Air Purifiers comparison
Compare air purifiers — CADR, coverage area, True HEPA H13+, carbon filter, and minimum noise level.
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We’ll plot them side by side. Only air purifiers are suggested for a fair fight.
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Best air purifiers right now
What matters when comparing air purifiers
This air purifiers page covers 17 products and compares the measurable fields that most often separate one model from another: cadr, coverage, true hepa h13+, min noise, activated carbon. Use the filters to narrow the field, open a product page for the complete readout, and use a head-to-head page when two models are close enough that a category-wide rank is not enough.
How to read the ranking
Mars Score is a normalized category score, not a laboratory replacement and not a claim that the highest-ranked product is right for every buyer. A high score indicates broad strength across the weighted fields; a lower score can still be the better choice when one specific requirement matters more than the average.
Read the scoring methodology →Popular air purifiers comparisons
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Brands in air purifiers
How to choose an air purifier in 2026
Air purifier Mars Scores weight performance (70%) and smart/noise (30%). Performance is dominated by two numbers: CADR (clean air delivery rate) and rated coverage area, both verified against AHAM or CADR-equivalent test standards. Marketing "rooms up to 1,500 sq ft" claims are usually 5× the real number.
CADR is the only spec that matters at scale
A unit with 600+ m³/h CADR (Coway Airmega 400, Levoit Core 600S) cleans a 40 m² room four times per hour. Smaller units (200–350 m³/h) need to run continuously to keep up. Filter the catalog by cadr_m3h and coverage_m2 before anything else.
True HEPA H13+ vs "HEPA-type"
Marketers will write "HEPA" on anything; only has_hepa_13 true (filters 99.95% of 0.3 µm particles) actually meets the medical-grade standard. Pair with an activated carbon stage (has_carbon_filter) for VOCs, smoke and cooking odors.
Noise floor on quiet mode
A purifier rated 65 dB on turbo is irrelevant — you run it on quiet overnight. noise_db_min is the spec that decides whether it lives in the bedroom or stays in the living room. Anything above 30 dB on quiet mode will keep light sleepers awake.
Sensors and smart features
PM2.5 + VOC sensors with app reporting let you see actual room air quality and verify the purifier is doing something. Without sensors you are guessing. See Mars Labs for our sensor-accuracy bench tests and Field Reports for long-term filter cost analysis.
How vsMars scores air purifiers
Mars Score for air purifiers is dominated by CADR and coverage — the two specs that determine whether the unit can actually keep up with your room volume. See methodology for the full weighting.
Frequently asked
How many air purifiers are catalogued on vsMars?+
17 air purifiers from 10 brands are catalogued in this category, each with a complete spec sheet and a transparent Mars Score.
How are air purifiers ranked?+
Each air purifier is scored by the category-specific Mars Score formula — a weighted average of normalized specs with the weights published on the methodology page. No editorial hand-tuning.
Which air purifier has the highest Mars Score right now?+
7770i leads the air purifiers category with a Mars Score of 93.1.
Can I compare two air purifiers side by side?+
Yes — pick any two air purifiers from the category list and the comparison page renders side-by-side specs, advantages on each side, and a Mars Score verdict.