Bosch Air 4000 Air Purifier
- 1345 sq ft coverage area
- 3-in-1 filter with a HEPA layer
- 49 dB noise level
- 11.46 x 11.46 x 19.69 inch body
- 8.8 pounds item weight
- ENERGY STAR and CARB certified
- Filter and cord included
Last refreshed Sep 24, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A mid-size HEPA purifier for one large room or a living area, with ENERGY STAR and CARB certification. Control type is shown two ways in the listing, so confirm touch or button before buying.
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ASIN: B0D6HYBZYWModel: Air 4000Category: HEPA Air Purifiers
Overview
Filtering pollen, dust, dander and cigarette smoke, the Bosch Air 4000 uses a three-in-one filter with a HEPA layer in a white body. Smart sensors and an automatic mode setting are described in the listing.
A moderate coverage rating, a lower stated noise level and a lighter body suit a living room or a bedroom. The limitation is missing detail: control type appears as both touch and button, and no filter life is given.
Who it's for
Pet owners and pollen-sensitive households with one main room to clean will find the coverage rating enough. Buyers with a very large open space should check the larger sizes the description mentions.
Pros and cons
- HEPA layer in a three-in-one filter
- Lower stated noise level
- ENERGY STAR and CARB certified
- Power cord included
- Control type listed as both touch and button
- Filter replacement schedule not listed
- Coverage limited to one large room
Performance notes
Air is drawn through a three-in-one filter whose HEPA layer traps fine particles, while the other layers deal with odors and smoke. Coverage depends on the fan moving enough air for the room volume. Smart sensors and the automatic mode adjust running to the air quality, and the fan speed sets how close the noise gets to the stated level.
Specifications
| Brand | Bosch Thermotechnology |
|---|---|
| Model | Air 4000 |
| Dimensions & fit | |
| Item Dimensions D x W x H | 11.46 x 11.46 x 19.69 inches |
| Item weight | 8.8 pounds |
| Capacity & performance | |
| Noise Level | 49 dBhigher than 77% of 48 hepa air purifiers |
| Construction & materials | |
| Color | White |
| Included components | |
| Included Components | Filter, cord |
| Other details | |
| Floor Area | 1345 square feet |
| Filter Type | HEPA layer |
| Filter Class | 3-in-1 filter |
| Contaminant Filtration Capability | Cigarette smoke, dust, odors, pet dander, pollen |
| Specification Met | CARB certified, ENERGY STAR certified |
| Control | Button control |
Closest rivals on specs
Frequently asked questions
What does the Bosch Air 4000 filter out?
The specs list cigarette smoke, dust, odors, pet dander and pollen, and the title adds outdoor pollution.
What is included with the Bosch Air 4000?
The listing names a filter and a cord.
Does the Bosch Air 4000 have touch or button controls?
The listing shows both: the control method says touch and the controller type says button control. Check the product images before buying.