Should you replace your old air purifier?

Compare what your current air purifier costs to run with a new ENERGY STAR model. Enter the energy your old one uses, your electricity price and a new model, and see the yearly and ten-year savings. This counts electricity only.

Old air purifier: annual energy use (kWh per year)

Enter how much energy your old one uses a year.

Air purifiers have no yellow EnergyGuide label. Use a plug-in energy meter over a typical day of running and multiply by the number of days a year you run it, or use the rated power if you only have that.

Your state Or your own rate (cents per kWh) New air purifier Or enter its annual energy use (kWh per year)

Choose a new model or enter its annual kWh.

Purchase price of the new one, in dollars (optional, for the payback time)

What this calculator does not tell you

It counts electricity only. Purchase price, repair costs, delivery, and whether your current air purifier still works well are separate parts of the decision.
The ENERGY STAR figure for a new model is a standardized value. Your own use will differ with how the appliance is used and where it stands.
Your old figure may be a guess. If you can, measure it.

Typical numbers for each type and state are on the cost to run a air purifier by state page. Browse all air purifiers.

Should you replace your old air purifier?

What this calculator does not tell you

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