CTM Marine CW-72HS 72000 BTU Soft Start Chiller

Description

The largest single-phase chiller in CTM’s CW lineup, the CW-72HS delivers 72,000 BTU with a built-in soft start board that reduces compressor startup current by 65-75% compared to standard locked-rotor amperage. This is a direct drop-in replacement for the Dometic MCGX72 chiller, sharing the same DDC control board architecture.

Soft start matters most at this capacity — a 72,000 BTU compressor pulls serious inrush current on a standard start, and for boats running on generator power or a limited shore connection, that surge can be the difference between a system that starts reliably and one that trips a breaker every cycle. The soft start board turns that hard requirement into a manageable one.

Key Features of the CTM CW-72HS Chiller

This unit brings the full CTM CW feature set to the largest capacity in the single-phase lineup, including the soft start technology that becomes especially valuable once compressor size crosses into serious inrush current territory.

• Built-in soft start board reduces startup current by 65-75% compared to the compressor’s locked-rotor amperage
• Direct drop-in replacement for Dometic MCGX72 chiller units, using the same DDC control board and controls
• Titanium condenser coil resists corrosion significantly better than copper in seawater applications
• Advanced MCC control board is a fully compatible replacement for the OEM DDC control board
• Corrosion-resistant metallic electrical box with effective grounding and EMI shielding

CTM CW-72HS Technical Specifications

These figures come from CTM’s official spec sheet for this listing, and the data here is internally consistent — no discrepancies found between the referenced part number and the specification table.

• Capacity: 72,000 BTU
• Voltage: 220V/230V
• Phase: Single phase (dual cycle compressor: 50Hz at 220V / 60Hz at 230V)
• Refrigerant: R410A
• Current Consumption (Cool/Heat): 23 A / 30 A
• Locked Rotor Amps: 42 A
• Fuse Max/Min: 90 A / 60 A
• Seawater In/Out: 3/4″ / 3/4″
• Chilled Water In/Out: 1.0″ / 1.0″
• Suggested Water Flow: 3,000 GPH
• Dimensions (W x D x H): 13″ x 20.2″ x 21″
• Net Weight: 167 lbs

Why Choose the CTM CW-72HS

This unit carries CTM’s standard 2-year warranty against material and workmanship defects. For boats running standard single-phase electrical systems with generator or limited shore power, the soft start board here provides real, measurable protection against nuisance breaker trips at startup.

What to Know Before Installing

• This chiller requires separately specified CTM AH-series air handlers distributed to each independent zone
• The dual-cycle compressor supports both 50Hz/220V and 60Hz/230V operation, useful if the boat may operate internationally
• Ships via freight given the 167 lb weight; commercial delivery address required
• If replacing a Dometic MCGX72, this unit uses the same DDC control board for a straightforward swap