Dometic FreshJet 5 Series 13.5K BTU Low-Profile RV Air Conditioner – Cool Only – Black (FJX5457MBKCS)
The Dometic FreshJet 5 FJX5457MBKCS is a 13,500 BTU rooftop air conditioner designed for efficient, powerful cooling in a low-profile footprint. Built as a direct replacement for legacy Dometic Penguin II units, the FreshJet 5 Series features enhanced airflow, improved noise reduction, and durable construction—making it ideal for both new RV builds and upgrades.
With a reinforced steel base, integrated vibration isolation, and high-impact polymer shroud, this model delivers reliable cooling performance and long-term durability. The mechanical version includes straightforward manual controls and is compatible with both ducted and non-ducted applications (air distribution box or ducted control kits sold separately).
Key Features:
- 13,500 BTU cooling capacity
- Low-profile aerodynamic design for reduced drag and quiet operation
- Mechanical control version – ideal for manual operation
- Vibration-isolated compressor for quieter performance
- Compatible with ducted and non-ducted setups
- High-capacity fan design with 350 CFM output
- Durable, injection-molded polypropylene shroud and base pan
- Easy replacement for Penguin II and other standard rooftop units
Specifications:
- Model: FJX5457MBKCS (Black Shroud, Mechanical Control)
- Cooling Only: Yes (no heat pump)
- Control Type: Mechanical (manual knobs)
- Voltage: 115V AC / 60 Hz
- Amperage: ~12-13 Amps cooling
- Airflow: 350 CFM
- Thermostat Zones: Single zone compatible
- Unit Dimensions: 40.4” L x 29.2” W x 11.1” H
- Net Weight: ~95 lbs
- Shroud Color: Black
Installation Notes:
- Non-Ducted Setup: Requires a FreshJet ADB (sold separately)
- Ducted Setup: Requires return air grille and control kit (sold separately)
- No controls pre-installed – allows you to select your preferred setup
Before You Order
Verify the black shroud, 115V supply, cooling-only configuration, and roof opening dimensions; also confirm whether your ducted or non-ducted installation needs the separately sold grille, controls, or ADB.
Frequently Asked Questions
Does this model provide heat pump operation?
No. The source specifies cooling only and says this model has no heat pump.
What additional parts are specified for installation?
For non-ducted setup, a FreshJet ADB is required and sold separately. Ducted setup requires a return air grille and control kit, also sold separately.
