Quick answer
The DREO Air Purifier 338S reliably captures common allergens like pollen, pet dander, and dust mites thanks to its 3‑stage HEPA filter and 115 CFM airflow. Real‑world testing shows a noticeable drop in PM2.5 levels within minutes. For most households, it provides a solid upgrade to indoor air quality without the need for additional devices.
Air Purifier 338S
If you’re battling sneezing, itchy eyes, or a lingering dust smell, the 338S promises a measurable improvement. Its TurboPure™ system pairs high airflow with a true HEPA filter, targeting particles as small as 0.3 µm.
Below we answer the most common questions about allergen removal, testing methods, and how the unit fits into a broader indoor‑air‑quality strategy.
How effective is the 338S at removing common allergens?
In controlled tests, the 338S reduced airborne pollen and pet dander concentrations by up to 85 % within the first 30 minutes. The real‑time PM2.5 display lets you see the drop instantly, confirming the filter’s work.
The device also handles dust mites and mold spores, though extremely high humidity can slow capture. Pairing the purifier with a dehumidifier helps maintain optimal performance.
- Place the unit in the room where you spend the most time for fastest relief.
What does “HEPA filter effectiveness” really mean for me?
HEPA (High Efficiency Particulate Air) filters must capture 99.97 % of particles 0.3 µm or larger. The 338S’s 3‑stage design adds a pre‑filter for larger debris and an activated‑carbon layer for odors, making the HEPA core work longer and more efficiently.
Because the filter life is tracked via the app, you’ll know exactly when to replace it, avoiding the guesswork that can reduce effectiveness.
- Replace the filter when the app signals 80 % usage to keep capture rates high.
How was the 338S tested for indoor air quality improvement?
DREO conducted side‑by‑side chamber tests using standardized aerosol generators that mimic pollen, dander, and dust. Sensors recorded PM2.5 before and after the purifier ran, showing consistent reductions across all allergen types.
User‑submitted data on the DREO app also reflects similar trends, confirming lab results translate to everyday homes.
- Look for the RGB air‑quality display turning green as a quick visual cue of improvement.
FAQ Summary
Allergen removal capability
Captures up to 85 % of pollen, dander and dust mites within 30 minutes, verified by lab and user data. Expect rapid relief in rooms where the unit runs continuously.
Smart features & maintenance
RGB air‑quality display, app‑based filter‑life tracking, and built‑in aroma pad for optional scent. Set up the app once and let it handle filter reminders automatically.
Best use cases
Ideal for bedrooms, living rooms, or home offices with moderate to high allergen loads. Place the purifier centrally and keep humidity below 60 % for optimal performance.
Key product specifications
- Air Purifier 338S: 115 CFM Purification Power TurboPure™ Purification System Powerful 3-Stage HEPA Filter Real-Time PM2.5 with RGB Air Quality Display Smart Control & Filter Life Tracking Built-in Aroma Pad Compartment High airflow combined with a true HEPA filter ensures fast and thorough removal of allergens, while real‑time monitoring lets you verify performance at a glance.
- Heater Solaris Slim H2 (new): Fast far‑reaching heat with 3 settings, an additional fan‑only mode, precise ECO mode for savings, and multiple safety functions Provides complementary climate control for winter months, allowing you to maintain comfortable humidity levels that support the purifier’s efficiency.
Overall, the DREO Air Purifier 338S delivers strong allergen removal backed by real‑world testing, smart monitoring, and easy maintenance, making it a practical addition to any home seeking cleaner air.
