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Extreme ti 3500 – Through-the-Wall

(8 customer reviews)


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SKU: U-WKEX3500-115-3 Categories: ,


The Extreme ti functions in the same way as the tiR and is intended for through-the-wall installation. The difference between the ti and tiR is that the controller and display will be located on the front face of the unit. In order to monitor your cellar conditions, you will need to physically enter your cellar. If this unit will be installed through an exterior wall, you will need to purchase an exterior housing to protect the unit. If this unit will be installed through an interior wall, the hot air exhaust may be redirected to another location using the condenser ducting plenum kit.


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.


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

3D Tour (Application Example)



The BTU/h value 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

Extreme ti Series

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


Owner Manual

Owner Manual

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


Ventilation Requirement

UV-C Lighting System Option

*Please note that this feature will need an additional 4 inches of clearance on the side of the unit. See the owner manual for more information.

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.


Warranty Information

Product Warranty for Self-Contained Units

A limited 2-year product/5-year compressor warranty is offered with all self-contained cooling units at the date of purchase.


8 reviews for Extreme ti 3500 – Through-the-Wall

  1. Brian C.

    While constructing my new cellar, I selected a SC Pro Series unit for the ease of installation and affordable price point. I became concerned that the ventilation room would get too hot and the unit wouldn’t function properly. After consulting Client Services, they recommended that I go with the Extreme ti that would be able to accommodate higher temperature fluctuations, despite the increase in price. Glad I took their advice! The unit operates well even during the hottest summers. Worth every penny!

  2. Stu Schmidt

    The WhisperKool 3500Ti unit was simple in concept to install, but since mine was inserted through the wall just a few inches below the 10′ ceiling, in practice it was a bit more difficult requiring two guys and a frontend loader. It’s just a little too heavy for two guys to carry up ladders. The fit and finish were great though. It has been in operation now for a while, and is maintaining a consistent temperature. It took less than 24 hours to get not only the air temperature but also the wine temperature down to my set-point. While the unit uses a bottle probe to maintain temperature, I am also tracking the air temperature and RH with a separate device from Govee just so I can track temperature variations in the room itself.

    I am disappointed with the sound level. The manual states the sound level at 51 dBA both inside and outside the cellar on low speed. In practice, I am getting an average of 71 dBA inside and 66 dBA outside the cellar with the fan on low. That’s a significant difference.

    The manual is accurate in stating that a lower fan speed will result in lower humidity. I saw a direct correlation when I reduced the fan speed from high to low after the initial 18 hour cellar cool down period. The RH dropped from 68.5% to 62.5% in just over an hour.

    In retrospect, I should have opted for a ducted unit for less in-cellar noise. However, our cellar isn’t a tasting room, so we can live with it.

  3. Linda Kohn

    This is my 3rd WhisperKOOL wine refrigeration unit since 2005 and by far the BEST and QUIETEST.
    Forget the 1600 and 3000 — and go directly to the “extreme 3500 ti” — if you can afford it.
    Fits in the same opening and far, far superior to the others units. Doesn’t cycle so often or make as much noise

  4. Dman

    WhisperKOOL Customer Service

    We installed a WhisperKOOL Extreme 3500ti in our new home. The unit started making a whistling noise. I called WhisperKOOL customer support and they were excellent to deal with. Sent a new unit to exchange ours, and all turned out great!

  5. Richard Kline

    We could not be happier with this unit

    After 90 + days, we could not be happier with this unit. It’s a quieter, more efficient, significant upgrade from our old Whisperkool unit. It handles the wider range of external temperature exceptionally well and was really easy to install.

  6. Jordan Woods

    Have been using the Whisper cool 3000 for 15yrs. The 3500 is a much better engineered product and believe it does a far more efficient job of keeping our wines in a proper environment.

  7. John Litteri

    No Issues. Works wonderfully.

    This is a quiet unit. It functions flawlessly. It looks attractive.

  8. Robert B.

    So far we love it!

    Had one of the less expensive units but vented outside it just couldn’t perform in SoCal hot summers. This one seemed to do the trick with relative ease. Pretty easy to install and looks nice on both sides!

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