The only dehumidifier here that still works at freezing.

Ivation 13-Pint Desiccant Dehumidifier (IVADDH06)

Ivation

A true desiccant, and the answer for a cold garage or crawl space: it pulls 11.8 pints a day at 41°F, where a compressor manages under three, and it keeps running down to 33°F. It's small (270 sq ft), thirsty, and pricey at $290 — but nothing else here works in the cold.

Every compressor dehumidifier in this category shares one weakness: it condenses moisture onto a cold coil, and as the room approaches freezing that coil frosts over. The machine then spends its time defrosting instead of drying. Below about 40°F, a compressor is close to useless. The Ivation IVADDH06 is a true rotary desiccant — it absorbs moisture onto a slowly turning wheel, with no cold coil anywhere — so the cold doesn't bother it. Ivation's own figures tell the story: 11.8 pints a day at 41°F, against roughly 2.9 for a comparable compressor, with operation down to 33°F. It weighs eleven pounds, so it goes out to the garage one-handed, and with no compressor there's nothing to clunk on and off. The costs are real. It covers only about 270 square feet, so this is a small-space tool, not a basement machine. It draws up to 470 watts for a modest output, which makes it the most expensive unit here to run. And at around $290 it's the priciest per pint in the category. Buy it for the one job it alone can do: a cold garage, a crawl space, a boat, an unheated room in winter.

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Last reviewed Jul 11, 2026

What we like

• ✓A true rotary desiccant — it keeps pulling water down to 33°F, where compressors frost up and stop.
• ✓Ivation rates it at 11.8 pints a day at 41°F, against roughly 2.9 for a comparable compressor.
• ✓Eleven pounds, so it moves between a garage, a crawl space, or a boat one-handed.
• ✓No compressor means nothing cycles on and off, and a continuous drain hose is included.

Trade-offs

• −Covers only about 270 sq ft — a small-space tool, not a basement machine.
• −Draws up to 470 W for a modest output, making it the most expensive unit here to run.
• −Ivation publishes no noise figure, and no independent lab has tested this exact model.
• −At about $290 it's the priciest per pint in the category.