-house Fan-powered Humidifier
    Packaged and Split DX Systems
    • Commercial Split Systems
    • Dedicated Outside Air Systems
    • Packaged Outdoor Units
    • Packaged Rooftop Units
    Thermostats
    • Hx Touch-screen Thermostat
    • Hx3 Touch-screen Thermostat
    • Hx3 Zoning System
    • Universal Thermostat Adapter
    Ductless and VRF Systems
    • Duct-Free Mini Split Systems
    • Variable Refrigerant Flow Systems
    Parts
    • Genuine Parts
  • Buying YORK®
    Back
    Close Buying YORK®
    Getting Started
    • Installing a New System
    • Price Guide
    • Purchase Process
    • Repair or Replace?
    • Working with a Dealer
    • Energy Savings Calculator
    • Side Discharge and Top Discharge HVAC Units
    • Summer Offers
    HVAC 101
    • How HVAC Systems Work
    • HVAC Glossary
    • Improving Air Quality
    • Understanding Energy Ratings
    Financing & Savings
    • Financing
    • Rebates & Savings
    • Inflation Reduction Act
    • Canada Greener Homes Grant
  • Owner Resources
    Back
    Close Owner Resources
    Maintenance
    • Pre-service Checklist
    • Troubleshooting Guide
    Warranty and Registration
    • Warranties
    Homeowner Support
    Energy Savings Calculator
  • YORK® Advantage
    Back
    Close YORK® Advantage
    Proven Quality
    Awards and Recognition
    Certified Comfort Experts
    Sustainability
    • Electrification and Decarbonization
    • Refrigerant Transition
  1. YORK®
  2. Residential and Light Commercial Equipment
  3. Heating and Cooling
  4. Heat Pumps
  5. CYK Water-to-Water Compound Centrifugal Chiller/Heat Pump
CYK product image
  • CYK thumbnail

CYK Water-to-Water Compound Centrifugal Chiller/Heat Pump

7,000 – 38,000 MBH (2,051 – 11,136 kW) heating

Back to Top
Icon of a thunderbolt enclosed in an arrow forming a circle Energy Calculator >
Icon of two text messages Get Help/Support >
Icon of a sheet of paper with arrows pointing inwards on a greay background Product Selector >
Dollar icon enclosed in two arrows forming a circle Finances and Rebates >

CYK Water-to-Water Compound Centrifugal Chiller/Heat Pump

  • Overview
  • Features & Benefits
  • Warranty
  • Related Products
  • Technical Specification
  • Owner Resources
    Find a Dealer

    All-new CYK-400

    York extended the application range of the CYK product line with the all-new reduced capacity CYK-400. This new range offers 3–5x more efficiency than conventional fossil fuel burning systems, reducing operational costs up to 50% vs. a traditional boiler and chiller combination. The CYK-400 has been engineered to adapt to a variety of applications from data centers and dry cooling to light commercial buildings, small hospitals and industrial processes. Engineered with sustainability in mind, CYK-400 is available with low GWP (global warming potential) refrigerants R-1234ze and R-515B. We're not waiting for the future. We're engineering it
    Download Flyer
    All-new CYK-400

    Benefits

    Superior High-Head Performance
    SUPERIOR HIGH-HEAD PERFORMANCE

    The two-compressor design offers superior performance in air-cooled, brine-chilling, ice-thermal and heat-pump applications.

    Adaptability
    ADAPTABILITY

    Each compressor can be optimized to match application requirements and operating conditions.

    Reliability
    RELIABILITY

    Quantum LX Control Center simplifies operation.

    Features

    • Two electric motor-driven centrifugal compressors deliver simultaneous hot water and chilled water @ 42 °F (5 °C) / 180 °F (82 °C)​
    • At 400 tons (1,406 kW) cooling and 7,000 MBH (2,051 kW) heating the CYK-400 offers a reduced capacity with all the features expected from the CYK product line
    • Certifications: ASME, UL/ETL
    • Optional, patented double-bundle condenser for the most efficient management of part-load conditions
    • Compressors and motors mounted above the shells for a compact footprint
    • Patented OptiSoundTM Control for reduction in operational sound levels
    • Turndown: 25% of design capacity made possible through VSD and compressor VI control technologies
    • Refrigerants: R-1234ze or R-515B
    • Compound chiller design (two compressors in series)
    • Quantum LX Control Center
    • Capacity control on each compressor for better off-design performance

    Warranty

    With a YORK® residential system, comfort is more than a feeling – it’s a promise. Because YORK® home comfort systems are built to the highest standards and backed by the best warranties.
     
    Register Your Warranty
    Industry worker working on a machine

    Related Products

    SMART READY
    YZ Magnetic Bearing Centrifugal Chiller

    YZ Magnetic Bearing Centrifugal Chiller

    SMART READY
    YK Centrifugal Chillers

    YK Centrifugal Chillers

    Titan™ OM Custom Design Centrifugal Chiller

    Titan™ OM Custom Design Centrifugal Chiller

    Owner Resources

    YORK® | Getting Started

    Getting Started

    YORK® | HVAC Glossary

    HVAC Glossary

    YORK® | Pre-service Checklist

    Pre-service Checklist

    Support

    Icon of a building enclosed in a sqaure with a spanner BUYING OR SERVICING A SYSTEM

    Contact your local dealer for help with your existing system or to learn more about investing in a new one.

    Tick mark icon within a cloud enclosed in a shield WARRANTIES AND REGISTRATION

    Find your local dealer for more information on our warranties and warranty registration.

    Dollar icon enclosed in two circular arrows FINANCING

    Learn about our affordable financing plans so you can purchase a new YORK® comfort system that fits your budget.

    Technical Resources

    Document Name
    Description
    Language
    Resource Type

    Video

    YORK CYK Heat Pump - Modes of Operation (English)

    Video: YORK CYK Heat Pump - Modes of Operation

    English Video
    View

    Flyer

    CYK-400 Product Flyer (English)

    CYK-400 Product Flyer

    English Flyer
    View

    Case Study

    160.82-EG1 (English)

    CYK Engineering Guide

    English Case Study
    View

    Brochure

    YORK CYK Water-to-Water Heat Pump, Saving with Sustainability Sales Brochure, PUBL-4030 (English)

    CYK Brochure

    English Brochure
    View

    Flyer

    CHI_FLY_Optisound Control, Product Sheet, PUBL-6683 (English)

    OptiSound Control Flyer

    English Flyer
    View

    Flyer

    CHI_CS_Increasing Central Plant Efficiency via a Water to Water Heat Pump (English)

    Case Study: Increasing Central Plant Efficiency

    English Flyer
    View

    Case Study

    CHI_CS_CYK Compound Centrifugal Resources Chillers (English)

    Case Study: St. Michael’s Hospital

    English Case Study
    View

    Flyer

    CHI_FLY_Turbine YK EP Centrifugal Chiller with Economizer (English)

    Boost the Output of Gas-turbine Generators

    English Flyer
    View
    No resource found for selected filter

    Back

    Next

    Great Financing Options Available

    Get the Details
    *To receive the extended 10-year parts warranty or premium system warranty for qualifying units, you must register online at www.upgproductregistration.com. Registration must be completed within 90 days of installation or 90 days of the closing date for new home construction. Failure to register online within 90 days results in a standard 5-year parts warranty. Failure to return the registration card does not affect rights under the standard warranty.
    • Residential Products
    • Local Rebates & Savings
    • Warranties & Registration
    • Get Support
    • For Dealers & Distributors
    • Proposition 65 Warning
    For Your Home
    • Residential Products
    • Local Rebates & Savings
    • Warranties & Registration
    • Get Support
    • For Dealers & Distributors
    • Proposition 65 Warning
    • Residential Products
    • Local Rebates & Savings
    • Warranties & Registration
    • Get Support
    • For Dealers & Distributors
    • Proposition 65 Warning
    For Your Home
    • Residential Products
    • Local Rebates & Savings
    • Warranties & Registration
    • Get Support
    • For Dealers & Distributors
    • Proposition 65 Warning
    York logo white
    © 2026 Johnson Controls. All Rights Reserved.
    • JohnsonControls.com
    • Privacy
    • Terms & Conditions