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CellarPro 3400H-ECX Self-Contained Houdini Cooling Unit (up to 900 cubic feet)

Brand: CellarPro
Original price $4,595.00 - Original price $4,595.00
Original price
$4,595.00 - $4,595.00
Current price $4,595.00

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CellarPro 3400H-ECX Cooling Unit (P/N 35856). NOW WITH ENERGY-EFFICIENT EC FANS! CellarPro engineered the 3400H-ECX cooling unit specifically for shallow-depth glass wine cellars.

Just 13 inches deep and 14 1/2 inches tall, the 3400H-ECX Houdini cooling unit is designed to "disappear" inside - or atop - the cellar. Dual independent variable-speed fans offer flexibility to trade-off between super-quiet operation vs maximum performance.

For example, assuming 75F ambient temperature, R13 insulation in the non-glass walls, and no ducting, the 3400H-ECX would work in the following cellars:

Cellar Dims
Cu Ft

Glass Sq Ft

Glass Pane

13'w x 2 1/2'd x 9'h 293 117 (Front Wall) Single 60F 3460
15'w x 2 1/2'd x 10'h 375 150 (Front Wall) Double 55F 3308
15'w x 2 1/2'd x 10'h 375 200 (Front & Side Walls) Double 58F 3326


All air-cooled refrigeration equipment requires fresh air intake to dissipate the heat generated by the cooling unit. The fresh air intake CANNOT come from the wine cellar space - it must come from space outside the cellar.

Variable-speed fans with independent control provide maximum flexibility and versatility, as follows:

  • Variable fan speed for the cold side
    • Provides cooling flexibility
    • Low fan speed: 2737 BTUH @ 55F / 47F lowest achievable cellar temperature
    • High fan speed: 3492 BTUH @55F / 47F lowest achievable cellar temperature
  • Variable fan speed for the hot side
    • Choose between performance vs noise
    • Low fan speed: 56 dBA / 85F maximum intake temperature
    • High fan speed: 61 dBA / 95F maximum intake temperature

Powerful fans on the 3400H-ECX allow the cooling unit to be ducted without the need for an auxiliary fan, as follows:

  • Cold side:
    • Up to 100 equivalent feet (50' per duct) with 8-inch insulated ducting
    • Intake from the bottom, left, front, or top/exhaust from the bottom, front, or top
  • Hot side:
    • Up to 100 equivalent feet (50' per duct) and 85F maximum intake temperature (no auxiliary fan required)
    • Up to 200 equivalent feet (100' per duct) and 95F maximum intake temperature (requires auxiliary fan)
    • Intake from the right, front, or top/exhaust from the front, rear, or top
  • When ducting a Houdini cooling unit, our OEM duct hoods MUST be used, and the HIGH fan speed must be used
    • High fan speed is required for ducted airflows
    • CellarPro OEM duct hoods (sold separately) must be used to preserve the manufacturer's warranty

Houdini units now include a bottle probe as standard equipment, and should always be used as follows:

  • The probe must be located inside the cellar
  • We recommend using the probe filled with water and 10% rubbing alcohol to keep the water from developing mold
  • The bottle with the probe should be located in the top third of the cellar, in a central location with good airflow (ie not buried in the back nor in a corner)

Before purchasing this unit, let us calculate the thermal load of your wine cellar.


CellarPro's 3400H-ECX cooling unit (1/2 Ton Nominal) is designed specifically for glass-enclosed wine cellars and uses energy-efficient variable-speed EC fans for maximum performance. Features include:

  • Shallow height and depth
    • Fits shallow glass enclosures
    • 13"D x 14 1/2"H
    • 46"W
  • Can be placed inside the cellar, atop the cellar, partially installed in the cellar ceiling, or completely remote from the cellar (requires duct kit)
    • Choice of airflows for the cold side
      • Intake from the bottom, left, front, or top side
      • Exhaust from the bottom, front, or top side
      • Air deflector optional
    • Choice of airflows for hot side
      • Intake from the right, front, or top side
      • Exhaust from the front, rear, or top side
      • Air deflector optional
  • Energy-efficient variable-speed EC fans with independent controls - choose between performance vs noise
    • Hot side - higher ambient temps require high fan speed
      • Low fan speed: 56 dBA / 85F maximum intake temperature
      • High fan speed: 61 dBA / 95F maximum intake temperature
    • Cold side - higher cooling load requires high fan speed
      • Low fan speed: 2737 SENSIBLE BTUH @ 55F / 47F lowest achievable cellar temperature
      • High fan speed: 3492 SENSIBLE BTUH @55F / 47F lowest achievable cellar temperature on hot, cold, or both sides
  • Oversized stainless-steel drain pan with 200W heating element
    • Included as standard equipment
    • No drain line is required for properly constructed, airtight cellars
    • Optional overflow drain fitting and 8' flexible drain line
  • Choice of power source
    • Side or rear
    • Removable 10-ft cord
  • Bottle probe is included as standard equipment (except when the cooling unit is configured with a Networkable Thermostat upgrade, which is not compatible with the bottle probe)
  • Optional remote display

Please note:
If the cooling unit is partially or fully exposed to an environment outside the cellar, especially if the cooling unit will be located in an unconditioned or warm, humid environment, we recommend insulating the left 20-inches of the cooling unit with 1-inch closed-cell foam insulation (R-4 or better).

Our cooling units are designed to be used in properly-constructed wine cellars that are adequately insulated, airtight, and sealed with a vapor barrier. In improperly-constructed cellars, the cooling unit will create excess condensation, leading to damage and premature failure of your cooling unit (not covered by warranty).

  • Features energy-efficient EC Fans on both the cold and hot sides
  • This unit can be configured to pull fresh air ranging from -20 to 95F. If the unit's location does not provide sufficient room for the unit's exhaust to dissipate and/or for fresh air to be provided, you may need to purchase a rear duct kit. We recommend the addition of a fan cycling switch when fresh air intake will be below 20F.
  • The unit must be placed indoors in an area that is above 32F.
  • Dual high-output fans come with independent variable speed settings for your choice of maximum cooling power at the high fan speed or super-quiet operation (56 decibels) at the low fan speed.
  • Adjustable humidity control combines a high-output compressor with flexible fan cycles to maintain a recommended level of moisture inside your cellar.
  • Custom coils generate maximum cooling power inside the cellar.
  • Excess condensate is managed with a high-capacity stainless steel condensate pan and a 200W electric heating element.
  • Commercial-grade Electrofin coating protects the evaporator coils from leaks and corrosion.
  • The Intuitive LED display panel mounted on the evaporator with a digital programmable thermostat is simple and easy to use. A remote thermostat is available as an upgrade.
  • Energy-saver mode, quick-chill mode, and auto-defrost cycle provide convenient solutions to common cellar needs.
  • The temperature set point range is 47F to 62F when the cooling unit is properly sized.
  • The unit operates with minimal vibrations and less noise than comparable units from competitors.
  • Audible and visual alarms and maintenance-needed indicators protect the cooling unit and the wine cellar.
  • With dual power sources and a 10-foot power cord, the unit can be plugged into a receptacle from either the rear or right side of the cooling unit, providing flexibility for most installations.
  • A common dedicated 15-amp circuit is required to power the unit.
  • Mounting brackets, included as standard equipment, ensure easy installation.
  • A removable steel case provides access to the internal components for servicing and repair.
  • CellarPro's 5-Year Standard Warranty, the most thorough in the industry, protects the unit against manufacturing defects.
  • An optional Extended Warranty (P/N 31488) is available for additional protection.
  • ETL is Tested and Certified to rigorous UL Standards for safety.
  • CellarPro 3400H-ECX cooling units are self-contained, fully-charged units designed to be attached to the ceiling inside the cellar, or above the cellar.
  • 3400H-ECX units also can be located remotely from the cellar with the addition of one of our cold-side duct packages. Offered with or without insulated flex ducting, in a choice of configurations for low or high humidity conditions, our cold-side duct packages allow these cooling units to be ducted up to 50 equivalent feet away from the cellar and require 8-inch (or greater) ducting from start to finish.
  • When calculating equivalent feet, each 90-degree turn counts for 8 feet.
  • For remote or inaccessible installations, we offer a remote control display kit that is wired to the cooling unit and allows the digital display to be mounted inside or outside the cellar.
  • 3400H cooling units require fresh air intake without interference from the unit's hot air exhaust. If sufficient space does not exist to provide fresh air, you may need our hot-side duct kit.
  • The cold side of the cooling unit should never be exposed to temperatures below 32F.
  • A CellarPro cooling unit must always be used in the upright position, and should never be operated on its side or upside down.

Configuration Scenarios










Brand: CellarPro

UPC: 077757358562

Size: 46w x 13d x 14 1/2h (in)

115V AC / 60 Hz
Compressor Amps:
- Startup (LRA): 40.0 Amps
- Unit Amp Rating: 10.26 Amps
- Total Watts with Fans on High: 807
- Total Watts with Fans on Low: 791
- Compatible with Dedicated 15-Amp Circuit

BTUH @ 55F:
- Low Fan Speed: 2737BTUH
- High Fan Speed: 3492 BTUH
- 1/2 Ton Nominal

Options & Upgrades

Cold Temperature

  • Compressor Heater #1727: protects the unit when installed in environments that drop below 40F down to 20F.
  • Fan Cycling Switch #6972: supports the unit in temperatures below 20F and as low as -20F when combined with our compressor heater.

Duct Hoods

  • Hot Side Duct Hood#36026 and Kit #36027: allows you to install the unit in a small space with limited airflow, and duct the airflow up to 100 equivalent feet (50 feet per duct)
  • Hot Side Duct Kit w/ Inline Fan#36028: allows you to install the unit in a small space with limited airflow, and duct the airflow up to 200 equivalent feet (100 feet per duct)
  • Cold Side Duct Hood#36024 and Kit #36025: permits the cooling unit to be located remotely, up to 50 equivalent feet away from the cellar (cold side), and duct the airflow up to 100 equivalent feet (50 feet per duct)
  • Duct Kits are the same as Duct Hoods, and also include 2 x 25 feet of 8-inch insulated (R-6) flex ducting.

Filters & Grills

  • Use our filter & grill guide to find the cooling unit filter or duct filter and/or duct grill that is appropriate for your cooling unit.

Remote Control & Probe

  • Networkable Thermostat Upgrades #27346 and #27310: Allows connection of your cooling unit to a networkable, Wi-Fi-enabled thermostat (sold separately). Upgrades must be ordered at the same time that the cooling unit is ordered. Other limitations apply - read the networkable thermostat description for more information.
  • Ecobee SmartThermostat #31453 - compatible with our Networkable Thermostat Upgrade #27310
  • Remote Display #1603: lets you place the digital panel wherever you want, whether inside or outside the cellar. Includes 10 feet of wiring.
  • Bottle Probe #1434: this remote thermostat with a 10-foot cord overrides the thermostat on the face of the cooling unit, and allows it to monitor air or liquid temperatures at various locations inside the cellar. Included.
  • Bottle probe extension cords available in 25-foot (#1780) and 50-foot (#1781) lengths.

Other Options & Upgrades

  • Condensate Drain Line: strongly recommended for wine cellar installations that are not airtight, a drain line allows excess moisture to drain from the cooling unit (#1606).

Nobody protects your wine cellar better than CellarPro Cooling Systems! In the event, your cooling unit fails and the failed components are covered by our warranty, we'll send a replacement cooling unit to you per the terms of our Replacement Unit Program

CellarPro Replacement Unit Program
If your CellarPro cooling unit fails and the parts that failed are still covered by warranty, we'll send a replacement cooling unit to you, as follows:

  1. Your cooling unit must be registered at CellarPro
  2. Your cooling unit must have been properly sized, installed, and maintained
  3. Your cooling unit may not have been permanently modified, damaged, or disfigured

Please note:

  • Replacement units are factory-refurbished cooling units with a similar build date as your original unit
  • You are responsible for the shipping cost to send the replacement unit to you and return the original unit to us, and the cost (if any) to remove the original unit and install the replacement unit
  • In order to send a replacement unit, we require a deposit, which will be refunded minus shipping costs upon the return and pending the inspection of the original unit
  • If the original unit failed due to improper installation or use, the failure is not covered by warranty and we will deduct the cost of the repairs from the refund of your deposit

Customer Reviews

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This cooling unit can be classed as Self-Contained. It's a Through the Wall unit, so it sends exhaust fumes into an adjacent room.

Our range includes both Small and Large sized units.