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Webasto S20 – BlueCool S Series 230V 20,000 BTU Marine Air Conditioner
The Webasto S20 provides 20,000 BTU marine air conditioning through 230V power for onboard climate control across vessel interiors.
- 20,000 BTU output handles larger cabins.
- 230V supply matches listed electrical systems.
- Marine air conditioner supports interior cooling.
- BlueCool S Series identifies the platform.
- Capacity guides vessel system selection.
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Description
Master staterooms and grand salons often need balanced cooling and heating from one self-contained marine system. The Webasto BlueCool S20 provides 20,000 BTU/h of cooling and 20,000 BTU/h of reverse-cycle heating at 230V. Its 5.86 kW cooling capacity and application guidance for spaces up to 1,000 cubic feet suit expansive yacht interior layouts.
Key Features
- Provides 20,000 BTU/h cooling for larger yacht interior spaces.
- Adds 20,000 BTU/h reverse-cycle heating for seasonal conditions.
- Operates on 230V power across 50 or 60 hertz systems.
- Delivers 470 CFM airflow through a six-inch duct connection.
- Uses 350 GPH seawater flow for marine heat exchange.
- Supports expansive layouts through self-contained marine air-conditioning architecture.
Technical Specifications
- Model: BlueCool S20, 230V Variant
- Cooling capacity: 20,000 BTU/h or 5.86 kW
- Heating capacity: 20,000 BTU/h with reverse-cycle heating
- Electrical supply: 230V, 50/60 Hz, single phase
- Operating current: 6.5 A cooling and 7.4 A heating
- Breaker requirement: 25 A maximum with 34 A LRA
- Refrigerant and compressor: R-410A with scroll or rotary compressor
- Seawater flow: 5.83 GPM or 350 GPH
- Air discharge: 470 CFM through a six-inch duct
- Dimensions and weight: 14.2 x 20.5 x 15.0 inches; 77.2 lbs
Application and Installation Notes
The BlueCool S20 is engineered for expansive master staterooms or grand salon environments up to 1,000 cubic feet. Verify the vessel’s 230V supply, 25 A maximum breaker, and minimum 4.5 kW generator capacity before installation. The 14.2 x 20.5 x 15.0-inch unit requires suitable clearance, six-inch ducting, half-inch condensate drainage, five-eighth-inch seawater plumbing, and 350 GPH water flow.
Who This Unit Is Not Ideal For
This model is not suitable for 115V-only systems, small cabins, or applications where 20,000 BTU/h exceeds the required cooling capacity. Its size, weight, seawater flow, and electrical requirements should be reviewed against the available installation space.
Warranty and Product Summary
The Webasto BlueCool S20 includes a 2-year factory warranty. Manufactured by Webasto in Germany, it provides 230V cooling and reverse-cycle heating with 470 CFM airflow for compatible larger yacht interiors.
| Brand | Webasto |
| Exact Model Code / SKU | BlueCool S20 (230V Variant) |
| Country of Origin | Germany |
| System Architecture | Self-Contained Marine A/C System |
| Cooling Capacity - BTU/h | 20,000 BTU/h |
| Cooling Capacity - kW/Watts | 5.86 kW |
| Heating Capacity - BTU/h | 20,000 BTU/h |
| Reverse Cycle Heating Function | Yes |
| Electrical Voltage | 230V |
| Alternating Current Frequency | 50/60 Hz |
| Electrical Phase | Single Phase |
| Full Load Amps - FLA Cooling | 6.5 A |
| Full Load Amps - FLA Heating | 7.4 A |
| Locked Rotor Amps - LRA | 34 A |
| Max Circuit Breaker Size | 25 A |
| Refrigerant Type | R-410A |
| Compressor Type | Hermetic Scroll / Heavy-Duty Rotary |
| Seawater Water Flow Rate | 5.83 GPM (350 GPH) |
| Seawater Inlet Pipe Size | 5/8 inch (16 mm) |
| Seawater Outlet Pipe Size | 5/8 inch (16 mm) |
| Evaporator Airflow Capacity | 470 CFM (800 m³/h) |
| Duct Discharge Connection Diameter | 6 inches (152 mm) |
| Condensate Drain Connection Size | 1/2 inch (12.7 mm) |
| Physical Dimensions - Unit | 14.2 x 20.5 x 15.0 inches (360 x 520 x 380 mm) |
| Net Weight | 77.2 lbs (35.0 kg) |
| Chassis & Condenser Material | Extra-Deep Composite Condensate Tray & Cupronickel Condenser Coil |
| Standard Factory Warranty | 2 Years |
| Application & Sizing Guidance | High-capacity premium self-contained layout engineered for expansive master staterooms or grand salon environments up to 1,000 cu.ft, min generator 4.5 kW. |
What's in the Box
- 1x Webasto BlueCool S-Series S20 20,000 BTU Self-Contained Marine Air Conditioner Unit (230V)
- 1x High-Velocity Hermetic Scroll Compressor
- 1x Extra-Quiet 360-Degree Rotatable Centrifugal Blower Assembly
- 1x High-Efficiency Corrosion-Proof Titanium Condenser Coil
- 1x Composite Deep-Draw Condensate Drain Pan with ABS Tray
- 1x Next-Generation BlueCool Electronic Control Board
- 1x Removable and Washable Return Air Filter
- 1x User Manual and Technical Specification Guide
Webasto S20 Marine AC FAQ
What are the electrical requirements for S20?
Webasto S20 operates safely on a 230V power supply. This single-phase network installation draws minimal running current, allowing long-distance coastal cruisers to distribute climate loads smoothly over international shore lines or standard diesel generator panels without throwing primary distribution breakers during high-load summer periods.
What airflow volume does this system deliver?
Webasto S20 generates an airflow volume of 465 CFM. The integrated rotatable high-velocity centrifugal blower fan operates dynamically to flush hot humidity profiles from cramped living spaces while keeping system resonance decibels extremely low against lightweight composite structural hull partitions and marine plywood cabin walls.
Which vessels fit the Webasto S20?
Webasto S20 is designed for mid-sized cabins and crew quarters. It provides optimal cooling coverage for sailboats and motor yachts ranging from thirty-five to forty-five feet, delivering efficient climate regulation underneath bunk spaces or within designated cockpit lockers without taking up crucial living space.
| System Attribute | Factory Value |
|---|---|
| Thermal Output | 20,000 BTU |
| Net Weight | 81.6 lbs |
| Duct Size | 6 inches |
| Inlet Connection | 5/8 inch |
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