Quick answer
The EcoFlow Wave 2 is a portable, sealed air conditioner and heater (5,100 BTU cooling, 6,100 BTU heating) that EcoFlow discontinued in July 2026 in favor of the Wave 3 — which is why it’s now clearance-priced around $599, down from its original $1,299 MSRP, according to retailer listings. It has no built-in battery: it runs on wall or 12V car power, and cordless operation needs a separate $349 add-on battery pack rated for only roughly 500-800 charge cycles, since that pack uses older NMC lithium chemistry rather than the LiFePO4 EcoFlow now ships in the Wave 3’s battery. At clearance price it’s a legitimate deal for tent, van, or car use — just don’t expect the same battery durability as EcoFlow’s LiFePO4 power stations.
We’ve covered the LiFePO4 vs. lithium-ion chemistry gap before on this site, and the same naming trap we found with the Jackery Explorer 500 — an older, discontinued unit still selling alongside its replacement — applies here. The Wave 2 isn’t a power station itself, but it’s built by the same company behind the EcoFlow Delta 2 and pairs directly with EcoFlow’s stations for off-grid cooling, which is why campers and van-lifers researching power stations keep running into it.
At a glance
| Spec | EcoFlow Wave 2 |
|---|---|
| Cooling capacity | 5,100 BTU |
| Heating capacity | 5,100 BTU |
| Built-in battery | None — AC/12V powered |
| Add-on battery (optional) | 1,159Wh, NMC chemistry, ~$349 |
| Add-on battery cycle life | ~500-800 cycles |
| Cordless runtime (with add-on) | Up to ~8 hours (cooling) |
| Weight | ~32 lb (14.5 kg) |
| Noise level | 44-56 dB |
| Refrigerant | R290 (natural) |
| Status | Discontinued (July 2026) — replaced by Wave 3 |
| Price | ~$599 (unit), ~$948 (with add-on battery) |
| Rating | ★★★☆☆ (3.5/5) |
What we like
- Real clearance pricing, not a fake sale. EcoFlow’s own site now redirects Wave 2 purchase links to the Wave 3, confirming the unit is genuinely discontinued rather than just marked down — the drop from $1,299 MSRP to around $599 is the kind of end-of-life discount worth taking advantage of if the specs fit your use case.
- Sealed, installation-free design. No exhaust hose, no window bracket, no permanent mounting — it drops into a tent, van, or car and runs, which is the entire appeal versus a standard portable AC that assumes a window or wall vent.
- Works with EcoFlow’s existing power station lineup. Pair it via DC port with a station like the EcoFlow Delta 2 Max and reviewers report 12-14 hours of cooling runtime — far beyond the roughly 8 hours the dedicated add-on battery provides alone.
- R290 natural refrigerant. A lower-global-warming-potential refrigerant than older R410A-based units, and increasingly the industry standard for new portable AC designs.
Where it falls short
- No built-in battery, and the add-on battery uses older NMC chemistry. At roughly 500-800 cycles to 80% capacity, that’s a fraction of the 3,000+ cycles LiFePO4 packs like the ones in EcoFlow’s own River 3 deliver — the same NMC-vs-LiFePO4 durability gap we documented in our lithium chemistry guide, just showing up on an AC unit instead of a power station.
- Discontinued means shrinking support and stock. Once retailer clearance stock sells through, replacement parts and the add-on battery itself may become harder to find — a real consideration for anyone planning to keep the unit for years.
- 5,100 BTU is the smaller of EcoFlow’s two Wave generations. The current Wave 3 cools about 20% harder (6,100 BTU) and reaches temperature roughly 5 minutes faster, per EcoFlow’s published specs — the Wave 2 is adequate for a tent or car cabin, not a larger enclosed space.
- At ~32 lb, it’s not something you’d want to hand-carry far. Fine for a vehicle or a fixed camp setup, less so for backpacking.
Who should buy it
The Wave 2 makes sense if you find genuine clearance stock around $599 or less, plan to run it mostly on wall or 12V power (skipping the NMC add-on battery entirely), and just need sealed, portable cooling for a tent, van, or vehicle cabin. If you want to run it cordless on a regular basis, the cycle-life gap on the add-on battery pushes us toward recommending the Wave 3 instead, despite its higher $999 starting price — its add-on battery uses the same LiFePO4 chemistry we favor across every pick in our best portable power station rankings. And if cooling isn’t your primary need — you just want backup power — see that same rankings page for standard power stations instead.
EcoFlow Wave 2 Portable Air Conditioner
- Sealed, installation-free portable AC and heater — no exhaust hose or window bracket needed.
- No built-in battery; runs on wall/12V power or an optional $349 NMC add-on battery (~8 hr runtime).
- Discontinued as of July 2026 — current clearance pricing is roughly 54% off the original $1,299 MSRP.
Running the Wave 2 off a separate power station instead of its own add-on battery pack means you’ll also want spare charging cables and a backup battery on hand for longer trips — Amazon Prime ships those free in two days, and you can try it free for 30 days.
The bottom line
The EcoFlow Wave 2 is a genuine end-of-life clearance deal — sealed, installation-free portable cooling at roughly 54% off its original price — as long as you go in knowing it has no built-in battery and its optional add-on pack uses older, shorter-lived NMC chemistry rather than the LiFePO4 the successor Wave 3 uses. For occasional wall-powered or car-powered use, that trade-off is easy to accept at $599. For frequent cordless use, the durability gap is worth paying more to avoid. See our LiFePO4 vs. lithium-ion guide for the full chemistry breakdown, or our full portable power station rankings if you’re shopping for backup power rather than cooling. EcoFlow’s Glacier portable fridge hides a similar naming trap — the feature that made the original model distinctive (a built-in ice maker) was dropped from the current Glacier Classic lineup entirely.