When upgrading an RV’s air conditioning, two common options are mini split systems or modern high-efficiency rooftop RV units. Both have advantages, but the right choice depends on efficiency, reliability, and how the RV will be used.
High-Efficiency Rooftop RV AC
Rooftop units are the traditional RV solution. Modern inverter-driven models, such as the Dometic RTX, Furrion Chill Cube, and OutEquipPro, are quieter, draw less power, and are designed specifically for the mobile environment. Read more about these A/Cs here.
Pros
Purpose-built for RV vibration and movement
Lower upfront cost compared to mini splits
Easy installation and service access
Works well with generator or shore power
Comparable efficiency to mini splits
Cons
Limited zoning options
Slightly higher power draw than the most efficient residential systems
Mini Split Systems
Mini splits are popular in homes for their efficiency and quiet operation, but installing them in an RV adds cost and complexity. They require long runs of copper refrigerant tubing between the evaporator and condenser, which are more susceptible to cracking or leaks due to RV flexing.
Pros
High efficiency in stationary applications
Quiet operation
Excellent temperature control
Cons
More complex installation
Higher upfront cost
Tubing and connections are vulnerable to RV movement
Service can be difficult on the road
Efficiency Comparison
In the past, mini splits offered a significant efficiency advantage over rooftop units. That gap has largely closed with the latest generation of inverter-driven rooftop ACs. High-efficiency rooftop units like the Dometic RTX, Furrion Chill Cube, and OutEquipPro now match the efficiency of mini splits while being engineered to withstand the stresses of mobile use.
Our Conclusion
We believe mini splits add cost and installation complexity without providing a meaningful efficiency advantage in most RVs. Modern inverter-driven rooftop ACs deliver comparable efficiency, are built to survive the rigors of RV life, and avoid the reliability risks of long copper refrigerant runs.
For most RV owners, a high-efficiency rooftop AC is the best combination of efficiency, durability, and serviceability for off-grid or on-grid travel.
Article Written by Kyle Lemmon
Momentum Upfitters - Salt Lake City