Ducted Split Air Handler 1.5 Ton AH18Sx-EC #34209

SKU: 34209 AH18Sx-EC
In Stock

Usually Ships w/i 3-5 Days

Shipping Information:

LTL Truck / Curbside

15,500 SENSIBLE BTUH @ 55F.
CellarPro's AH18Sx-EC split cooling system (1.5 Ton Nominal) is suitable for wine cellars up to 7000 cubic feet* in both commercial and residential wine cellars. The evaporator module features a powerful energy-efficient centrifugal EC fan that can handle ducting up to 0.30"wg external static pressure (equivalent to 14" diameter using R6 insulated flex ducting, or 153 sq. inches area using R6 insulated hard ducting.)

The system includes our Networkable Thermostat Upgrade (P/N 27346) which connects the unit to any 24V thermostat (not included) via 24V thermostat wiring, allowing control of the cooling unit through the Wi-Fi enabled thermostat.

The air-cooled condensing unit can be installed indoors or outdoors, and can handle ambient temperatures ranging from -30F to 110F. Please note that the condensing unit cannot be ducted and requires sufficient clearance for proper airflow - refer to the Owner's Manual for more information.

*7000 cubic feet size assumes that the cellar is constructed with insulation of R19 or better in all walls and ceiling (ie no glass or uninsulated concrete), a setpoint of 55F inside the cellar and ambient temperatures up to 85F outside the cellar. Ducting will add additional load and must be considered in the sizing calculation. Request a free thermal load calculation.

Please note: Our units were not designed for, and our warranty does not cover damage from, marine exposure (within 5 miles of the ocean). In these environments, you will need an applied coating, such as Insitu®, to protect outdoor components against corrosion that is common in coastal regions.

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).


  • Cold side exhaust is on the front and intake is on the right side.
  • The system requires either 208V/1PH/60HZ or 230V/1PH/60HZ dual power supplies, with a 15 amp circuit for the evaporator module, and a 50 amp dedicated circuit for the condensing unit. Either 208V or 230V must be specified when ordering the system.
  • 24VAC control wiring is required between the main temperature controller and the evaporator. No communication wiring is required between the evaporator and the condensing unit.
  • The system includes a refrigerant pump-down solenoid valve to prevent liquid slugging.
  • Units are evacuated and charged with dry nitrogen.
  • The Evaporator operating range is 45F to 62F cellar temperature without the Integrated Humidifier, and 51F.to 62F with the Integrated Humidifier
  • An optional integrated humidification system and an optional heating system are available for additional cost. These optoins must be factory installed and require additional power. Please consult the Owners Manual for specific power requirements.
  • The evaporator should never be exposed to temperatures below 32F.
  • The unit includes a mounted defrost controller that manages the defrost cycle, which is time initiated, temperature terminated with a factory default of 1 hour.
  • Access to the left and right side of the evaporator unit is required for installation and service.
  • Split systems must be installed and charged on site by qualified HVAC/R professionals. Line-set equivalent feet must be calculated in accordance with ASHRAE guidelines; refer to our Line Sizing Chart for more information.
  • CellarPro cooling units must always be used in the upright position, and should never be operated on its side or upside down. These units are shipped strapped to a pallet via common carrier with curbside delivery. Inside delivery is available for an additional charge.
  • To activate your warranty, you must complete and return our Installation Checklist.

CellarPro AH18Sx-EC Air Handler Cooling System (P/N 34209). Split Air Handler rated for indoor or exterior usage and designed for cellars up to 6000 cubic feet, this cooling system provides direct or ducted refrigeration specifically designed for wine cellars.

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.

Features include:

  • Now with energy-efficient EC Fans on the cold side
  • Evaporator features an aluminum body for light weight, corrosion resistance and aesthetics
  • Quick-release hardware simplifies internal access
  • Scroll compressor provides high-reliability, high efficiency and low noise
  • Insulated evaporator compartment provides maximum thermal efficiency.
  • A-frame evaporator construction increases cooling capacity and reduces power consumption.
  • Speed-optimized ECM blower motor in a draw-thru configuration provides even air distribution across the evaporator coils with 1300 CFM
  • Using 14" diameter R6 insulated flex ducting, the Evaporator can be ducted up to 100 equivalent feet (50 equivalent feet per duct)
  • Using R6 insulated hard ducting, the Evaporator can be ducted with maximum external static pressure of 0.3"wg and minimum cross sectional area of 153 sq inches.
  • Commercial-grade Electrofin coating protects the evaporator coils from leaks and corrosion.
  • Stainless steel condensate pan and condensate safety switch protects against condensate overflow
  • Low RPM minimizes air noise and motor HP consumption
  • Evaporator blower assembly is mounted to an internal chamber to further reduce noise
  • Includes Class 2, 24VAC control circuit with all necessary contactors, fuses and/or circuit breakers
  • Compatible with WiFi-enabled 24V Thermostats (sold separately) to control and display cellar temperature
  • Optional integrated humidity module includes a Digital IAQ Humidistat that allows the cellar humidity to be set from 5% to 70% in 5% increments
  • Optional integrated heating system provides heating instead of cooling when cellar temperatures drop below the setpoint.
  • Air cooled condensing unit enclosure suitable for indoor or outdoor installations
  • The Evaporator and Condensing Unit are factory-pressurized and shipped with dry nitrogen to ensure leak-free installation.
  • CellarPro's 2-Year/5-Year Warranty, the most thorough in the industry, provides 2 years' coverage on parts (labor is not included) and 5 years on the compressor .
  • An optional Extended Warranty (P/N 31489) is available for additional protection.
  • ETL Tested and Certified to rigorous UL Standards for safety.

Brand: CellarPro

UPC: 077757011153

Condensing Unit Dimensions:
- 219 lbs (no humidifier)
- 16 5/8w x 40 1/2d x 33 1/8h

Evaporator Unit Dimensions:
- 156 lbs
- Add 5 lbs for Integrated Heater and 20lbs for Integrated Humidifier
- 41 3/8w x 36 5/8d x 22 3/8h

208V/1PH/60HZ or 230V/1PH/60HZ (must be specified when ordering) with dual power supplies:

  • 15-amp circuit for the evaporator module
  • 40-amp dedicated circuit for the condensing unit
  • Startup: 75.0 Amps
  • Total Watts: 2177 (not including optional Integrated Humidifier or Heater)

BTUH @ 55F: 15500 / 1.5 Ton Nominal

Evaporator Decibels
- Ducted: 67 dbA
- Non-Ducted: 78 dbA

Condensing Unit Decibels
- 61 dbA

Sizing Table: Click here to view sizing table

Warranty Resources
- Warranty Overview
- Limited Warranty - 2 Years (Entire System)
- To activate your warranty, you must complete and return our Split Installation Checklist.
- Optional Extended Warranty sold separately.

Click on one of the following links for more information:

Cold Temperature

  • Compressor Heater: protects the unit when installed in environments that drop below 40F down to 20F - Included as standard equipment.
  • Fan Cycling Switch: supports the unit in temperatures below 20F and as low as -20F when configured with Electronic Control and combined with our compressor heater. Included as standard equipment

Remote Thermostats, Displays & Probes

  • Networkable Thermostats #27346 and #27310: Included as standard equipment allowing connection of your cooling unit to a networkable, Wi-Fi enabled thermostat (sold separately, Ecobee SmartThermostat Pro #31453). Must be ordered at the same time that the equipment is ordered. Other limitations apply - read the networkable thermostat description for more information.

Heating & Humidification

  • Integrated Heater #32034: adds 3000 watts of heat through the cooling system when the cellar is in an unheated environment and will be exposed to temperatures below desired wine storage temperatures.
  • Integrated Humidifier #32035: provides humidification with digital control inside the cellar when attached to an external water line.

Condensate Pump

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

What is "Sensible BTUH"?

A: You should always use Sensible BTUH* when comparing different brands of cooling units, and when sizing a cooling unit for your wine cellar. Every cooling unit produces a certain amount of Total BTUH, which is the sum of Sensible BTUH (lowers the temperature) and Latent BTUH (lowers the relative humidity). Because our goal is to cool wine cellars while preserving humidity, wine cellar cooling units should have high Sensible BTUH and low Latent BTUH. The relationship between Sensible and Latent BTUHs is know as SHR (Sensible Heat Ratio), which is calculated as Sensible BTUH/Total BTUH. The SHR for CellarPro cooling units is greater than 90%, which means that CellarPro units provide maximum cooling power without stripping out humidity from the cellar environment.

*CellarPro Sensible BTUHs are calculated assuming 55F cellar temperature, 60% relative humidity and 95F ambient for all units except 1800 units (85F ambient).

What's the difference between a split system and "through the wall" or "self-contained" systems?

A: Split systems are "split" into two parts: the cold side (evaporator) which usually is installed inside the cellar, and the hot side (condensing unit) which is installed away from the cellar. The benefit of having this split is that the heat and noise from the condensing unit can be located far away from living spaces where it won't interfere with day-to-day life.

Are split systems more difficult to install than self-contained systems?

A: Yes. Split systems require installation by a licensed HVAC technician, whereas a self-contained unit can be mounted through-the-wall and is shipped fully charged and operational out of the box.

Can I install the entire unit inside the cellar?

A: No, the condensing unit must be located outside the cellar.

If I don't have sufficient space around the condensing unit, is that Ok?

A: The condensing unit generates hot air that must have sufficient space to dissipate, otherwise the unit will recycle its own hot air. The condensing unit comes equipped for an ambient temperature range of -30F to 110F and is suitable for both indoor and outdoor installations. Refer to the owners manual for required clearances around the condensing unit. The condensing unit cannot be ducted. If installed indoors, the space must have adequate ventilation to ensure the supply air temperature does not exceed 110F.

Does the evaporator include flare connections, or will I need to braze the connections to the line-set?

A: Flare connections are much more prone to leaks, and have been phased out over the years, replaced by fully-brazed connections. This is driven by the EPA and the focus on minimizing refrigerant leaks into the atmosphere.

Does the unit really need a dedicated circuit?

A: First, the background. Unlike our competitors, we build our cooling units with precision expansion valves, not cap tubes, which means that our cooling units aren't limited to a 30F differential between the desired cellar temperature and the ambient temperature. Cooling systems with expansion valves are much more precise than cap tubes, and much more sensitive to low voltage conditions, which is why our units require dedicated circuits. When we say "dedicated circuit", we mean that the circuit shouldn't have any items that require heavy draws of electricity - eg other appliances, vacuum cleaners, big-screen TVs, blow-dryers - on the same circuit as the cooling unit. Lighting, computers or other low-draw items shouldn't be a problem on the same circuit.

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