Flagship FM18RLP – 18,000 BTU Marine Air Conditioner 115V Cool Only Low Profile
At 18,000 BTU, Flagship FM18RLP uses 115V power for cool-only marine air conditioning within low-profile installation spaces.
- 18,000 BTU output addresses larger spaces.
- 115V supply matches listed installations.
- Cool-only design does not heat.
- Low-profile housing limits vertical clearance.
- Marine unit provides dedicated cooling.
$2,291.90
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The 115V version of the Flagship FM18RLP Cool Only brings the same 11-inch low-profile, 18,000 BTU cooling platform to boats running standard US shore power, without the added electric heat components found in the Cool & Heat configuration — a simpler system for boats that don’t need onboard heating.
Why Choose the Flagship FM18RLP Cool Only (115V)
This is the standard US shore-power option for boats that want the simplicity of a cool-only system without stepping up to 230V. Current draw runs meaningfully higher than the 230V equivalent — 12.9A versus 6.4A — so it’s worth confirming your electrical panel has the capacity before committing to this configuration.
Because this unit has no heat function at all, it makes the most sense for boats in consistently warm climates. Owners who might need cabin heat even occasionally should look at the Cool & Heat version of the FM18RLP instead — same footprint, same installation requirements, just with the added 2.0kW electric heat capability.
What to Know Before Installing
- Made-to-order with a typical 5-6 day lead time before shipping
- Ships via LTL freight to a commercial address, not residential
- Confirm your panel can handle the 12.9A cooling draw at 115V
- An optional install kit is available separately from the unit itself
Product Specifications
Product Specifications
| Brand | Flagship Marine |
|---|---|
| Exact Model Code / SKU | FM18RLP (115V Cool Only) |
| Country of Origin | USA |
| System Architecture | Self-Contained Low-Profile Marine A/C System |
| Cooling Capacity - BTU/h | 18,000 BTU/h |
| Cooling Capacity - kW/Watts | 5.27 kW |
| Heating Capacity - BTU/h | 0 (Cool Only) |
| Reverse Cycle Heating Function | No |
| Electrical Voltage | 115V |
| Alternating Current Frequency | 60 Hz |
| Electrical Phase | Single Phase |
| Full Load Amps - FLA Cooling | 13.8 A |
| Locked Rotor Amps - LRA | 63 A |
| Max Circuit Breaker Size | 35 A |
| Refrigerant Type | R-410A |
| Compressor Type | Hermetic Rotary |
| Seawater Water Flow Rate | 4.16 GPM (250 GPH) |
| Seawater Inlet Pipe Size | 5/8 inch (16 mm) |
| Seawater Outlet Pipe Size | 5/8 inch (16 mm) |
| Evaporator Airflow Capacity | 550 CFM |
| Duct Discharge Connection Diameter | 6 inches (152 mm) |
| Condensate Drain Connection Size | 1/2 inch (12.7 mm) |
| Physical Dimensions - Unit | 12.0 x 21.0 x 15.0 inches (305 x 533 x 381 mm) |
| Net Weight | 71 lbs (32.2 kg) |
| Chassis & Condenser Material | Stainless Steel Frame & Cupronickel Condenser Coil |
| Standard Factory Warranty | 5 Years (Limited) |
| Application & Sizing Guidance | Low-profile, cool-only profile designed strictly for under-bench or tight cabinetry retrofits in tropical environments up to 1,000 cu.ft, min generator 4.5 kW. |
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