50-Pint vs 70-Pint Dehumidifiers: Which Size Fits?

What the 50 and 70 pint numbers mean

When a dehumidifier title names 50 pints or 70 pints, it names the unit's capacity group. Capacity is stated in pints per day, the amount of water the unit can remove in 24 hours under a standard measurement set by the U.S. Department of Energy. The Department of Energy defines this rating and the method for measuring it, as its consumer dehumidifier page explains.

A 50-pint and a 70-pint unit sit in adjacent capacity groups on this site's review guides. The numbers describe the seller's stated capacity, not a promise about your space. Two units in the same group may differ in the details that matter for your setup: whether a pump is built in, whether a drain hose is included, and whether the title names an Energy Star mark. You can compare how this site reviews dehumidifiers by stated details before you look at specific models.

• 50-pint and 70-pint are listing terms for capacity groups, not measured coverage.
• The capacity rating comes from a Department of Energy measurement standard.
• Two units in the same capacity group can differ in water handling and features.

Why one title can list two capacity figures

Some dehumidifier titles show two pint figures, such as a 70-pint name and a 45-pint name for what looks like the same unit. This happens because the Department of Energy changed the rating method. Starting in 2020, portable dehumidifiers are measured at a cooler temperature that more closely matches a basement setting, so the reported capacity is lower than under the old method.

The Energy Star program explains this on its page about dehumidifier capacity ratings. A unit rated under the old method may carry a different figure when rated under the new method. The actual change for a specific model varies. When a title shows two figures, read the maker's page to see which standard each figure comes from and which number reflects the current rating. Learn more about energy use differences between capacity groups.

If you are replacing an older unit, the lower figure may still meet your needs, but only the maker can say which standard applies to a specific model. The Energy Star page gives a rough correlation table for old and new capacities; for your model, ask the maker directly.

• A 70-pint title may also carry a lower figure under the 2020 rating method.
• The Department of Energy changed the measurement temperature and procedure.
• The maker's page is the place to confirm which standard a figure uses.

Area figures on a listing are labels, not coverage

A dehumidifier title often prints a floor area, such as 1,500 or 3,000 square feet. That figure is the seller's own label for the space they describe, not a measured promise about any room in your home. This site reviews units by their stated details and never converts a capacity figure into a coverage area.

When you compare a 50-pint and a 70-pint unit, look at the area figure the same way you look at the pint figure: as a listing term. The maker's page may include a note about the conditions they assumed for that area. Read that note before you match a unit to a finished basement, a workshop, or a rental bathroom. Learn how this site explains the difference between area figures and real-world coverage.

The Energy Star buying guidance suggests that the capacity you need depends on the size of the space and the conditions in it, and it provides suggested ranges for capacity based on dampness. Those ranges are recommendations from Energy Star, not promises from this site. For your exact room, ask the maker how they arrived at their area figure.

Energy Star and the energy efficiency metric

The Energy Star program explains that a dehumidifier carrying the Energy Star label uses more efficient refrigeration coils, compressors, and fans to remove the same amount of moisture as a similarly sized conventional unit while using 20% less energy. That statement comes from the Energy Star program, and this site never states the mark for a listing that does not name it.

The energy efficiency of dehumidifiers is measured by a metric called the integrated energy factor (IEF), which lists liters of water removed per kilowatt-hour of energy consumed. The Energy Star page explains that IEF replaced the older energy factor metric in 2019 and now includes the energy the unit uses when it is cycled off. Read more about energy factor versus the Energy Star rating.

When a title names an Energy Star mark, you can read the Energy Star product page to see the certified details for that model. When a title does not name the mark, this site does not claim it. The IEF value, if printed, belongs on the maker's page and is the number to read there.

What a review on this site compares

A 50-pint and a 70-pint unit appear in reviews that compare stated details: the title's capacity group, the area figure, the kind (compressor or desiccant), whether a pump or a drain hose is named, and whether the unit is described as commercial or whole-house. The review does not promise that a unit will dry a room in a set time, reach a certain humidity, or lower an energy bill.

When you read a review that names a 50-pint or a 70-pint unit, take from it the details you can verify on the listing: the water handling options, the controls, the wheels or handles, and the questions to ask the maker. Then read the maker's page for the measuring standard, the area note, the IEF, and the operating conditions. The best 50-to-99-pint dehumidifiers with a pump compare these details side by side in the guidance for that capacity group.

The review can also point you to a matching buying guide, such as the best 50-to-99-pint units with a pump or the Energy Star certified models in that range. The guide orders picks by stated details and their fit for use situations, not by price rank.

How to choose between the two capacity groups

The choice between a 50-pint and a 70-pint listing starts with the details on the title, not with a formula. Look at the water handling first: does the title name a pump, a drain hose, or a continuous drain option? A basement with no floor drain nearby may call for a pump in the title. A laundry room where you can run a hose to a sink may work with a gravity drain.

Then read the kind: a compressor unit for a typical basement, a desiccant unit for colder spaces, and a low-grain or LGR unit for commercial and restoration work. The capacity group is one of several labels you compare side by side. See the basement dehumidifier with pump guide for water handling options.

Finally, use the area figure the same way you use any listing label: as the seller's description of the space they had in mind. Ask the maker for the area note and for the conditions they assumed. This site's reviews present the details and the questions; the maker's page holds the answers.

• Start with water handling: pump, drain hose, or bucket only.
• Read the kind: compressor, desiccant, or LGR.
• Use the area figure as a seller label, not a coverage promise.
• Ask the maker for the measuring standard and the area note.

When a 70-pint title is worth a look

A 70-pint title appears most often in the middle capacity group, between the common 50-pint names and the 100-pint or 150-pint commercial names. If you are shopping for a basement, a 70-pint listing with a pump may sit in the same guide as a 50-pint pump model, and the review will compare their stated details.

A 70-pint title may also carry a drain hose in the listing, which is useful when you can route the hose to a floor drain or a sump according to the maker's manual. The pump and hose terms are what the review compares, not a claim about drying speed.

For larger spaces, the 100-pint basement dehumidifier guide covers the higher capacity groups. A 70-pint unit is a middle-tier label that fits a range of basements and workshops, but the fit depends on the details the review lists and the answers you get from the maker.

Questions to take to the maker's page

Before you decide between a 50-pint and a 70-pint listing, write down the details you need from the maker: which capacity standard the figure uses, what conditions the area figure assumes, what IEF value the unit shows, and whether the unit is rated for the temperatures of your space.

The Energy Star program notes that frost can form on coils if the air temperature drops below 65 degrees Fahrenheit, and some units come with an anti-frost sensor. The maker's page states the operating temperature range for a specific model; this site does not provide that figure.

For a whole-house unit, the Energy Star guidance says it should be sized and installed by a professional. That is a licensed installer's job, not a setup you do yourself. The maker's page and the installer's guidance hold the answers for drain routing and placement.

• Which capacity standard does the pint figure use?
• What conditions does the area figure assume?
• What is the integrated energy factor for this model?
• What operating temperatures does the maker specify?
• Is the unit rated for a basement setting, per the current standard?

A note on moisture and mold

Dehumidifiers remove moisture from the air, and listings describe that in pints per day. If you are choosing a unit because a space feels damp, the U.S. Environmental Protection Agency and the Centers for Disease Control and Prevention both publish guidance on moisture and mold in homes. The key to mold control is moisture control, and a dehumidifier is one tool for that.

Read the EPA mold page and the CDC mold page for guidance on moisture and mold in your home. These sources are listed under Sources at the end of this article. This article does not summarize or replace their advice. The CDC notes that an air conditioner or dehumidifier can help keep humidity levels low, and the EPA explains that controlling moisture is the way to control mold growth. Their pages hold the details.

A dehumidifier is not a cleanup service and does not remove mold that has already grown. If you see or smell mold, follow the guidance on the EPA and CDC pages about cleaning it up and fixing the moisture problem.

What to pick for your situation

Questions

Is a 70-pint dehumidifier better than a 50-pint unit?

Neither figure is better on its own. The numbers are listing labels for capacity groups under a standard measurement. Compare the stated details on each title: the pump, the drain hose, the kind, and the area figure, then read the maker's page for the measuring standard and the area note. The 50-to-99-pint pump guide shows how these details compare side by side.

Why does a 70-pint title also show a smaller number?

The Department of Energy changed the rating method for portable dehumidifiers starting in 2020, and units are now measured at a cooler temperature that more closely matches a basement setting. A unit rated under the old method may carry a lower figure under the new method. The Energy Star page gives a rough correlation; for a specific model, ask the maker. Learn more about energy use differences between capacity groups in this article.

Can a 50-pint or 70-pint unit cover a certain square footage?

The area figure on a dehumidifier title is the seller's own label, not a measured coverage promise. The Energy Star buying guidance suggests capacity ranges based on dampness and space, but the maker's page states the conditions they assumed for the area figure. Read the area note before you match a unit to your room. This site explains how area figures and real-world coverage differ.

Do 70-pint units use more energy than 50-pint units?

Energy use depends on the specific model, not just the capacity label. The integrated energy factor (IEF) measures liters of water removed per kilowatt-hour, and a higher IEF means a more efficient unit, as the Energy Star page explains. Read the IEF on the maker's page for each model you compare. This site explains energy factor versus Energy Star without stating the mark for a listing.

What should I read on the listing before choosing a capacity group?

Read the title for the capacity figure, the area label, the kind (compressor, desiccant, or LGR), and the water handling words (pump, drain hose, bucket). Then read the maker's page for the measuring standard, the area note, the IEF, and the operating temperature range. The reviews hub shows how to read these details across many models.

How does this site compare a 50-pint and a 70-pint unit?

This site reviews units by their stated details: the capacity group, the area figure, the kind, the water handling, and the controls. The review does not promise drying times, humidity levels, or coverage. It points you to questions for the maker and to a buying guide that fits your use. Start with the 50-to-99-pint pump guide or the basement pump guide.