
CTM Marine CW-48HS 48000 BTU Soft Start Chiller
CTM Marine CW-48HS delivers 48,000 BTU soft-start chiller capacity for centralized cooling systems serving medium and larger vessel spaces.
- 48,000 BTU output handles larger zones.
- Soft start reduces startup current.
- Chiller supports centralized vessel cooling.
- CW-48HS identifies the configuration.
- Compatible distribution remains required.
Mid-sized yachts stepping up from a 36,000 BTU chiller without jumping straight to the largest CTM models find their match in the CW-48HS, delivering 48,000 BTU with a built-in soft start board and the same titanium coil, stainless steel construction found across CTM’s chiller lineup. It’s a direct drop-in replacement for the Dometic MCGX48 and TWCX48 chiller line.
The soft start board here does real work at this capacity — a 48,000 BTU compressor pulls meaningful inrush current on a standard start, and for boats running generator power or a limited shore connection, that reduced startup draw is often what keeps a breaker from tripping every time the compressor cycles on.
Why Choose the CTM CW-48HS
This is a genuinely useful middle option in CTM’s chiller lineup, backed by CTM’s standard 2-year warranty against material and workmanship defects. If you’re replacing a Dometic MCGX48 or TWCX48, the same DDC control board compatibility makes for a straightforward swap without rewiring existing cabin controls.
What to Know Before Installing
- Confirm your vessel’s electrical system is genuinely wired for single-phase 220V/230V power before ordering
- This chiller requires separately specified CTM AH-series air handlers distributed to each independent zone
- Ships via freight given the 150 lb weight; commercial delivery address required
- If replacing a Dometic MCGX48, TWCX48, or VARC48, this unit uses the same DDC control board for a straightforward swap
Product Specifications
Product Specifications
| Brand | CTM Marine |
|---|---|
| Full Model SKU/Code | CW-48HS-230V (CW Series Soft Start) |
| Country of Origin | USA |
| AC System Type | Central Chilled Water Marine Air Conditioning System (Single Stage Chiller) |
| Cooling Capacity | 48,000 BTU/h (14.07 kW / 4 Tons) |
| Heating Capacity | 48,000 BTU/h (Reverse Cycle Heat Pump Mode) |
| Refrigerant Type | R-410A Pre-Charged Eco-Friendly Gas |
| Compressor Technology | High-Efficiency Hermetic Scroll Compressor with Integrated Soft Start Microcontroller |
| Operating Voltage / Frequency | 230 Volts AC / 50 or 60 Hz Single Phase Platform |
| Full Load Amps / Running Current | Cooling Duty: 15.5 Amps / Heating Duty: 17.4 Amps at 230V Input Cycle |
| Locked Rotor Amps / Starting Current | 21.0 Amps LRA (Drastically reduced from 75+ LRA via dynamic step-up inrush current dampening) |
| Recommended Circuit Breaker Rating | 25 Amps Heavy-Duty Marine Breaker |
| Required Sea Water Flow Rate | 500 GPH / 31.5 Liters per minute minimum condenser loop |
| Sea Water Inlet/Outlet Size | 3/4" (19mm) Inner Diameter Hose Barb Connections |
| Chilled Water Loop Connections | 3/4" (19mm) FPT Freshwater Internal Loop Interface Ports |
| Condenser Coil Material | Corrosion-Resistant Cupronickel (CuNi 90/10) Coaxial Heat Exchanger Tube |
| Control Interface Connectivity | Digital Touchscreen Control Unit / Native NMEA 2000 Bus Integration Board Terminal |
| Dimensions (L x W x H) | 55.9 cm x 38.1 cm x 40.6 cm / 22.0" x 15.0" x 16.0" |
| Dry Weight | 56.7 kg / 125.0 lbs (Built on heavy-duty non-magnetic 316 marine stainless steel base chassis) |
| Standard Warranty | 2 Years Limited Commercial Fleet Protection |
| Application | Compact centralized water chilling systems for performance sport cruisers, sailing catamarans, and multi-cabin fishing vessels seeking quiet in-room air handling (36-52 ft boat lengths) |
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Free standard delivery to the United States, Canada and Australia.
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