Dehumidifiers

Pint capacity, continuous drainage, and basement performance.

Freestanding dehumidifier with water collection tank on a basement floor

Dehumidifier capacity ratings changed in 2019 — older 70-pint units became 50-pint units under new DOE test conditions. Understanding the actual numbers for your space, drainage needs, and temperature conditions is the whole game.

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Guides

Buying guides for dehumidifiers — capacity math, drainage options, and basement vs living-area performance.

TroubleshootingWhy your dehumidifier won't collect water or turn onRuns but the bucket's empty, won't switch on, or leaking on the floor? It's a fridge with its door open — the fault is a dirty coil, a stuck float, or a drain run uphill, not a dead compressor. Check the fire-recall list first.GuideThe pint rating is measured in a sauna, not your basementA dehumidifier's headline 'pints per day' number is tested under hot, soaking conditions that don't match your cool basement. Buy by that number and you'll o…GuideWhy Your Dehumidifier Stops Working When It's ColdA standard dehumidifier pulls water onto a cold coil — and below about 65°F that coil frosts over and the unit stops collecting. Why compressor models strugg… Buying guide How to choose a dehumidifier: pint capacity, room size, and drainage The 2019 DOE capacity standard change, sizing by square footage and severity, continuous drain vs pump options, and why basement performance differs from the spec sheet.

Why this page exists

Dehumidifier capacity ratings changed significantly in 2019 when the Department of Energy updated test conditions from 80°F/60% RH to 65°F/60% RH. A unit previously rated at 70 pints/day became a 50-pint unit — not because it got worse, but because the standard became more realistic for the cool, damp basements where most dehumidifiers actually operate.

Older units and some listings still use the pre-2019 ratings, making direct comparisons confusing without understanding the history. This guide explains how to read current specs and size correctly for your space.

Plain note about money. Links below go to eBay searches with an affiliate tag. If you buy through one, a small commission comes to this site. Your price is identical either way. The searches are ones we'd actually run — not sponsored placements.

Dehumidifiers worth searching on eBay

Units across size classes and use cases. We earn a small commission on qualifying sales; your price is unchanged. Full disclosure.

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30/80/ 120/ 150 Pint Energy Star Dehumidifier For Home, Basement & Large Space Basement Dehumidifier Full-size units (35–50 pint/day post-2019) designed for cool, damp basement environments. Continuous drain port is essential for unattended basement operation. GE 50 Pint ENERGY STAR Portable Dehumidifier with Smart Dry, Gray 50-Pint Dehumidifier The current standard large-capacity class under post-2019 DOE ratings — equivalent to the old 70-pint class. Rated for spaces up to roughly 2,000 sq ft under moderate conditions. Pohl Schmitt 225 sq ft. Electric Dehumidifier, Portable, 17 oz Capacity Small Dehumidifier Compact units (20–30 pint/day) for bedrooms, bathrooms, and small spaces. Lower noise and lower power draw, but tank empties faster and requires continuous drain if running overnight. 52 Pt. 4500 sq. ft. Large Home Dehumidifier with Drain and Water Tank,Indoor Dehumidifier with Pump Built-in condensate pump allows draining upward to a utility sink, window, or floor drain that is not gravity-accessible. Critical for basements without a floor drain nearby. ALORAIR Sentinel HD55 Dehumidifier White 53 Pint 1200 SF Crawl, Basement (NIB) Crawl Space Dehumidifier Compact, horizontally-oriented units designed for the low-clearance, uninsulated environments of crawl spaces. Often Energy Star rated and built for 24/7 continuous operation.
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