If you're considering solar power to run air conditioning in your RV, you're in the right place! In this detailed breakdown, I'll share my real-world test results using an LG dual inverter window A/C unit powered by solar panels and LiFePO4 batteries in my 18-foot RV.
Understanding the Key Factors for RV Solar A/C Performance
The efficiency of your solar-powered air conditioning system depends on several important factors:
- Type and Efficiency of A/C Unit: Choosing a high-efficiency air conditioner is crucial.
- Occupancy: The number of people inside the RV affects cooling demand.
- Outdoor Temperature: Hot weather increases the workload on your A/C.
- RV Size: Larger RVs require more energy to cool down.
Scenario 1: Solo RV Living
When I'm traveling alone in my 18-foot aluminum-sided RV on warm days (around 85°F), I rely on a 6,000 BTU LG dual inverter window A/C unit. This unit is known for its high efficiency and low power draw, making it perfect for solar setups. My power system includes:
- 500 watts of solar panels
- 300Ah of LiFePO4 battery storage
With this system, I can run the A/C for approximately 4 to 5 days on sunny days. If the weather turns cloudy, I can still enjoy cooling for about 1.5 days before needing to recharge the batteries.
Scenario 2: Family RV Adventures
When the whole family joins me—two adults, two kids, and a dog—cooling needs change significantly. The additional body heat in a small RV increases cooling demands. To accommodate this, I upgraded my power setup to:
- 700 watts of solar panels
- 600Ah of battery capacity
Even with the same LG dual inverter A/C unit and 18-foot travel trailer, this enhanced setup allows us to maintain similar performance. We can enjoy several days of comfortable cooling, provided the sun is shining.
Optimizing A/C Settings for Efficiency
For both scenarios, I set the A/C thermostat to around 82°F during peak heat hours (11 AM to 5 PM) and 72°F during the cooler times. This strategy prevents the RV from getting too hot during the hours I am outside, but still comfortable to go inside when I need to. We usually spend those hot hours outside, so we don't need the A/C running at full blast.
More Than Just Cooling: Enjoying RV Life Off-Grid
Even with the A/C running, we can charge our tablets, watch TV, and carry out most of our daily activities without any hiccups—day and night. If you're exploring options for solar-powered A/C for your RV, I hope this guide sets you on the right path. With the right equipment and planning, staying cool off-grid during summer heat is achievable without breaking the bank!
Equipment: