Dometic FreshJet 5 Series 15,000 BTU Mechanical Rooftop Air Conditioner – Black (FJX5557M)
Low-Profile | 115V AC / 12V DC | Cool-Only | Direct Replacement for Penguin II
The Dometic FreshJet 5 Series 15K BTU Mechanical Air Conditioner is a high-capacity, low-profile rooftop unit engineered for powerful cooling in a compact, aerodynamic package. Designed as a direct replacement for the Dometic Penguin II, this model offers quieter operation, enhanced vibration control, and improved durability — ideal for both new RV builds and retrofit installations.
Key Features
- 15,000 BTU Cooling Capacity – Efficiently cools large RV interiors
- Low-Profile Design – Sleek, aerodynamic look for reduced drag
- Cool-Only Operation – Mechanical controls (heat pump version sold separately)
- High-Efficiency Airflow – 350 CFM blower with powerful front and rear distribution
- Quiet Operation – Vibration-isolated compressor for reduced noise
- Durable Construction – Reinforced steel base and injection-molded shroud
- CSA Certified
- Legacy Dometic SKUs: 640316, 641916, 641816
Specifications
General
- Model: FJX5557M (Label: FJX5557MBKCS)
- SKU: 9620015927
- Color: Matte Black
- Weight: 95.26 lbs (Unit) / 106.28 lbs (Shipping)
Electrical
- AC Input: 115V AC / 60 Hz
- DC Input: 12V DC
Cooling Performance
- Cooling Capacity: 15,000 BTU
- Airflow: 350 CFM
- Thermostat Zones: Single or Multi-Zone Compatible
Dimensions
- Unit Dimensions: 40.40″ L × 29.22″ W × 11.10″ H
- Shipping Dimensions: 41.73″ L × 29.72″ W × 12.40″ H
Included in the Box
- Air Conditioner Unit
- Warranty Card
Installation Notes
This unit requires additional components for full installation:
For Non-Ducted Applications:
- FJXADBMWH – Manual Ceiling Controls
For Ducted Applications:
- 3317404.000 – For use with wall thermostat (sold separately)
Single Zone Control Kit (Cool/Furnace)
- 3316230.700 or 3316230.714
Before You Order
Confirm roof opening, ducted or non-ducted setup, control kit, 115V supply, and matte black finish against your RV before ordering.
Frequently Asked Questions
What capacity and electrical input are listed?
The source lists 15,000 BTU cooling, 115V AC at 60 Hz, and 12V DC input.
What controls are listed?
FJXADBMWH manual ceiling controls are listed for non-ducted use; ducted use lists kit 3317404.000 with a separately sold wall thermostat.
