Philips PureProtect Water 3400 Series Smart Air Purifier and Humidifier (Dark Slate)
Purifies rooms up to 78m2 The unit's airflow reaches every corner of the room with an air purification rate (CADR) of 300m3/h. It can easily handle large spaces of up to 78m2 (1) and can clean a room of 20m2 in less than 10 minutes (2) 3-layer HEPA filtration traps 99.97% of smallest particles 3-layer filtration made of pre-filter, HEPA Nano - Protect and Active Carbon captures 99.97% of particles as small as 0.003 microns (3) – smaller than the smallest known virus! Humidification rate 650ml/h Combat dry air symptoms such as dry skin, chapped lips, irritated nose or throat, with rapid humidification up to 650 ml/h (4). The humidity is detected and automatically adjusted to your desired setting. Nano - Cloud technology No technology releases cleaner water vapor than Nano - Cloud. Its ultra-fine mist is invisible to the naked eye and extremely difficult for bacteria or residue to adhere to. Humidify air with up to 99.9% fewer bacteria released than standard ultrasonic humidifiers, safe to use with tap water. (5) Captures viruses from the air Removes 99.9% of airborne viruses and bacteria. Independently tested to eliminate H1N1 influenza virus (6), Staphylococcus bacteria (7), and 99.97% of SARS-Co - V-2, the cause of COVID-19 (8). Sleep mode for quiet operation Enjoy undisturbed sleep with our innovative purifier. In Sleep mode, it operates only at 16.5 d - B (9), quieter than a whisper. Also, the digital display light is dimmed, minimizing any light disturbance. Low energy consumption Enjoy cleaner air while keeping your energy bill low. At maximum power, the air purifier uses only 43W, less energy than a traditional light bulb. Smart air quality sensors Aera - Sense technology scans the air 1000x a second to detect harmful pollutants and intelligently selects the best setting. It displays the air quality in real time (PM2.5), as well as the level of humidity. Smart control with Air+ app Pair your purifier with the Air+ app to track indoor and outdoor air quality and remotely control the device. Choose Auto+ mode in the app for Al technology that adapts to your routine, minimizing sound and energy use. Key Features Thorough cleaning of rooms up to 78 m2 3-layer HEPA filtration traps 99.97% of smallest particles Automatic humidification of up to 650 ml/h Hygienic humidification with Nano - Cloud technology Effectively reduces viruses like H1N1 (flu) from the air Sleep mode for ultra-quiet operation Lower energy consumption than a light bulb Intelligently senses and adapts to your indoor air quality Control your purifier anywhere with the Philips Air+ app Traps smells and gas pollutants 3.2L water tank for continuous humidification up to 15h Long lasting filter for up to 1 year Disclaimer (1) CADR tested according GB/T18801-2022. Suitable purification area calculated to NRCC-54013 standard. (2) Calculated: 48m3 room, CADR of 300m3/h (3) From the air that passes through the filter, tested to DIN71460 with Na - Cl aerosol 0.003um and 0.3um, i - UTA (4) Tested by CVC according to GB/T 23332-2018. Initial temperature of 23+2°C and relative humidity of 30±2% RH (5) Vs. standard ultrasonic humidifiers without additional technology to reduce the spread of bacteria, as tested by an independent lab (6) Microbial Reduction Rate Test by Airmid Healthgroup Ltd. with influenza (H1N1) in 28.5m3 test chamber, using turbo mode for 30-40min (7) Tested to GB21551.3-2010 with S. Albus, 30m3 chamber, 1h, Turbo mode, 3rd party lab (8) Microbial Reduction Rate Test by Antimikrop with SARS-Co - V-2 in 30m3 test chamber, using turbo mode for 1h. (9) Sound pressure, IEC 60704, at 1.5m.
Purifies rooms up to 78m2 The unit's airflow reaches every corner of the room with an air purification rate (CADR) of 300m3/h. It can easily handle large spaces of up to 78m2 (1) and can clean a room of 20m2 in less than 10 minutes (2) 3-layer HEPA filtration traps 99.97% of smallest particles 3-layer filtration made of pre-filter, HEPA Nano - Protect and Active Carbon captures 99.97% of particles as small as 0.003 microns (3) – smaller than the smallest known virus! Humidification rate 650ml/h Combat dry air symptoms such as dry skin, chapped lips, irritated nose or throat, with rapid humidification up to 650 ml/h (4). The humidity is detected and automatically adjusted to your desired setting. Nano - Cloud technology No technology releases cleaner water vapor than Nano - Cloud. Its ultra-fine mist is invisible to the naked eye and extremely difficult for bacteria or residue to adhere to. Humidify air with up to 99.9% fewer bacteria released than standard ultrasonic humidifiers, safe to use with tap water. (5) Captures viruses from the air Removes 99.9% of airborne viruses and bacteria. Independently tested to eliminate H1N1 influenza virus (6), Staphylococcus bacteria (7), and 99.97% of SARS-Co - V-2, the cause of COVID-19 (8). Sleep mode for quiet operation Enjoy undisturbed sleep with our innovative purifier. In Sleep mode, it operates only at 16.5 d - B (9), quieter than a whisper. Also, the digital display light is dimmed, minimizing any light disturbance. Low energy consumption Enjoy cleaner air while keeping your energy bill low. At maximum power, the air purifier uses only 43W, less energy than a traditional light bulb. Smart air quality sensors Aera - Sense technology scans the air 1000x a second to detect harmful pollutants and intelligently selects the best setting. It displays the air quality in real time (PM2.5), as well as the level of humidity. Smart control with Air+ app Pair your purifier with the Air+ app to track indoor and outdoor air quality and remotely control the device. Choose Auto+ mode in the app for Al technology that adapts to your routine, minimizing sound and energy use. Key Features Thorough cleaning of rooms up to 78 m2 3-layer HEPA filtration traps 99.97% of smallest particles Automatic humidification of up to 650 ml/h Hygienic humidification with Nano - Cloud technology Effectively reduces viruses like H1N1 (flu) from the air Sleep mode for ultra-quiet operation Lower energy consumption than a light bulb Intelligently senses and adapts to your indoor air quality Control your purifier anywhere with the Philips Air+ app Traps smells and gas pollutants 3.2L water tank for continuous humidification up to 15h Long lasting filter for up to 1 year Disclaimer (1) CADR tested according GB/T18801-2022. Suitable purification area calculated to NRCC-54013 standard. (2) Calculated: 48m3 room, CADR of 300m3/h (3) From the air that passes through the filter, tested to DIN71460 with Na - Cl aerosol 0.003um and 0.3um, i - UTA (4) Tested by CVC according to GB/T 23332-2018. Initial temperature of 23+2°C and relative humidity of 30±2% RH (5) Vs. standard ultrasonic humidifiers without additional technology to reduce the spread of bacteria, as tested by an independent lab (6) Microbial Reduction Rate Test by Airmid Healthgroup Ltd. with influenza (H1N1) in 28.5m3 test chamber, using turbo mode for 30-40min (7) Tested to GB21551.3-2010 with S. Albus, 30m3 chamber, 1h, Turbo mode, 3rd party lab (8) Microbial Reduction Rate Test by Antimikrop with SARS-Co - V-2 in 30m3 test chamber, using turbo mode for 1h. (9) Sound pressure, IEC 60704, at 1.5m.
Purifies rooms up to 78m2 The unit's airflow reaches every corner of the room with an air purification rate (CADR) of 300m3/h. It can easily handle large spaces of up to 78m2 (1) and can clean a room of 20m2 in less than 10 minutes (2) 3-layer HEPA filtration traps 99.97% of smallest particles 3-layer filtration made of pre-filter, HEPA Nano - Protect and Active Carbon captures 99.97% of particles as small as 0.003 microns (3) – smaller than the smallest known virus! Humidification rate 650ml/h Combat dry air symptoms such as dry skin, chapped lips, irritated nose or throat, with rapid humidification up to 650 ml/h (4). The humidity is detected and automatically adjusted to your desired setting. Nano - Cloud technology No technology releases cleaner water vapor than Nano - Cloud. Its ultra-fine mist is invisible to the naked eye and extremely difficult for bacteria or residue to adhere to. Humidify air with up to 99.9% fewer bacteria released than standard ultrasonic humidifiers, safe to use with tap water. (5) Captures viruses from the air Removes 99.9% of airborne viruses and bacteria. Independently tested to eliminate H1N1 influenza virus (6), Staphylococcus bacteria (7), and 99.97% of SARS-Co - V-2, the cause of COVID-19 (8). Sleep mode for quiet operation Enjoy undisturbed sleep with our innovative purifier. In Sleep mode, it operates only at 16.5 d - B (9), quieter than a whisper. Also, the digital display light is dimmed, minimizing any light disturbance. Low energy consumption Enjoy cleaner air while keeping your energy bill low. At maximum power, the air purifier uses only 43W, less energy than a traditional light bulb. Smart air quality sensors Aera - Sense technology scans the air 1000x a second to detect harmful pollutants and intelligently selects the best setting. It displays the air quality in real time (PM2.5), as well as the level of humidity. Smart control with Air+ app Pair your purifier with the Air+ app to track indoor and outdoor air quality and remotely control the device. Choose Auto+ mode in the app for Al technology that adapts to your routine, minimizing sound and energy use. Key Features Thorough cleaning of rooms up to 78 m2 3-layer HEPA filtration traps 99.97% of smallest particles Automatic humidification of up to 650 ml/h Hygienic humidification with Nano - Cloud technology Effectively reduces viruses like H1N1 (flu) from the air Sleep mode for ultra-quiet operation Lower energy consumption than a light bulb Intelligently senses and adapts to your indoor air quality Control your purifier anywhere with the Philips Air+ app Traps smells and gas pollutants 3.2L water tank for continuous humidification up to 15h Long lasting filter for up to 1 year Disclaimer (1) CADR tested according GB/T18801-2022. Suitable purification area calculated to NRCC-54013 standard. (2) Calculated: 48m3 room, CADR of 300m3/h (3) From the air that passes through the filter, tested to DIN71460 with Na - Cl aerosol 0.003um and 0.3um, i - UTA (4) Tested by CVC according to GB/T 23332-2018. Initial temperature of 23+2°C and relative humidity of 30±2% RH (5) Vs. standard ultrasonic humidifiers without additional technology to reduce the spread of bacteria, as tested by an independent lab (6) Microbial Reduction Rate Test by Airmid Healthgroup Ltd. with influenza (H1N1) in 28.5m3 test chamber, using turbo mode for 30-40min (7) Tested to GB21551.3-2010 with S. Albus, 30m3 chamber, 1h, Turbo mode, 3rd party lab (8) Microbial Reduction Rate Test by Antimikrop with SARS-Co - V-2 in 30m3 test chamber, using turbo mode for 1h. (9) Sound pressure, IEC 60704, at 1.5m.
Purifies rooms up to 78m2 The unit's airflow reaches every corner of the room with an air purification rate (CADR) of 300m3/h. It can easily handle large spaces of up to 78m2 (1) and can clean a room of 20m2 in less than 10 minutes (2) 3-layer HEPA filtration traps 99.97% of smallest particles 3-layer filtration made of pre-filter, HEPA Nano - Protect and Active Carbon captures 99.97% of particles as small as 0.003 microns (3) – smaller than the smallest known virus! Humidification rate 650ml/h Combat dry air symptoms such as dry skin, chapped lips, irritated nose or throat, with rapid humidification up to 650 ml/h (4). The humidity is detected and automatically adjusted to your desired setting. Nano - Cloud technology No technology releases cleaner water vapor than Nano - Cloud. Its ultra-fine mist is invisible to the naked eye and extremely difficult for bacteria or residue to adhere to. Humidify air with up to 99.9% fewer bacteria released than standard ultrasonic humidifiers, safe to use with tap water. (5) Captures viruses from the air Removes 99.9% of airborne viruses and bacteria. Independently tested to eliminate H1N1 influenza virus (6), Staphylococcus bacteria (7), and 99.97% of SARS-Co - V-2, the cause of COVID-19 (8). Sleep mode for quiet operation Enjoy undisturbed sleep with our innovative purifier. In Sleep mode, it operates only at 16.5 d - B (9), quieter than a whisper. Also, the digital display light is dimmed, minimizing any light disturbance. Low energy consumption Enjoy cleaner air while keeping your energy bill low. At maximum power, the air purifier uses only 43W, less energy than a traditional light bulb. Smart air quality sensors Aera - Sense technology scans the air 1000x a second to detect harmful pollutants and intelligently selects the best setting. It displays the air quality in real time (PM2.5), as well as the level of humidity. Smart control with Air+ app Pair your purifier with the Air+ app to track indoor and outdoor air quality and remotely control the device. Choose Auto+ mode in the app for Al technology that adapts to your routine, minimizing sound and energy use. Key Features Thorough cleaning of rooms up to 78 m2 3-layer HEPA filtration traps 99.97% of smallest particles Automatic humidification of up to 650 ml/h Hygienic humidification with Nano - Cloud technology Effectively reduces viruses like H1N1 (flu) from the air Sleep mode for ultra-quiet operation Lower energy consumption than a light bulb Intelligently senses and adapts to your indoor air quality Control your purifier anywhere with the Philips Air+ app Traps smells and gas pollutants 3.2L water tank for continuous humidification up to 15h Long lasting filter for up to 1 year Disclaimer (1) CADR tested according GB/T18801-2022. Suitable purification area calculated to NRCC-54013 standard. (2) Calculated: 48m3 room, CADR of 300m3/h (3) From the air that passes through the filter, tested to DIN71460 with Na - Cl aerosol 0.003um and 0.3um, i - UTA (4) Tested by CVC according to GB/T 23332-2018. Initial temperature of 23+2°C and relative humidity of 30±2% RH (5) Vs. standard ultrasonic humidifiers without additional technology to reduce the spread of bacteria, as tested by an independent lab (6) Microbial Reduction Rate Test by Airmid Healthgroup Ltd. with influenza (H1N1) in 28.5m3 test chamber, using turbo mode for 30-40min (7) Tested to GB21551.3-2010 with S. Albus, 30m3 chamber, 1h, Turbo mode, 3rd party lab (8) Microbial Reduction Rate Test by Antimikrop with SARS-Co - V-2 in 30m3 test chamber, using turbo mode for 1h. (9) Sound pressure, IEC 60704, at 1.5m.
in 8 offers
The lowest price for Philips PureProtect Water 3400 Series Smart Air Purifier and Humidifier (Dark Slate) right now is $249.00 at Home Clearance, compared across 8 retailers.
The all-time low was $249.00 on 10 June 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 10 June 2026.
Last updated at 10/06/2026 07:52:00
Philips 3400 Series 2-in-1 Air Purifier and Humidifier, HEPA NanoProtect + Active Carbon Filter, Hygienic Humidification at 650ml/h, CADR 300m³/h for
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips 2in1 Purifier & Humidifier Dark Slate AC3421-13 - Clearance
Free delivery
Philips PureProtect Water 3400 Series Smart 2-in-1 Air Purifier and Humidifier AC3421/13
Free delivery between 12–19 June
Philips PureProtect Water 3400 Series Smart Air Purifier and Humidifier (Dark Slate)
Delivery $15.99
Philips 3400 Series 2-in-1 Air Purifier and Humidifier
Philips 3400 Series AC3421/13 PureProtect Water Smart Air Purifier Dark Slate Grey
Free delivery between 15–24 June
Philips 2in1 Purifier & Humidifier Dark Slate
Free delivery
Philips 3400 Series 2-in-1 Air Purifier and Humidifier HEPA NanoProtect + Activated Carbon Filter Hygienic Humidification with 650 ml/h CADR 300
Delivery between 14–18 June $15.52
| Special feature | Automatic Humidification with NanoCloud technology |
| Filter type | HEPA |
| Floor area | 78 Square Meters |
| Power/Wattage | 43 watts |
| Noise Level | 16.5 dB |
Philips 3400 Series 2-in-1 Air Purifier and Humidifier, HEPA NanoProtect + Active Carbon Filter, Hygienic Humidification at 650ml/h, CADR 300m³/h for
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips 2in1 Purifier & Humidifier Dark Slate AC3421-13 - Clearance
Free delivery
Philips PureProtect Water 3400 Series Smart 2-in-1 Air Purifier and Humidifier AC3421/13
Free delivery between 12–19 June
Philips PureProtect Water 3400 Series Smart Air Purifier and Humidifier (Dark Slate)
Delivery $15.99
Philips 3400 Series 2-in-1 Air Purifier and Humidifier
| Special feature | Automatic Humidification with NanoCloud technology |
| Filter type | HEPA |
| Floor area | 78 Square Meters |
| Power/Wattage | 43 watts |
| Noise Level | 16.5 dB |