Quick Answer
For off-grid camping, the best portable AC is likely a DC-powered unit that can run directly from a battery bank, eliminating the need for an inverter. Look for a unit with a high SEER rating and a low power consumption. The EcoAir DC12 is a popular option.
Choosing the Right DC-Powered AC Unit
When selecting a portable AC for off-grid camping, consider the unit’s power consumption and cooling capacity. A high SEER (Seasonal Energy Efficiency Ratio) rating indicates a more efficient unit. For example, a 12,000 BTU unit with a SEER rating of 12 will consume less power than a similar unit with a lower SEER rating.
Solar Sizing for AC Power
To power a DC AC unit, you’ll need to size your solar array accordingly. A general rule of thumb is to size the array to produce 50-60% more power than the unit’s maximum power consumption. For example, a 12,000 BTU unit with a maximum power consumption of 1,200 watts would require a solar array that produces at least 1,800 watts.
Connecting Your DC AC Unit
To connect your DC AC unit to your battery bank, ensure that the unit’s DC input matches your battery bank’s output. Most DC AC units require a DC input voltage of 12 or 24 volts. Use a suitable DC-DC converter or a battery monitor to regulate the voltage and prevent damage to the unit.
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