Dometic | FreshJet 4 Series 15K BTU Air Conditioner w/ Heat Pump - White | 9610007815 | FJX4573EHPWHCS | Replaces Models: H551816, H551916 | R32 Refrigerant

The Dometic FreshJet 4 Series 15K BTU Air Conditioner with Heat Pump in White is a premium rooftop climate control solution engineered for modern RV applications requiring efficient cooling, quiet operation, and dependable all-season performance.

This model integrates advanced airflow engineering, a factory-installed hard start system, and next-generation R32 refrigerant technology to deliver faster cooling, quieter operation, and improved overall efficiency.

Built on Dometic’s latest FreshJet platform, this unit features a dual-motor design for enhanced air circulation, e-coated evaporator coils for long-term durability, and a lightweight aerodynamic housing optimized for both travel and thermal performance.

In addition to powerful cooling, the integrated heat pump provides efficient electric heating in mild weather conditions—reducing reliance on propane and extending usability across multiple seasons.

Key Components & Functional Description

1. Dual-Motor High-Airflow System

• Independent fan and blower motors for optimized air distribution
• Increased airflow output for faster cabin temperature reduction
• Improved circulation efficiency for more uniform cooling across RV interiors

2. Integrated Hard Start Compressor Assist

• Factory-installed hard start device improves compressor startup reliability
• Reduces peak electrical draw during startup cycles
• Minimizes breaker trips and supports generator or low-voltage operation

3. High-Efficiency R32 Refrigeration System

• Uses R32 refrigerant for improved thermal transfer efficiency
• Supports faster heat absorption and improved cooling performance

4. E-Coated Evaporator Coil Assembly

• Corrosion-resistant epoxy coating protects against moisture and airborne contaminants
• Extends operational lifespan in humid, coastal, or high-use environments
• Maintains high heat exchange efficiency over time

5. Advanced Condenser Coil Design

• Optimized fin geometry for improved heat dissipation
• Designed for high ambient temperature performance
• Works in tandem with dual-motor airflow system for balanced thermal management

6. Noise Reduction Engineering

• Aerodynamically tuned fan blade design reduces turbulence noise
• Compressor isolation mounts minimize vibration transfer
• Up to 10 dB quieter operation compared to previous-generation units
• Supports comfortable interior conversation levels during operation

7. Lightweight Black Low-Profile Housing

• Durable UV-resistant polymer construction in black finish
• Aerodynamic profile reduces wind resistance during travel
• Reinforced internal frame for structural stability and vibration resistance
• Modern aesthetic designed to match contemporary RV exteriors

Performance Highlights

• Rapid cooling response with enhanced airflow design
• Reliable compressor startup with integrated hard start system
• Reduced electrical strain in demanding RV power environments
• Quiet operation suitable for nighttime and continuous use
• Improved longevity through corrosion-resistant evaporator coatings
• Environmentally improved refrigerant system using R32

Technical Specifications

Cooling Capacity 15,000 BTU/hr
Electrical Requirements 115V AC RV standard
Refrigerant Type R32
Compressor Type High-efficiency rotary
Motor Configuration Dual-motor (fan + blower)
Noise Level Up to 10 dB quieter than prior generation
Airflow High-output optimized circulation system
Thermostat Compatibility Single-zone and multi-zone systems
Application Rooftop RV air conditioner

Dimensions & Weight

• Depth: 26 inches
• Width: 13.87 inches
• Height: 29.63 inches
• Weight: 77.09 lbs