BLUEAIR Blue Pure 311i Max vs Medify MA-40
Side-by-side comparison based on published product information. Check Amazon for current price and availability.
How we evaluate products
We compare published manufacturer specifications, manuals, support policies, and relevant public guidance. We do not present unpublished laboratory or in-home measurements as our own testing.
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Use the feature table below to match published specifications to your room, filtration, and noise requirements. We do not assign an overall score without retained independent test evidence.

BLUEAIR Blue Pure 311i Max
BLUEAIR
Check Amazon for the current price

Medify MA-40
Medify
Check Amazon for the current price
Feature comparison
| Feature | BLUEAIR Blue Pure 311i Max | Medify MA-40 |
|---|---|---|
| Coverage | 439 sq ft (4.8 ACH) | 373 sq ft (4.8 ACH, AHAM Verifide) |
| CADR | 283 / 314 / 365 CFM (Smoke / Dust / Pollen) | 239 / 231 / 240 CFM (Smoke / Dust / Pollen) |
| Filter type | HEPASilent dual filtration (mechanical + electrostatic) with combined particle + carbon filter | 3-stage pre-filter + H13 True HEPA + activated carbon composite |
| Noise level | 23-50 dB (rated) | 40-53 dB (rated); up to 66 dB measured by HouseFresh |
| Weight | 7.8 lbs | 17.5 lbs |