EcoFlow Wave 2 Review: The Best Portable AC for Off-Grid Cooling

Portable air conditioning for camping and off-grid use used to be a pipe dream. The EcoFlow Wave 2 makes it a reality — a true compressor-based AC unit that runs on AC power, 12V DC, or its own add-on battery. And unlike the first Wave, this one heats too.

Key Specs at a Glance

• Cooling: 5,100 BTU
• Heating: 6,100 BTU
• Noise Level: 44 dB (lowest setting)
• Power Input: AC 100-240V, 12V/24V DC, or battery
• Battery: Optional 1,159Wh add-on ($500 extra)
• Weight: 30.9 lbs (unit only)

Who Is It For?

Campers in hot climates, RV owners wanting supplemental cooling, van lifers, and anyone who needs climate control where there’s no grid power. The heating mode also makes it useful for shoulder-season camping in spring and fall.

True Compressor Cooling

The Wave 2 uses a real compressor with R-290 refrigerant — this is not an evaporative cooler (swamp cooler). That means it works in humid climates where evaporative coolers fail. It can drop the air temperature by 15-25°F depending on the space size and ambient conditions.

In a 2-person tent, it takes the Wave 2 about 10-15 minutes to cool the space noticeably. In a small camper van, it can maintain a comfortable sleeping temperature through a warm night.

Multiple Power Options

This is where the Wave 2 really stands out:

• AC power: Plug into any outlet for unlimited runtime
• 12V/24V DC: Run from your vehicle or RV’s electrical system
• Add-on battery (1,159Wh): 1-8 hours fully cordless (depending on mode)
• Solar panels: Pair with EcoFlow panels for extended off-grid use

The add-on battery is sold separately (~$500) and is essential for truly off-grid camping. On Eco mode in moderate temperatures, we got about 5-6 hours of cooling from a full battery charge.

Heating Mode

The Wave 2 adds heating up to 6,100 BTU — a genuine advantage for spring and fall camping. We tested it in 45°F ambient temperatures and it kept a small tent comfortable through the night on battery power (about 4 hours in heating mode).

Noise Level

At 44 dB on the lowest fan speed, the Wave 2 is quiet enough for sleeping. It’s about the same volume as a quiet conversation or a library. On higher fan speeds, it’s louder (about 55 dB) but still manageable.

What It Can’t Do

The Wave 2’s 5,100 BTU is limited to small spaces:

• Tent (2-4 person): Excellent cooling ✓
• Small camper van: Good cooling ✓
• Large RV living area: Supplemental cooling only
• Room in a house: Too small — get a window unit

It’s a personal and small-space cooling solution, not a room AC replacement.

Price Reality

The Wave 2 unit alone is $1,099. Add the battery ($500) and you’re looking at $1,599+ for a fully portable off-grid AC setup. That’s a significant investment, but there’s genuinely no other product that does what this does — a battery-powered compressor AC with heating.

The Bottom Line

The EcoFlow Wave 2 is the best portable AC for off-grid and camping use. The combination of true compressor cooling, heating, and multiple power options (including battery) makes it uniquely versatile. It’s expensive and limited to small spaces, but if you camp in hot climates, it’s a genuine quality-of-life upgrade.

Best for: Hot-climate campers, van lifers, and RV owners who need truly portable, battery-powered climate control.