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WhisperKOOL Extreme 3500tiR Ducted Cooling Unit


WhisperKOOL Extreme 3500tiR Ducted Cooling Unit Review

When the wine cellar is fully insulated and sealed with a proper vapor barrier (each wine cellar is unique and has specific cooling requirements; heat load calculations should always be performed prior to selecting a cooling unit), the WhisperKOOL Extreme 3500tiR Ducted Cooling Unit can accommodate approximately 800 cu.ft. cellar size.

Do you have a different size wine cellar? Or just want to check your options? Check out other WhisperKOOL Ducted Self-Contained Extreme tiR Cooling Units now! You can also browse our other Ducted Cooling Units.

The Extreme 3500tiR, 5000tiR, and 8000 tiR introduce the variable-speed fans to WhisperKOOL’s most advanced and powerful cooling system. Utilizing these fans, this high-capacity unit can maintain optimal cellar conditions. The system is designed for powerful operation, efficiency, high reliability, and longevity with excellent performance in a wide range of working environments. 

The Fully Ducted Extreme tiR Series units can be positioned up to 25 ducted feet from the cellar, creating a noise-free cellar environment. Fully-ducted installation provides many installation options, allowing you to not only put the unit in more remote areas of the home but to also have full control of where the exhaust air vents to. 

This series features an advanced liquid temperature controller with a remote LED display (which can be placed up to 300 line feet from the unit) and an electronic thermostat. Maintain 55°F and 50-70% relative humidity in wine cellars.


  • Cooling unit can be located up to 25 ducted feet from the cellar
  • Remote digital LED readout w/ 50ft. communication line
  • Variable-speed fans
  • Noise-free cellar environment
  • Reliable starting and running performance, even under the most extreme outdoor condition
  • Quiet operation technology delivers sound levels as low as 51 db
  • 55°F temperature differential

    24V Thermostat Conversion Kit (OPTIONAL)

    Introducing our new 24-volt thermostat conversion kit for WhisperKOOL split systems! Utilize industry-leading technology from major manufacturers to monitor the environment of your cellar. 

    • Connect your thermostat to Wi‑Fi to control the temperature from your phone, tablet, or laptop.
    • Monitor run time and energy usage.
    • Set alarm notifications.
    • View your cellar conditions from your mobile device.

    The use of the 24-volt thermostat conversion kit eliminates the thermostat normally included with the system and allows your contractor to select, purchase and install the thermostat technology of your choice, including but not limited to Nest, Ecobee, and Honeywell.

    By selecting the 24V Thermostat Conversion Kit, you 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 thermostat to run the equipment.

    • Not utilizing the thermostat from WhisperKOOL also eliminates the use of the bottle probe.
    • WhisperKOOL does not provide smart thermostats. Those must be purchased separately.
    • WhisperKOOL customer service staff do not provide technical support for customers’ selected thermostats.



    Model: Extreme 3500tiR
    Cellar Size:
    Approx. 800 cu.ft. when wine cellar is fully insulated and sealed with a proper vapor barrier
    BTU/h (85°F condenser air intake temperature: 2688
    Dimensions (L x W x H):
    39.5" x 14.25" x 22.5" (with duct plenums)
    Refrigerant: R-134a
    HP: 1/4
    Refrigeration Tons: 0.22
    Voltage Rating: 115V (20-amp dedicated circuit required); 230V (subject to availability)
    Weight: 115 lbs
    Amps: 9 (running amps)
    Duct Size: 8" supply, 8" return (evaporator and condenser)
    Drain Line: 3/8" ID clear plastic tubing (NOT PROVIDED)
    Installation: Can be installed up to 25 duct feet away from the cellar
    Advanced digital display (50-ft. cable), liquid-temperature-measuring bottle probe (50-ft. cable)
    Temp. Delta: Can maintain a 55°F cellar temperature with up to 110°F condenser air intake temperature
    Ducting Options:
    Condensing side can be ducted
    Two-year limited warranty (parts and labor) / Five-year limited warranty (compressor)

    WhisperKOOL Ducted Self-Contained Extreme tiR Cooling Units Specifications

    WhisperKOOL Extreme 3500tiR Ducted Cooling Unit Specifications


    Buy the WhisperKOOL Extreme 3500tiR Ducted Cooling Unit today and enjoy your amazing wines at its best temperature!

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