Why Pint Ratings Changed on Newer ENERGY STAR Models

A newer ENERGY STAR dehumidifier may list fewer pints per day than an older model that seems similar. The main reason is a change in the federal test procedure: newer ratings are based on cooler, more basement-like conditions, where a dehumidifier removes less moisture. The lower number does not automatically mean the unit is less effective in your home.

Why the number got smaller

Older dehumidifiers were commonly rated at 80°F and 60% relative humidity. The updated test procedure measures capacity at 65°F and 60% relative humidity. Because cooler air contains less moisture, a dehumidifier generally collects less water during that test.

ENERGY STAR models use the applicable federal test method for their capacity rating. So when comparing a newer model with an older one, the pint figures may come from different conditions. The test-method change—not ENERGY STAR certification by itself—is the key reason the numbers can look different.

What the pint rating tells you

Pints per day is a standardized measure of how much moisture a dehumidifier removes under specified test conditions. It is useful for comparing products rated under the same procedure, but it is not a promise that the unit will collect that exact amount every day in your home.

Actual collection depends on factors such as room temperature, relative humidity, airflow, and how continuously the unit runs. A warmer, more humid room may produce more condensate than the newer rating test; a cool or relatively dry room may produce less.

How to compare an older model with a newer one

• Check the test method and rating details. Look at the product label, EnergyGuide information, or manufacturer documentation. Confirm that the figures use the same procedure before treating them as a direct comparison.
• Use current ratings to compare current models. Pint-per-day figures are most useful when the models were rated under the same method.
• Size for the space and moisture problem. Follow the manufacturer's sizing guidance for the room or basement, taking into account how damp the space is. Don’t choose a replacement solely by matching an older pint number.
• Compare efficiency separately. ENERGY STAR certification indicates that a model meets the applicable efficiency criteria; it does not mean its pint rating will match an older model's rating.

If you are replacing an older unit, also consider whether it kept the space comfortable, ran continuously, or struggled during damp weather. Those details can help you choose capacity more reliably than comparing two ratings from different test eras.