Dometic FreshJet 5 Low-Profile RV AC | 13.5K BTU | Black | Mechanical

Replace your Penguin with efficient rooftop cooling from the Dometic FreshJet 5 Low-Profile RV Air Conditioner — Black (Part #FJX5457MBKCS / SKU 9620015930). Mechanical 13,500 BTU low-profile AC engineered as a direct Penguin replacement — same 10.5" installed height, quieter operation, reinforced steel base, and improved airflow. Cooling-only mechanical model for ducted or non-ducted installations.

Prefer White Instead?

Also available in white as the Dometic FreshJet 5 Low-Profile RV AC — White (FJX5457MWHCS). Same construction and features — white finish for traditional exterior color schemes.

Need More Cooling? See the 15K BTU Variant

For higher cooling capacity in the same low-profile mechanical platform, see the Dometic FreshJet 5 15K BTU — Black (FJX5557MBKCS).

⭐ Up to $150 Dometic Rebate (April 1 - August 31)

This unit qualifies for up to a $150 rebate from Dometic when purchased between April 1 and August 31. See Dometic rebate submission guidelines for complete details.

⭐ Direct Penguin Replacement — Same Height and Footprint

The FreshJet 5 is engineered as a drop-in replacement for the Dometic Penguin — both Penguin I and Penguin II:

• Same 10.5" low-profile installed height as the Penguin
• Same mounting footprint
• No roof modifications required

All rooftop air conditioners use the same roof opening, and every Penguin shares the same low-profile footprint as the FreshJet 5. This is the specifically-engineered path to modernize a Penguin installation without cutting sheet metal or adjusting the roof envelope.

Also Replaces These Legacy Dometic Models

• 640315
• 64195
• 641815
• 641835

⚠️ Mechanical Cooling-Only Model

This FreshJet 5 is the mechanical cooling-only variant — no integrated heat pump. If you need integrated electric heating, consider the FreshJet 5 with Heat Pump variants instead. Additionally, being mechanical means it requires external control (thermostat and control kit sold separately, or reuse existing).

Compatible Control Components

Verified compatibility with these control components:

• Control Kits: Dometic 3316230.700 (white), Dometic 3316230.714 (black)
• Control Boxes: Dometic 3312020.000, Dometic 9610005382
• Keeping a CCC 5-button multi-zone thermostat? Use the Dometic CCC Multizone Control Kit 3109226.005 — this is what lets this unit run on an existing CCC 5-button thermostat, including alongside a legacy unit on the same multi-zone system. CCC only, not CCC2.

May Work with Existing Controls

Depending on your existing installation, this AC may work with your current controls — no full control system replacement necessarily required. If existing controls also need replacement, we carry compatible options. Chat or call for guidance if you need help.

⭐ Up to 9dB Quieter (Cabin Noise Reduction)

Upgraded motor and blower system: up to 9dB reduction in cabin noise. Meaningful improvement over legacy Penguin noise levels.

13,500 BTU Rooftop Cooling

• 13,500 BTU cooling capacity
• Reinforced steel base for long-term durability
• Built-in hard start for dependable startup performance
• Improved airflow performance vs legacy Penguin units

⭐ Built-In Hard Start

Standout reliability feature: built-in hard start improves startup performance and reduces the chance of tripping breakers when multiple appliances start simultaneously. Meaningful for RVs on 30-amp service or generator power.

Low-Profile 10.5" Height

Low-profile design gives improved roof clearance for low-clearance parking, garage storage, or driveway constraints — plus a more modern coach silhouette.

Ducted OR Non-Ducted Installation

Versatile installation flexibility — works with both ducted and non-ducted systems.

⭐ Pre-Installed Roof Compression Gasket

Comes with a pre-installed roof compression gasket on the base of the unit. This gasket provides the proper seal between the AC and RV roof — no additional sealant or roof gasket required. Simplifies installation and reduces the risk of installer-caused leaks.

Companion Components — Air Distribution Box + Thermostat

You may need to replace the air distribution box and/or thermostat control kit at the same time. We carry compatible options — chat or call for guidance if you need help selecting the right components.

⭐ SHIPS FREE via Freight to the 48 States

Free freight shipping to the 48 contiguous states. This typically arrives within a week.

⚠️ Freight Shipping Note

This is a large-format freight item. Because of the shipping method, this item may not be eligible for standard return processing — inspect thoroughly upon delivery and note any damage on the delivery receipt before signing.

Cross-Reference Part Numbers

• Manufacturer Part: FJX5457MBKCS
• SKU: 9620015930
• Legacy SKUs Replaced: 640315, 64195, 641815, 641835

Black Finish

⚠️ Professional Installation Required

Installation involves rooftop mounting, weather sealing, 120V AC electrical wiring, and thermostat integration. Installation should be performed by a qualified RV service technician.

2-Year Manufacturer Warranty

Genuine Dometic OEM

Key Features

• Genuine Dometic OEM FreshJet 5 low-profile rooftop AC
• Part number: FJX5457MBKCS (SKU 9620015930)
• Direct low-profile replacement for the Dometic Penguin (I and II) — same 10.5" height and mounting footprint
• 13,500 BTU cooling capacity
• Mechanical cooling-only — no heat pump (external control required)
• May work with existing controls
• Compatible control kits: Dometic 3316230.700, 3316230.714
• Compatible control boxes: Dometic 3312020.000, 9610005382, and 3109226.005 for CCC 5-button multi-zone thermostats
• White color sibling available: FJX5457MWHCS
• Up to 9dB cabin noise reduction
• Reinforced steel base for durability
• Built-in hard start — improved startup reliability, fewer breaker trips
• Improved airflow vs legacy Penguin units
• Low-profile 10.5" height — better roof clearance
• Ducted OR non-ducted installation
• Pre-installed roof compression gasket — no additional sealant needed
• Legacy SKUs replaced: 640315, 64195, 641815, 641835
• Black finish
• SHIPS FREE via freight to 48 states — typically arrives within a week
• Qualifies for up to $150 Dometic rebate (April 1 - August 31)
• Backed by 2-year manufacturer warranty

Specifications

• Brand: Dometic
• Series: FreshJet 5
• Part Number: FJX5457MBKCS
• SKU: 9620015930
• Legacy SKUs: 640315, 64195, 641815, 641835
• Type: RV Rooftop Air Conditioner (Low-Profile, Mechanical)
• Cooling Capacity: 13,500 BTU
• Heat Pump: No (cooling only)
• Control Type: Mechanical (external control required)
• Compatible Control Kits: Dometic 3316230.700 (white), 3316230.714 (black)
• Compatible Control Boxes: Dometic 3312020.000, 9610005382, 3109226.005 (CCC 5-button multi-zone)
• Hard Start: Built-in
• Configuration: Ducted OR Non-Ducted
• Installed Height: 10.5" (matches Penguin)
• Mounting Footprint: Matches Penguin
• Direct Replaces: Dometic Penguin I and Penguin II
• Noise Reduction: Up to 9dB cabin noise reduction
• Base Construction: Reinforced steel
• Roof Compression Gasket: Pre-installed
• Color: Black
• White Color Sibling: Dometic FJX5457MWHCS
• Shipping: Ships FREE via freight to 48 states (typically arrives within a week)
• Rebate: Up to $150 from Dometic (April 1 - August 31)
• Warranty: 2-year manufacturer warranty