Philips AC4221 Air Purifier
Premium pick
Philips AC4221 Air Purifier review
Verdict: The most powerful purifier in our list: 600 m³/h CADR for living rooms up to 780 sq ft, with PM2.5, gas, temperature and humidity sensors and app control. Expensive.
9.4SahiRating score
Excellent
Excellent
Independent picks. No brand pays to be listed or ranked. As an Amazon Associate I earn from qualifying purchases. Commissions never change our scores.
Best for
How well it suits each real-life use, from our research.
- Delhi winter / large room10.0
- Bedroom at night10.0
- Peace of mind (warranty)7.5
What we like
- Highest CADR (600 m³/h)
- Covers up to 780 sq ft
- App, Alexa and Google Assistant
What we don't
- High price
- Large unit
Specs & findings
Cleaning
| Item | Value | Score |
|---|---|---|
| CADR (brand claim)Brand spec | 600m³/h | 10.0 |
| Recommended room size (claim)Brand spec | 780sq ft |
Comfort
| Item | Value | Score |
|---|---|---|
| Lowest noise (claim)Brand spec | 15dB | 10.0 |
Ownership
| Item | Value | Score |
|---|---|---|
| Warranty2 years (Philips) | 2years | 7.5 |
Cost
| Item | Value | Score |
|---|---|---|
| Filter life (claim)Philips spec | 9,000hours |
Our research
Scores are calculated from manufacturer-published specifications using the formula on our How We Rate page. We have not lab-tested this unit.
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