BLUEAIR Air Purifiers for Home Large Room up to 3,385 Ft², Signature SP4i

Price: $439.99
(as of Oct 14, 2026 19:06:31 UTC – Details)


Breathe cleaner air with the Blueair Blue Signature Air Purifier, designed for large homes and open spaces. Using Blueair’s proprietary HEPASilent filtration technology, this air purifier helps remove airborne particles such as dust, pollen, pet dander, smoke, and household odors. Ideal for large living rooms, apartments, basements, and open floor plans, the Blue Signature can clean rooms up to 3,385 square feet in one hour, helping maintain fresh indoor air even in high-traffic spaces. Smart sensors continuously monitor indoor air quality and automatically adjust fan speed when needed. Through the Blueair mobile app, you can track air quality levels, adjust settings, and receive filter replacement reminders. With its furniture-inspired design, the Blue Signature blends naturally into your home décor while quietly working in the background to improve indoor air. Whether you’re dealing with pet odors, seasonal allergies, dust buildup, or smoke, the Blueair Blue Signature air purifier helps keep your indoor air clean and comfortable.
POWERFUL AIR PURIFIER FOR LARGE SPACES: Quickly cleans rooms up to 705 sq ft in just 12.5 minutes and 3,385 sq ft every hour, helping create a healthier, more comfortable environment in large living rooms, open floor plans, apartments, and offices.
ADVANCED FILTRATION FOR CLEANER, FRESHER LIVING: Blueair’s advanced 7-stage HEPASilent filtration captures 99.97%** of airborne particles down to 0.1 microns, while OdorFence Technology helps break down odors, gases, and VOCs.
WHISPER-QUIET PERFORMANCE: Operating as low as 23 dB, helping clean the air without disrupting sleep, focus, relaxation, or everyday activities.
SMARTER PURIFICATION WITH LESS EFFORT: Control fan speed, schedules, and settings from anywhere using the Blueair app, while Auto Mode intelligently adjusts purification based on changing indoor air conditions.
REAL-TIME AIR QUALITY AT A GLANCE: Built into the air outlet, the air quality indicator displays real-time pollution levels with 5 easy-to-read colors-from excellent (blue) to poor (red)- plus a subtle animation when actively cleaning.
SCANDINAVIAN DESIGN THAT ELEVATES YOUR SPACE: A modern, furniture-inspired design doubles as a stylish side table while blending seamlessly into everyday living spaces. Customize the look with interchangeable pre-filters available in a variety of colors to match your space and style.
Customers find the air purifier performs well, making a noticeable difference in air quality and effectively reducing dust and pollen levels. They appreciate its sleek design, ease of use, and quick odor removal capabilities. The noise level receives mixed feedback – while some find it very quiet, others note it can get loud on higher settings. Value for money opinions are divided, with some considering it worth the investment while others say it’s not worth the price.