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Quantum Twin 18000 – Ducted (220V Condenser)

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Quantum Twin Series cooling systems are designed to cool large scale wine cellars & wine collections. The Quantum Twin 18000 cooling unit is one of the highest-capacity units that we offer. This split system includes multiple ducting options allowing for ease and flexibility of installation as well as accessibility. The air handler can be ducted up to 25 feet, creating a virtually silent cellar environment.  The evaporator coil is coated with an electro-fin coating to minimize corrosion.


This cooling system is designed to operate in ambient conditions as low as -15 degrees and is crafted with the highest quality, professional-grade parts for longevity and performance. The Quantum Series is sure to give you that extra boost of cooling power and the quality you have come to expect from WhisperKOOL.


Need some wine racks to pair with your cooling system? Visit our sister company Ultra Wine Racks & Cellars for all your modern wine-racking needs.


Still have more questions? Feel free to contact our client support team or visit our FAQ page for frequently asked questions about our cooling systems.


Note: A qualified HVAC-R technician is required for the installation of the Quantum Twin 18000. Failure to have the system installed by a qualified technician will void the warranty.


*PLEASE NOTE: WhisperKOOL does not provide smart thermostat. By selecting the 24V Thermostat Conversion Kit, you have acknowledged that the system will not be built with the standard WhisperKOOL control or liquid measuring bottle probe. You will have to source and purchase your own 24V smart thermostat to run the equipment. The WhisperKOOL Customer Satisfaction Team does not provide technical support for smart thermostats.

3D Tour (Application Example)


13,806 – 18,250

The BTU/h value range shown here is a theoretical number. There are often circumstances under which a cellar design may require a larger unit due to variables not accounted for in the formula. For example, these variables could be building materials (such as glass, stone, concrete, etc.) which do not offer the insulation capacity required to maintain the optimal cellar environment. We recommend purchasing a unit with a larger capacity to compensate for these unaccounted-for variables. An undersized unit can lead to premature failure and will most likely prevent the cellar from reaching your desired temperature.


Cellar Wizard

For more specific calculations, we have a tool which accounts for these variables. Please utilize this tool in order to ensure you are selecting the proper cooling unit for your application. Our tool is called the Cellar Wizard.


Note: The systems do not include a line set.

Product Video

Product Specs

Quantum Series

Please click below to view all product specifications for the Quantum Series cooling systems.



Owner Manual

H.E. Owner Manual

Please click below to read and download the owner manual for this cooling system.



220V High Efficiency Condenser

The 220V High Efficiency Condensers offer a host of advantages over our traditional 110V condensers, including simplified installation, ultra-quiet operation, energy efficiency, & ability to operate in extreme climates. For more information about our latest Split-System innovation, please watch the following videos:

Annual Maintenance Program

Annual Maintenance Program

WhisperKOOL systems are designed for a long service life. In order to ensure your system performs at peak efficiency, and to prevent your wine cellar from experiencing unscheduled downtime, annual preventative maintenance is essential.


We work with qualified HVAC specialists to offer maintenance programs for our cooling units. By enrolling in the Annual Maintenance Program (AMP), you can prevent spending thousands of dollars on major repairs that could be prevented with regular system maintenance.



Duct Splitting Guidelines

Duct Splitting Guidelines

The following information is meant to be used as a general guideline for splitting ducts on WhisperKOOL systems. Often when designing a duct setup for a wine cellar, there is a need to run multiple supply and return ducts to ensure adequate air mixture and cooling based on the unique shape of the space. When splitting ducting from one main duct into two ducts, it is recommended that the total area of the ducts after the splitting not be less than the original duct area. Explore what this means:



IMPORTANT: Warranty Information

Product Warranty for Split System Units

A limited 2-year product warranty is offered with all split systems. While the warranty starts at the date of purchase, this warranty is not activated until a Product Warranty Checklist has been submitted and approved by WhisperKOOL.

The checklist may either by submitted online or you mail download and email the checklist to warranty@whisperkool.com.



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    warranty activation
    by installation technician.


    OUR essential to our goal of customer satisfaction. We need you to assist and support the products’ performance and longevity by assuring the technician completes the start up warranty checklist and submits it for approval. LEARN MORE


    We are available to work with you and your technician to assure all variables regarding installation are understood and accounted for before, during and after installation. If you do not have a technician, we have resources to help find a technician. LEARN MORE


    Maximize performance and longevity by having your technician perform an annual maintenance service on the system. This involves cleaning the system to ensure debris, mold or any contaminants are eliminated from the system and that other operating parameters are within the required guidelines. LEARN MORE