Quick Answer: Walmart sells window air conditioners under two brand names built by the same manufacturer — Midea’s own U-shaped inverter line (about $360-450, per Walmart’s current listings) and the budget Arctic King line (about $140-225 new, per Walmart and Midea’s own parts-lookup database). The giveaway: one Walmart listing is literally titled “Midea Arctic King 10,000 BTU Slide Casement Window Air Conditioner.” The price gap buys a real difference — inverter compressor, quieter running, app control — not just a cheaper label on the same unit. Both lines carry Walmart’s standard 30-day cooling-category return window.
Walmart’s window AC shelf (and its website) can look like two unrelated product lines at a glance. They’re not — and knowing that changes which one is actually worth the extra money.
What Walmart actually stocks
| Brand / Model | BTU | Compressor | Typical Walmart price |
|---|---|---|---|
| Midea U 8,000 BTU (MAW08V1QWT) | 8,000 | Inverter, U-shaped | ~$358-378 |
| Midea U 10,000 BTU | 10,000 | Inverter, U-shaped | ~$358-370 |
| Midea U 12,000 BTU | 12,000 | Inverter, U-shaped | ~$358-452 |
| Arctic King 5,000 BTU (WWK05CM01N) | 5,000 | Standard, slab | ~$164-224 |
| Midea Arctic King 10,000 BTU (slide/casement) | 10,000 | Standard | ~$150-170 (Restored) |
Refurbished Midea U-shaped units also show up in Walmart’s Restored program at a steep discount — a 12,000 BTU model has been listed as low as roughly $210, against $358-452 new.
The real story behind the two brand names
This is the part most shoppers scrolling Walmart’s window AC category miss entirely: Arctic King isn’t a competing manufacturer — it’s Midea’s own Walmart-exclusive house brand. Midea’s official parts-lookup database lists Arctic King models under Midea’s internal SKU prefix, and Walmart’s own catalog occasionally drops the pretense altogether — one listing is titled straight out “Midea Arctic King 10,000 BTU Slide Casement Window Air Conditioner,” naming both brands on the same product. This site’s Arctic King buying guide documents the same arrangement on the portable side of Midea’s lineup; it extends to window units too.
So the choice on Walmart’s shelf isn’t really “Midea vs. a rival brand” — it’s Midea’s premium tier vs. Midea’s budget tier, sold side by side under two names. The U-shaped line earns its roughly 2-3x price premium with a genuinely different mechanism: an inverter compressor that varies speed instead of cycling on and off (quieter, cheaper to run, and the reason this site’s best window air conditioner guide ranks the Midea U first overall), plus a U-shaped body that lets the window glass sit between you and the compressor for extra noise isolation. Arctic King skips all of that for a standard fixed-speed compressor in a conventional slab body — a legitimate budget AC, just not a cut-rate version of the inverter unit next to it on the same page.
Walmart’s return policy on window ACs
Window units fall into the same bucket as portable ACs in Walmart’s return system: a 30-day window for cooling-and-heating appliances, shorter than Walmart’s standard 90-day policy, and conditional on having the receipt and original factory packaging. That’s the identical rule this site’s Walmart portable AC guide already covers in more depth, including the Restored program’s longer 90-day return window on refurbished units — a detail that applies to the refurbished Midea U-shaped window units too, not just the portable Duo.
Our picks from Walmart’s own lineup
Midea U 8,000 BTU (MAW08V1QWT) — Worth the Premium
- The same model this site's window AC pillar guide ranks best overall — quiet enough (about 42 dBA on low, per Midea's spec) to sleep next to, and still lets you crack the window.
- Walmart's Restored section occasionally lists this exact line refurbished for well under $300 — check there before paying full price new.
Don’t sweat the return-window fine print — Prime ships most window units to your door in two days, and you can try it free for 30 days.
Arctic King 5,000 BTU (WWK05CM01N) — Walmart's Budget Tier, Same Engineer
- Midea-built hardware under the Arctic King house-brand name, for a small bedroom or home office where inverter quiet isn't worth 2-3x the price.
- See our Arctic King buying guide for how the rest of the lineup (including the portable models) compares.
How to choose
- Want quiet and efficiency, and don’t mind paying for it? The Midea U-shaped line is the one to buy — see our best window air conditioner guide for how it stacks up against LG, Windmill, and GE’s competing inverter units.
- Just need cold air for a small room on a tight budget? Arctic King is genuine Midea hardware at the lowest price Walmart offers — just know you’re trading away the inverter’s quiet running, not getting a “cheaper Midea U.”
- Checking Walmart’s Restored section? Refurbished Midea U-shaped units have shown up well below new pricing, with the same 90-day refurbished-goods return window our Walmart portable AC guide covers in detail.
- Shopping other big-box retailers too? Our Home Depot and Menards window AC guides cover their own brand lineups and return-policy quirks.
- Want the full lineup Walmart’s catalog doesn’t cover? See our complete window AC rankings for every brand and BTU tier this site has tested.
The bottom line
Walmart’s window AC shelf isn’t two competing brands — it’s one manufacturer’s premium and budget tiers sold under two different names, with Walmart’s own product listings occasionally confirming the connection outright. Buy the Midea U-shaped line if quiet, efficient running matters to you; buy Arctic King if it doesn’t and you’d rather save $150-250. Either way, the identical models are sold on Amazon at similar prices with the same return window Walmart’s cooling category gets — no store trip required to compare them side by side first.