Dyson Purifier Humidify+Cool PH03

Product overview

Dyson Purifier Humidify+Cool PH03: What to Know

This entry replaces the original Dyson Purifier Humidify+Cool PH01 named in the initial candidate list: Dyson's outlet pages confirm the PH01 is now sold only as refurbished stock, not as a new current-generation model, while the PH03 is the current base model Dyson and retailers like Best Buy sell new (a newer PH04 with additional Auto-react sensing also sits above the PH03 in Dyson's current lineup). The PH03 combines a sealed HEPA H13 and activated-carbon filter rated to capture 99.97% of particles down to 0.3 microns with Dyson's Air Multiplier bladeless fan and a humidification function, all controlled through one machine.

Dyson rates purification coverage at 1,000 square feet and humidification coverage at 750 square feet, both larger than the dedicated humidifiers in this list, but tank capacity is one spec that could not be confirmed cleanly: some retailer and review sources describe roughly a 1-gallon reservoir good for up to 36 hours of humidification, while at least one source references a 5-liter tank that appears to describe a regional or different-generation variant. Rather than pick one figure, we'd flag this as a spec worth confirming directly with Dyson or a retailer before buying if exact tank size matters to your routine.

Dyson's Ultraviolet Cleanse feature treats water inside the tank with a UV LED before it's humidified, which Dyson says removes 99.9% of bacteria in the water, notably, this treats water sitting in the reservoir, a more thorough approach than the point-of-dispensing UV treatment used in Honeywell's HCM350, where reviewers specifically criticized standing reservoir water as untreated. The tradeoff is noise: Dyson's own figures put the PH03 at up to 54.3 dB at its highest fan speed, noticeably louder than the dedicated humidifiers here at their equivalent top settings, though it can run at lower, quieter airflow if you don't need the cooling-fan function.

Key Listed Features