WhisperKOOL Extreme 3500tiR Self-Contained Cooling Unit (w/ Remote)

Through-the-Wall Cooling System for Wine Cellars up to 800 cu. ft.

Standalone Overview

The WhisperKOOL Extreme 3500tiR is a self-contained, through-the-wall wine cellar cooling unit designed for fully insulated and sealed residential wine rooms up to 800 cubic feet. It can maintain a stable 55°F cellar temperature in environments where condenser intake temperatures reach up to 110°F, provided proper ventilation and insulation standards are met. This model includes a remote-mounted digital controller with bottle probe for precise liquid temperature monitoring.

Other sizes: WhisperKOOL Extreme 5000 tiR for 1250 cu.ft. wine cellar & WhisperKOOL Extreme 8000 tiR for 2000 cu.ft wine cellar.

Without KDT Plus Remote Controller and Thermostat: WhisperKOOL Extreme 3500ti Self-Contained Cooling Unit for 800 cu.ft, WhisperKOOL Extreme 5000ti Self-Contained Cooling Unit for 1250 cu.ft & WhisperKOOL Extreme 8000ti Self-Contained Cooling Unit for 2000 cu.ft wine cellar.

Who This Unit Is Designed For

Best For

• Residential wine cellars between 600–800 cu. ft.
• Fully insulated rooms with proper vapor barrier
• Exterior wall installations in warm climates
• Installations requiring remote temperature control
• Projects needing condenser-side ducting flexibility

Not Recommended For

• Cellars larger than 800 cu. ft.
• Glass-heavy or poorly insulated rooms
• Open-concept wine displays
• Mechanical spaces exceeding 110°F intake temperature
• Rooms without a proper vapor barrier

If your cellar exceeds 800 cu. ft., consider the Extreme 5000tiR.

Core Performance Features

Through-the-Wall Installation

The 3500tiR is engineered to fit between standard wall studs, allowing direct installation with minimal structural modification when framing is appropriate.

Variable-Speed Fan System

The 3-speed fan configuration improves air circulation and temperature stability under varying heat loads. This reduces short cycling and supports long-term system durability.

High-Temperature Tolerance

The unit is capable of maintaining a 55°F cellar temperature when condenser intake air reaches up to 110°F. This makes it suitable for installations in garages, mechanical rooms, and hot climate regions—provided adequate ventilation is available.

Remote Platinum Series Digital Controller

• 50-ft. communication cable
• External mounting capability
• Advanced System Protection alerts
• Bottle probe compatibility
• Precise digital temperature adjustment

Remote placement allows temperature monitoring without entering the cellar, reducing environmental disruption.

Liquid-Temperature Measuring Bottle Probe

Unlike ambient air sensors, the bottle probe measures actual liquid temperature. This produces more stable and accurate wine storage conditions.

Condenser-Side Ducting Capability

The condenser side can be ducted to redirect hot exhaust air when installation conditions require it.

Ducting components are sold separately. Maximum duct length and airflow resistance must comply with manufacturer specifications to prevent reduced performance.

Technical Specifications – Extreme 3500tiR

*Capacity assumes fully insulated walls and ceiling with proper vapor barrier and minimal glass exposure.

Manuals for WhisperKOOL Extreme 3500tiR Self-Contained:

• Owner's Manual for WhisperKOOL Extreme 3500tiR Self-Contained Cooling Unit (w/ Remote)
• Features & Specification Sheet for WhisperKOOL Extreme 3500tiR Self-Contained Cooling Unit (w/ Remote)
• Warranty Information for WhisperKOOL Extreme 3500tiR Self-Contained Cooling Unit (w/ Remote)
• 24V Thermostat Conversion Kit for WhisperKOOL Extreme 3500tiR Self-Contained Cooling Unit (w/ Remote)

What 3175 BTU Means in Real Terms

At 85°F condenser intake temperature, the 3500tiR delivers approximately 3175 BTU/h of cooling capacity.

This output is appropriate for a sealed 800 cu. ft. cellar with:

• Standard insulation levels
• Minimal glass surfaces
• Limited door cycling
• Controlled ambient conditions

Cellars with significant glass, stone, or high ceilings may require a higher-capacity unit.

Installation Requirements (Critical for Performance)

Proper installation is essential for system reliability.

Minimum recommendations:

• R-19 wall insulation
• R-30 ceiling insulation
• Vapor barrier on warm side of insulation
• Dedicated 20-amp electrical circuit
• Adequate condenser ventilation space
• Gravity drain slope or condensate pump

Failure to meet insulation and ventilation standards may prevent the system from reaching target temperature.

Exterior Wall Installation Guidance

When installing through an exterior wall:

• An exterior grille is strongly recommended to protect against weather exposure.
• Intake temperature must not exceed 110°F.
• Proper flashing and moisture protection must be implemented.

Optional 24V Thermostat Conversion

The 3500tiR supports a 24V thermostat conversion kit for integration with third-party smart thermostats.

Important:

• WhisperKOOL does not provide smart thermostats.
• The factory digital controller and bottle probe are removed when converting.
• Manufacturer support does not extend to third-party thermostat troubleshooting.

When to Consider a Larger Model

Upgrade to the Extreme 5000tiR if:

• Cellar exceeds 800 cu. ft.
• Significant glass exposure exists
• High ceiling height increases volume
• Ambient heat load is elevated

Heat load calculations are recommended prior to final unit selection.

WhisperKOOL Extreme tiR Series Review

 WhisperKOOL KDT Plus Controller Features & Benefits Explained

WhisperKOOL Extreme Series Power Options

Why WhisperKOOL Cooling Units Last Longer

Quieter, Smarter Cooling with WhisperKOOL Variable Speed Fan

WhisperKOOL Single Piece Mounting Bracket Installation Guide

WhisperKOOL 24V Thermostat Conversion Kit Features & Benefits

Final Summary

The WhisperKOOL Extreme 3500tiR is engineered for sealed, insulated residential wine cellars up to 800 cubic feet requiring reliable 55°F storage—even in warmer installation environments.

With variable-speed airflow, high-temperature tolerance, remote digital control, and condenser-side ducting flexibility, it is designed for installations where environmental control and reliability are critical.

For larger or glass-heavy cellars, consider stepping up to the Extreme 5000tiR.