HEPASilent Ultra™ is our most advanced filtration technology ever. Every component is uniquely designed in Sweden to provide the maximum performance and energy efficiency. This patent-pending technology combines electrostatic and mechanical filtration to remove 99%² of bacteria and remove dust, pollen, dander, mold, VOCs, and odors. HEPASilent Ultra™ delivers 50% more clean air³, uses 55% less energy and has a 10% lower noise than traditional true HEPA filtration⁴.
Even when your air purifier is on standby, the patent-pending GermShield™ technology proactively monitors your room and removes⁶ viruses and bacteria on the filters using low air draft and plasma charging.
Unlike other air purifiers that only push clean air to a small part of the room, the patent-pending SpiralAir™ outlets are uniquely engineered to deliver 360°, omni-directional airflow - quickly circulating more clean air to every corner of the room - so you breathe clean air wherever you are.
A premium LCD display gives detailed updates on your air quality – concentrations of different sized particles, VOC levels, temperature and humidity. It even tracks your filter usage to let you know in real time what percentage you have left.
Verifide® by the Association of Home Appliance Manufacturers (AHAM) for performance and Clean Air Delivery Rate (CADR).
Rated as an energy-efficient air purifier by the EPA's ENERGY STAR® rating program.
Verified Zero Ozone by Intertek Sustainability. Meets UL 2988 and does not emit more than 0.0005 PPM as tested.
Identified as one of the quietest products in the category and awarded the Quiet Mark by the Noise Abatement Society (NAS).
Certified by the California Air Resources Board for meeting the ozone emissions limit.
Selected as a winner of the 2021 Red Dot Design Award in the areas of product design, communication design, and design concepts.
Awarded the 2021 iF Design Award, from one of the world’s most celebrated and valued design competitions, recognized as a symbol of design excellence around the world.
Recommended by Asthma Allergy Nordic as being a product that makes everyday life better for those with allergies, contact allergies, asthma, or other respiratory distress.
Designed with smart features like Clean air ETA⁸ and real-time pollutant tracking, you can be sure your air is always clean.
The SmartFilter has a smart RFID chip that proactively monitors real-time usage and accurately judges when you need to replace it, with a maximum of 1-year lifetime.
Advanced sensors keep track of the levels of coarse particles (PM10) like dust, pollen, mold spores, and ash and fine particles (PM2.5 and PM1) like smoke, viruses and bacteria.⁰ If pollutant levels creep up, the Blueair app will track the air purifier's progress with real-time “ETA” updates until air is clean.
Feature can only be enjoyed with the Blueair app.
A premium LCD display gives detailed updates on your air quality – concentrations of different sized particles, VOC levels, temperature and humidity. It even tracks your filter usage to let you know in real-time what percentage you have left.
The Blueair app allows you to monitor your home's air quality and adjust the settings remotely with your smartphone, tablet, Alexa, or Google Assistant (expected December 2020) enabled device.
In Auto mode, the Protect air purifier automatically increases fan speed when pollution levels rise and slows it down when the air is clean again.
Hidden wheels allow you to easily move the air purifier anywhere in the room, and the cord can be adjusted to the perfect length with a convenient winder.
Completely filters room air at the industry recommended rate of 4.8x an hour to effectively lower particle levels (rooms up to 62 m²).
Wi-Fi connectivity for remote controlYes
On/off timerYes (via Blueair App)
Filter replacement indicatorYes
Speed control options1 - 2 - 3 - AUTO - NIGHT
Integrated air sensorsYes
Included in Box
- Protect™ 7770i air purifier
- Instruction manual
Dimensions(HxWxD)33.9 x 13.4 x 13.4 in
Energy consumption8 - 76 Watts
Sound level25 - 53 dB(A)
Recommended filter changeEvery 6 – 12 months depending on your environment (your unit will let you know)
Recommended room size674 ft2
Air changes per hour (ACH)4.8
Clean air delivery rate (CADR) - Pollen435 cfm
Clean air delivery rate (CADR) - Dust>400 cfm
Clean air delivery rate (CADR) - Smoke435 cfm
Number of filters1
Guarantee clean air for years to come with extended warranty coverage when you register your air purifier.
The technology used in Protect™ air purifiers is the combination of the HEPASilent Ultra™, Germshield™ and SpiralAir technologies™.
HEPASilent Ultra™ is a combination of mechanical and electrostatic filtration, which ensures particle removal and gas reduction. Compared to the HEPASilent technology (used with Blueair Classic and JOY air purifiers), the new Ultra™ technology combines an optimised fan system, engineered in Sweden by Blueair, optimised electrostatic filtration and an improved filter.
Germ growth may happen when temperature and humidity levels are high. The Germshield™ functionality is designed to prevent germ growth inside the air purifier when the air purifier is not in use.
Three airflow speeds, Automode, Germshield™, Connection with Blueair app (see WiFi and Blueair app FAQ for more information), Indoor air quality indications on the air purifier, Filter change indicator.
The Blueair SmartFilter is the only filter available for the Protect™ air purifiers.
It consists of two filters attached by a strap at the top. Each filter has a particle filter media and activated carbon.
The Protect™ air purifiers also have two pre-filters that can be cleaned with a dust cloth or by using the soft brush of a vacuum cleaner.
Blueair’s product claims are derived from innovative tests developed and executed by professionals. Here, the SARS-CoV-2 testing conducted on the Health Protect 7400 was limited to measuring only the air purifier’s ability to remove the SARS-CoV-2 virus from a 13 ft3 controlled test chamber. The test did not measure whether once the virus was captured by the air purifier if it was deactivated or killed, or whether the air purifier was able to prevent transmission of the virus from person to person. Blueair is committed to transparency and veracity in making our claims, which is why we provide clarifications to ensure our products and our testing are accurately represented.
Per the CDC’s recommendation, improving indoor air quality and ventilation can reduce the exposure to and transmission of COVID-19. An air purifier can play a vital role to improve air ventilation but cannot offer complete protection on its own. We recommend following CDC guidelines for a layered approach, including using air purifiers to aid in improving air ventilation as part of your tool kit to combat COVID-19.
¹24/7 protection refers to the key function of GermShield technology, that is activated when the unit is in standby mode. Tested on Staphylococcus albus and MS2 bacteriophage.
²Deactivation of bacteria (Staphylococcus albus) and virus (MS2 bacteriophage).
³Based on third-party testing, using GB/T18801-2015 test standards on airborne viruses and bacteria (H1N1, Staphylococcus aureus, and Escherichia coli).
⁴Based on third-party testing of removal rate of fine particles according to GB/T18801-2015 standard and pollen removal rate according to AHAM AC/1-2019 standard.
⁵Deactivation of germs on natural flora (excluding viruses)
⁶Based on testing of particle Clean Air Delivery Rate (pCADR according to GB/T18801-2015) in Protect 7400 model at the same fan speed, compared to using H13 true HEPA filtration in the same unit.
⁷Based on testing of energy consumption (W) and noise levels (dB, according to ISO 3743) in Protect 7400 model with the same particle Clean Air Delivery Rate (pCADR according to GB/T18801-2015), compared to using H13 true HEPA filter in the same unit
⁸Deactivation of germs within natural flora (excluding viruses) under normal temperature and humidity conditions.
⁹HEPASilent technology combines mechanical and electrostatic filtration to provide a higher particle Clean Air Delivery Rate (pCADR) than conventional methods of only using mechanical filtration (at the same rpm on the fan and energy consumption of 18.3W). Based on particle CADR tests according to GB/T18801-2015 standard.
¹⁰Based on the recommended room size of 674 ft²
¹¹Compared to incandescent lightbulb.
¹²Based on testing of noise levels (dB, according to ISO 3743) in Protect 7700 model.