The Blue Signature Large SP4i is recommended for rooms up to 705 ft², where it will deliver the industry recommended standard of 4.8 air changes per hour (ACH)—ensuring consistently clean, refreshed air throughout the space.
The Blue Signature Medium SP3i is recommended for a room up to 498 ft², where it will deliver the industry recommended standard of 4.8 air changes per hour (ACH)—ensuring consistently clean, refreshed air throughout the space.
Thanks to their high-performance design, the SP4i and SP3i can also be used in larger rooms; however, the number of air exchanges per hour will naturally decrease as room size increases.
With industry-leading Clean Air Delivery Rates (CADR), the SP4i and SP3i are engineered to provide exceptional air purification for a wide range of pollutants.
CADR Rates for SP4i
455 for Smoke, 434 for Dust, and 450 for Pollen
CADR Rates for SP3i
321 for Smoke, 309 for Dust, and 330 for Pollen