Air purifier energy use
Electricity, run time, and the ENERGY STAR label.
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How much electricity?
ENERGY STAR says a standard room air cleaner, operating continuously, uses approximately 394 kWh per year in electricity. It says that is more than the energy used by some new refrigerators.
What the label means
EPA says the ENERGY STAR label means a portable air cleaner meets strict energy efficiency guidelines set by EPA. It says the label does not refer to its air-cleaning effectiveness in any way.
How ENERGY STAR measures it
ENERGY STAR says its specification measures efficiency with the Integrated Energy Factor, which uses a Clean Air Delivery Rate-to-Watt ratio.
The packaging disclaimer
EPA quotes the disclaimer on ENERGY STAR packaging: "EPA does not endorse any manufacturer claims of healthier indoor air from the use of this product."
Size and energy
ENERGY STAR says larger models use more energy and advises choosing a model sized to fit your room.
Run time
EPA says longer run times increase the amount of air filtered. A unit that runs longer uses more electricity. Your bill depends on your rate and run time, and we do not estimate it.
FAQ
General information only. An air purifier is not a substitute for ventilation, for removing the source of a pollutant, or for medical care. Read and follow the maker's manual. The California Air Resources Board strongly advises against the use of ozone generators in spaces occupied by people or animals. If you have asthma, allergies, or heart or lung disease, talk to your doctor. During wildfire smoke, follow local officials and be ready to evacuate. In an emergency, call 911.
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Filters, power, and upkeep.
