Five 70-pint dehumidifiers below were checked on Amazon on October 12, 2026. Several older picks on the old page are gone or are renewed units with very few ratings, so they were dropped. Specs come from Amazon listings and are maker claims.
A 70-pint dehumidifier is the big gun for a damp basement. But 70 pints does not always mean 70. Here is what the label means today and five models worth a look.
Table of Contents
What Does 70 Pints Really Mean?
In June 2019, the U.S. test for dehumidifiers changed. The new test runs at cooler, more realistic conditions: 65 degrees and 60 percent humidity. Under the old test, a unit was rated at 80 degrees. The same machine now gets a lower number. A unit sold as 70 pints under the old test is rated around 50 pints under the new one.
That is why some listings still say 70 pints and others say 50. Many are the same size machine. Check whether the listing says which test it uses. The Energy Star label uses the new test.
Who Needs a 70-Pint Class Unit?
- A wet basement of 2,500 to 4,500 square feet.
- A whole floor that stays damp in summer.
- A home with a laundry room or a workshop that adds moisture.
For a smaller space, a 50-pint unit may be enough. See our list of the best 50-pint dehumidifiers and use the dehumidifier pint calculator to check size.
Looking ahead, the 70-pint label is fading. After the 2019 test change, a unit that was sold as 70 pints is now rated around 50, so most new big dehumidifiers are labeled 50 pints or by square feet. Sellers still use the old number because it sounds strong. The catch is that you can buy two units with the same label and get very different real performance.
5 70-Pint Dehumidifiers on Amazon
Prices and ratings were checked on Amazon on October 12, 2026.
Price on Amazon: $149.99 | 4.3 stars from 1,606 ratings (checked October 12, 2026)
The Keystone KSTAD70B is listed as a 70 pint room dehumidifier for rooms up to 4,500 square feet, with an LED display, a 24 hour timer and auto-restart. It has a 4.3 rating from over 1,600 ratings.
Price on Amazon: $149.99 | 4.2 stars from 581 ratings (checked October 12, 2026)
The Inofia 70 Pint is listed for 4,500 square feet with a drain hose, laundry mode and caster wheels. It has a 4.2 rating from 581 ratings.
Price on Amazon: $308.15 | 3.9 stars from 8,225 ratings (checked October 12, 2026)
The Frigidaire 70-Pint has a 3.9 rating from over 8,200 ratings. It has the most ratings, but the score is lower than the others.
Price on Amazon: $449.99 | 3.8 stars from 654 ratings (checked October 12, 2026)
The Frigidaire 70-Pint with Pump has a 3.8 rating from 654 ratings. The pump adds about $140 over the plain model.
Price on Amazon: $297.98 | 4.0 stars from 705 ratings (checked October 12, 2026)
The COLZER 70 Pint is listed for 4,000 square feet with a 7.4 pint bucket and a continuous drain hose. It has a 4.0 rating from 705 ratings.
The risk to watch is paying for pints you do not get. A 70-pint sticker on an old-style listing may mean about 50 pints in today’s test. A very large unit in a small room also short cycles, which wears the compressor and leaves the air clammy. Expect more listings with saturation numbers that look huge. Look for the AHAM or Energy Star rating, the square feet and the drain type.
What to Check Before You Buy
- Drain. Pick a hose or a pump so you never empty a bucket. A pump costs more, see the Frigidaire above.
- Square feet. Match the listing to your space. Read how to choose the right size dehumidifier.
- Cold rooms. Compressor units slow down below about 60 degrees, so look for auto defrost in a cold basement.
- Noise. Big units are loud. Plan where to put it.
- Reviews. A 3.8 with thousands of ratings is a real number. Read recent reviews for failure reports.
More 70-Pint Reviews
We have reviewed several 70-pint models on this site, including the Ivation 70-pint with pump, the Frigidaire FFAD7033R1, the Honeywell TP70PWK and the Kenmore KM70. For a basement-specific list, read best dehumidifiers for basements.
FAQ
Is a 70-pint dehumidifier too big for a basement?
Not for a big or very damp one. For a small, mildly damp basement, 50 pints is usually enough.
How many square feet does a 70-pint unit cover?
The listings above say 4,000 to 4,500 square feet. Treat it as the top end in a damp space.
Why do 70-pint units cost so little?
Many are older design units sold under the old test. The pints are real, but the new-test rating is lower.
Final Word
For a big, damp space on a budget, the Keystone KSTAD70B is the value pick. For no buckets, add a pump model like the Frigidaire with built-in pump.
What happens next: expect big dehumidifiers to be sold by square feet and current-test pints, with pumps built in. For a large damp basement, a unit in the 50 to 70 pint class is still the right size.
Related Guides
Keep going with best 50-pint dehumidifiers, how to choose the right size dehumidifier, dehumidifier pint calculator, best dehumidifiers for basements and Ivation 70-pint review.
