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American brand best known for tools
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Focuses on budget-friendly window air conditioners and select portable models
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Offers three main series: BWAC, BD, and BD-M
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Prioritizes simple setup and essential features over longevity
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Widely available via Amazon, Walmart, and other mass retailers
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Ideal for renters and short-term use — but lacks polish and premium build

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New York–based startup focused on design-forward, eco-conscious window ACs
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Currently offers a single product line in multiple BTU sizes (cooling only)
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Known for ultra-quiet performance, smart connectivity, and clean aesthetics
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Excels in urban apartments and modern interiors
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Limited product variety and premium pricing hold it back for broader use
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Ideal for style-focused renters and tech-savvy small-space users
Windmill Air Conditioners
Windmill is one of the youngest — and boldest — names in the air conditioner market. Launched by a team of New York natives, the brand set out to fix everything people hate about traditional window units: ugly boxes, loud fans, and headache-inducing installations. Their flagship product is a sleek, whisper-quiet window AC with Wi-Fi control, eco-conscious packaging, and an interface so minimalist it could pass for a Sonos speaker. But for all its design chops, Windmill is still a niche player with limited muscle — so let’s see where its sleek simplicity shines, and where it’s not quite ready for primetime.
BLACK+DECKER Air Conditioners
Black+Decker is a household name in the U.S., but traditionally in power tools and small appliances — not air conditioning. Over the last decade, however, the company has carved out a space in the AC market by licensing its brand to OEM partners who manufacture budget-friendly cooling units, particularly for short-term use. While their portable ACs are better known, Black+Decker also offers a trio of window air conditioner series: the digitally controlled BWAC series, the simplified BD series, and the basic BD-M mechanical dial line. All are designed for ease of use and mass affordability, and while they look solid on paper, the real test is in performance and longevity. So — is the rugged branding just a sticker, or does it hold up in the heat?