Dehumidifiers Key Efficiency Criteria

Qualified models meet all ENERGY STAR requirements as listed in the Version 5.0 ENERGY STAR Program Requirements for Dehumidifiers that are effective as of October 31, 2019.

ENERGY STAR Dehumidifiers – Eligible Product Types1


A product, other than a portable air conditioner, room air conditioner, or packaged terminal air conditioner, that is a self-contained, electrically operated, and mechanically encased assembly consisting of: (a) a refrigerated surface (evaporator) that condenses moisture from the atmosphere; (b) a refrigerating system, including an electric motor; (c) an air-circulating fan; and (d) means for collecting or disposing of the condensate.

Portable Dehumidifier

A dehumidifier designed to operate within the dehumidified space without the attachment of additional ducting, although means may be provided for optional duct attachment.

Whole-Home Dehumidifier

A dehumidifier designed to be installed with ducting to deliver return air to its inlet and to supply dehumidified air from its outlet to one or more locations in the dehumidified space. Only whole-home dehumidifiers with product capacities less than or equal to 155 U.S. pints/day are eligible for ENERGY STAR.

ENERGY STAR Efficiency Criteria for Certified Portable Dehumidifiers



Product Capacity (pints/day)

Integrated Energy Factor Under Test Conditions1 (L/kWh)

Portable Dehumidifiers

≤ 25.00

≥ 1.57

25.01 to 50

≥ 1.80

≥ 50

≥ 3.30

ENERGY STAR Efficiency Criteria for Certified Whole-Home Dehumidifiers



Product Case Volume (ft3)

Integrated Energy Factor Under Test Conditions1 (L/kWh)

Whole-Home Dehumidifiers

≤ 8.0

≥ 2.09

> 8.0

≥ 3.30


Integrated Energy Factor (IEF): A measure of energy efficiency of a dehumidifier that expresses the amount of water the dehumidifier can remove with a given energy input under test conditions1, reported in liters per kilowatt hour (L/kWh).

Product Capacity: A measure of the ability of a dehumidifier to remove moisture from its surrounding atmosphere, measured in pints collected per 24 hours of operation under specified test conditions.1

Product Case Volume: For whole-home dehumidifiers, this is a measure of the rectangular volume that the product case occupies, exclusive of any duct attachment collars or other external components.

[1] Definitions of product types and test conditions are based on 10 CFR Part 430, Subpart B, Appendix X1