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Mermaid M12 – Cool Only Marine A/C Unit 12,000 BTU’s 110V
Mermaid M12 Cool Only – 12,000 BTU (110V) utilizes a robust 4-stroke industrial cooling architecture specifically tuned for the North American market. This 12,000 BTU unit features a 304-grade stainless steel chassis and a heavy-duty rotary compressor, providing the mechanical simplicity and high-load durability required for mid-sized cabins where dedicated cooling and maximum moisture removal are the primary operational priorities.
- Thermal Output: 12,000 BTU/hr dedicated cooling only.
- System Layout: Robust stainless steel self-contained architecture.
- Power Requirements: 110V AC / 60Hz Single Phase.
- Vessel Integration: Recommended for 32–40 foot recreational motorboats.
- Warranty Coverage: Mermaid 5-year limited factory protection.
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Description
Mermaid M12 12,000 BTU – Professional cool only marine unit
Mermaid M12 delivers peak performance for USA coastal waters as a professional cool only marine unit. Engineered with a high-output rotary compressor, this 110V system provides rapid temperature reduction in humid tropical environments. The marine-grade construction features a heavy-duty stainless steel base to eliminate corrosion in the wetst areas of the bilge. Integrated fan speed controls allow for precise management of airflow and acoustic levels during overnight marina stays.
Mermaid M12 architecture provides a reliable Mermaid 12000 btu cooling unit for existing vessel configurations. The compact design ensures a seamless fit into standard sailboat lockers or under-seat storage compartments without extensive structural modifications. High-velocity blowers are balanced to reduce mechanical vibration and resonance throughout the fiberglass hull structure. Every unit is manufactured in the USA to meet strict ABYC standards for marine electrical safety.
Key Technical Specifications
- Mermaid M12 high capacity cooling.
- Professional cool only marine unit.
- Durable stainless steel mounting base.
- Powerful 12,000 BTU thermal output.
- Efficient 110V marine power draw.
- High velocity internal blower motor.
- Mermaid 12000 btu cooling unit.
- American made marine grade quality.
Mermaid M12 12,000 BTU (110V) Cool Only Specs
| Model Category | Self-Contained Unit |
| Cooling Capacity | 12,000 BTU/h |
| Voltage / Frequency | 110V | 60Hz |
| Running Current (Cool) | 9.5A (@110V) |
| Startup Current (LRA) | 42A |
| Base Pan Material | 304 Stainless Steel |
| Duct Size | 6" (152 mm) |
| Weight | 24.9 kg (55 lbs) |
Mermaid M12 12,000 BTU Cool Only Marine AC Guide
What makes the Mermaid M12 "Cool Only" model unique?
The Mermaid M12 is a 12,000 BTU marine air conditioner specifically designed for cooling and dehumidification without a reverse-cycle heating function. This makes it a cost-effective and simplified choice for boaters in tropical climates where heating is never required. Operating on 110V/115V, it provides powerful cooling for salons or staterooms up to 35 feet in length.
How do I install the Mermaid M12 ducting?
The Mermaid M12 requires a 5-inch or 6-inch diameter duct system to handle its high-volume air output. The unit should be installed in a centralized location with a short, direct duct run to maximize cooling efficiency. Ensure the return air grille is at least 120 square inches to allow the 12,000 BTU evaporator to pull sufficient air for optimal thermal exchange.
What is the maintenance schedule for Mermaid M12?
For the Mermaid M12, clean the air filter every month and inspect the sea water pump every 6 months. Since this unit is often used in warm, high-fouling waters, it is critical to keep the condenser coil free of barnacles and scale. Periodic flushing with a mild acidic descaler will maintain the 12,000 BTU cooling performance and extend the life of the cupronickel heat exchanger.
What are the electrical requirements for Mermaid M12?
The Mermaid M12 runs on standard 110V-115V AC power and requires a 20A circuit breaker for safe operation. While it does not have the complex NMEA 2000 electronics of some newer units, its simple analog-compatible controls make it rugged and easy to service globally. Always use a marine-grade shore power cord to prevent voltage fluctuations that could stress the compressor motor.
What is the footprint of the Mermaid M12?
The Mermaid M12 is known for its "narrow-base" design, allowing it to fit into slim locker spaces where wider units cannot go. It features a heavy-duty frame and a built-in condensate management system to prevent bilge moisture. Measure your installation site carefully, allowing for 3-4 inches of clearance around the blower and air intake for this 12,000 BTU cooling unit.
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