How Are Dehumidifiers Rated: All About the Old and New Standards

Last Updated on May 23, 2024 by Justin Williams

Dehumidifiers are essential appliances for homes and businesses in humid climates. They help to remove moisture from the air, which can improve air quality, prevent mold growth, and make your home more comfortable.

But how do you know which dehumidifier is right for you?

Dehumidifiers are rated according to two main standards: pint capacity and energy efficiency.

dehumidifier DOE standards

Pint Capacity: The Old vs. The New

Pint capacity refers to the amount of water a dehumidifier can remove from the air in 24 hours under specific conditions. The higher the pint capacity, the more moisture the dehumidifier can remove.

Before late 2019/early 2020, dehumidifiers were tested in an environment of 80 degrees Fahrenheit with 60% humidity. Under these conditions, a typical dehumidifier might be rated as a 30-pint, 50-pint, or 70-pint dehumidifier, which indicated the amount of water it could remove from the air in 24 hours.

However, the standards have now changed. Dehumidifiers are now tested in a cooler environment, 65 degrees Fahrenheit with 60% humidity. This new environment has less moisture to remove, so dehumidifiers will have a lower pint capacity rating according to the new standards.

50-Pint vs 70-Pint Dehumidifier: The Shift

A 70-pint dehumidifier under the old standards would be equivalent to a 50-pint dehumidifier under the new standards.

The change in testing standards has led to some confusion for consumers. However, this doesn't mean that the dehumidifier is less powerful, it simply means that it has been tested under different conditions.

If you are looking for a dehumidifier that can remove a lot of moisture from the air, you should look for a model with a pint capacity of 50 pints or higher under the new standards. This is equivalent to a 70-pint dehumidifier under the old standards.

Energy Efficiency: Integrated Energy Factor (IEF)

The old energy efficiency standard measured the Energy Factor, which was the amount of water removed per kilowatt-hour of electricity consumed while the dehumidifier was actively removing moisture.

The new standards use the Integrated Energy Factor, which measures the energy consumed even when the dehumidifier is not actively removing moisture but the fan is still running. This is considered a more accurate representation of real-world energy use since dehumidifiers turn on and off based on the humidity level.

Old Pint Capacity

New Pint Capacity

Typical Applications

30 Pint

20 - 22 Pint

Small bedrooms, bathrooms.

50 Pint

30 - 35 Pint

Basements, living rooms, large bedrooms

70 Pint

40 - 50 Pint

Basements, whole-house use (smaller homes, apartments)

100 Pint

70 - 80 Pint

Large basements, crawl spaces, whole-house use

Tips on Choosing the Best Dehumidifier for Your Home in 2024

If you are buying a new dehumidifier, be sure to check the pint capacity and energy efficiency ratings.

The new pint capacity ratings are lower than the old ratings, so you may need to buy a dehumidifier with a higher pint capacity than you would have under the old standards.

The new energy efficiency ratings are more accurate, so you can be sure that you are getting a dehumidifier that is energy efficient.

Here are some additional tips for choosing a dehumidifier:

  • Consider the size of your space: A larger dehumidifier is needed for a larger space.
  • Think about your climate: If you live in a humid climate, you will need a dehumidifier with a higher pint capacity.
  • Consider your budget: Dehumidifiers range in price from around $100 to $500 or more
  • Read reviews before you buy: This can help you to narrow down your choices and find a dehumidifier that is right for you.

By understanding the new dehumidifier standards and considering your specific needs, you can confidently choose the right dehumidifier to create a more comfortable and healthy living or working environment.

0/5 (0 Reviews)