Air Purifiers ranked by annual energy cost

Which air purifier is cheapest to run?

Among the 80 air purifiers compared here, the 4612522000 (Blueair) is lowest at $5.10/yr and the AD4000 (AirDoctor) is highest at $67.35/yr - a difference of $62.25 per year, meaning the highest costs 1221% more than the lowest.

What is a typical yearly running cost for air purifiers?

The median across 80 sampled air purifiers is $24.82/yr, with the middle half between $16.15/yr and $33.49/yr. These figures apply the site-wide rate assumption of $0.17/kWh to the certified annual kWh reported by each manufacturer.

Do ENERGY STAR Most Efficient air purifiers cost less to run?

In this sample, yes. Median running cost by certification status is ENERGY STAR Most Efficient: $15.13 across 23 models, ENERGY STAR Certified: $27.54 across 57 models. Certification is relative to product class, so size still matters more than the label when comparing two specific models.

Are newly certified air purifiers more efficient?

Median running cost by certification year is 2026: $24.82 (71 models), 2025: $17.51 (9 models). The most recent 2026 cohort is 42% higher than the 2025 cohort. Sample composition differs by year, so this is an observation about the models listed here rather than proof of a trend.

How are the running costs for these air purifiers calculated?

Each of the 80 air purifiers listed here uses the annual kWh reported for that exact model in the EPA ENERGY STAR certified dataset, multiplied by a flat $0.17/kWh. For this category that produces a range of $5.10/yr to $67.35/yr around a $24.82/yr median. Nothing here is measured or estimated by this site and no external benchmark is mixed in, so if your local rate differs you can scale every figure by the same factor - the ranking between models does not change.