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Bosch Serie 4 Flexxo BBH32101 Review | 52 Data compared

Avg. price in UK: ~£140
Avg. price in US: ~$150
Suction power (AW): ?
Battery runtime: 50 minutes
Capacity: 0.4 L
Weight: 3 kg

Bosch Serie 4 Flexxo BBH32101 review. Compare 52 technical specifications and user reviews to see how this product ranks in the Vacuum Cleaners category and whether it is worth buying.

7.1

Very good

6.7

Good

8.6

Excellent

5.6
Hard floors
Score components:
30.0%
4.0
Mopping support
25.0%
8.8
Weight
20.0%
5.4
Noise level (Min-Max)
15.0%
2.3
Capacity
10.0%
?
Power consumption
4.3
Pet homes
Score components:
30.0%
4.0
Mini motorized brush
25.0%
4.0
Anti-tangle brush
20.0%
2.3
Capacity
15.0%
5.4
Noise level (Min-Max)
10.0%
8.8
Weight

Best prices in UK

Best rankings

#7 in Best Bosch Stick Vacuums
#7 in Best Bosch Cordless Vacuums
#11 in Best Bosch Bagless Vacuums
#14 in Best Bosch Vacuums
#84 in Best Cheap Cordless Stick Vacuums
#85 in Best Cheap Cordless Vacuums
#204 in Best Cordless Stick Vacuums
#211 in Best Cordless Vacuums
#220 in Best Bagless Stick Vacuums
#223 in Best Stick Vacuums
#227 in Best Vacuums For Sofas And Mattresses
#262 in Best Cyclonic Vacuums
#286 in Best Bagless Vacuums
#325 in Best Vacuum Cleaners

Verdict

The Bosch Serie 4 Flexxo BBH32101 is a 2-in-1 cordless stick and detachable handheld vacuum cleaner powered by a 21.6V lithium-ion battery, delivering a maximum runtime of up to 50 minutes with a 5-hour charge time. Weighing 3.0 kg, it features a bagless 0.4-litre dust container supported by the RobustAir system for sustained airflow, alongside a motorized AllFloor Power Brush and accessories integrated directly into the frame. Key advantages include its convenient self-standing design, excellent maneuverability under furniture due to a flexible nozzle joint, and seamless multi-surface cleaning. However, notable drawbacks include its relatively long 5-hour charging process, a lacks an LED floor light, and a small dust capacity that requires frequent emptying.

Technical Specifications of vacuum cleaner Bosch Serie 4 Flexxo BBH32101

Overall score

7.1

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Popularity

What it is: An indicator based on the number of reviews received by the vacuum cleaner.

When it matters: When you prefer a vacuum cleaner that has been chosen and reviewed by many other buyers.

Performance

8.2

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Suction power (AW)

What it is: A measure of usable suction output in air watts, combining airflow and pressure into one cleaning-power figure.

When it matters: When you want the clearest single number for overall cleaning power on carpets and stubborn debris.

Importance: HIGH

?

Suction power (kPa)

What it is: The maximum suction pressure the vacuum can generate, expressed in kilopascals.

When it matters: When you compare how strongly different vacuums can pull dirt from seams, rugs, and tight surfaces.

Importance: HIGH

?

Airflow

What it is: The volume of air the vacuum moves during operation, which helps indicate how effectively debris can be carried into the dust container.

When it matters: When you want better pickup of lighter debris such as dust, crumbs, and hair across larger floor areas.

Importance: HIGH

?

Motor type

What it is: The motor design used to drive suction, such as brushless or universal construction.

When it matters: When you care about motor durability, efficiency, and how modern the vacuum drive system is.

Importance: LOW

longlife

Power consumption

What it is: The amount of electrical power the vacuum draws while operating, measured in watts.

When it matters: When you want to limit electricity use or compare efficiency between vacuums with similar cleaning power.

Importance: LOW

?

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Battery

6.0

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Cordless

What it is: Indicates whether the vacuum can run without being connected to a power cable.

When it matters: When you want to move quickly between rooms, stairs, or cars without trailing a power cord.

Importance: MEDIUM

Battery runtime

What it is: The maximum operating time the vacuum can deliver on a full charge in standard use.

When it matters: When you want to finish your normal cleaning routine on one charge.

Importance: HIGH

Charging time

What it is: The time required to recharge the battery from empty to full.

When it matters: When you need the vacuum ready again quickly after a short cleaning session.

Importance: MEDIUM

Battery capacity

What it is: The total amount of energy or charge the battery can store before recharging is needed.

When it matters: When you want a rough idea of how much stored energy the battery pack holds.

Importance: MEDIUM

Battery voltage

What it is: The nominal electrical voltage supplied by the battery pack.

When it matters: When you compare cordless models and want another clue about battery system strength.

Importance: LOW

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Filtration

6.4

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Filter class

What it is: The filtration standard or class used to describe how finely the vacuum filters outgoing air.

When it matters: When you care about capturing finer dust and keeping the exhaust air cleaner.

Importance: MEDIUM

Minimum overall efficiency

What it is: The minimum particle retention efficiency implied by the stated filter grade.

When it matters: When you want a clearer view of how much fine particulate the filter grade can block at minimum.

Importance: MEDIUM

?

Suitable for allergy sufferers

What it is: Indicates whether the filtration setup is strong enough to make the vacuum more appropriate for allergy-sensitive homes.

When it matters: When someone at home reacts badly to dust and you want a safer filtration setup.

Importance: MEDIUM

Capacity

What it is: The amount of dust or debris the container or bag can hold before it needs to be emptied or replaced.

When it matters: When you want to empty the dust container less often during bigger cleaning jobs.

Importance: MEDIUM

Bagless

What it is: Indicates whether the vacuum collects dirt in a reusable dust container instead of disposable bags.

When it matters: When you prefer not to buy replacement bags and want to empty a reusable bin instead.

Importance: LOW

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Attachments

5.7

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Main brush type

What it is: The construction style of the main floor brush that makes primary contact with the surface being cleaned.

When it matters: When you need the floor head design to match your mix of carpets and hard floors.

Importance: LOW

roll brush

Roller type

What it is: The roller material or profile used to move across the floor and lift debris.

When it matters: When you want the contact surface to suit delicate floors, embedded dirt, or hair pickup better.

Importance: LOW

bristled

Anti-tangle brush

What it is: A brush design intended to reduce hair wrapping and tangling around the roller.

When it matters: When long hair regularly wraps around the brush and you want less manual cleaning.

Importance: LOW

Mini motorized brush

What it is: A small powered cleaning head intended for upholstery, stairs, and concentrated dirt or pet hair.

When it matters: When you clean sofas, stairs, or pet beds where a powered small head works better than a standard nozzle.

Importance: LOW

Suitable for pet owners

What it is: Indicates whether the vacuum is especially suited to homes where pet hair is a regular cleaning concern.

When it matters: When pet hair is one of the main reasons you are buying a vacuum in the first place.

Importance: MEDIUM

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Design

7.8

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Vacuum type

What it is: Identifies the vacuum's overall form factor, such as stick, canister, upright, handheld, or wet-dry.

When it matters: When storage, maneuverability, and your usual cleaning jobs matter more than raw suction numbers.

Importance: LOW

stick

Weight

What it is: The total mass of the vacuum cleaner, which affects carrying comfort and ease of use.

When it matters: When you carry the vacuum upstairs, around the house, or use it for longer sessions.

Importance: MEDIUM

2-in-1 design

What it is: A design that allows the vacuum to be used in two form factors, typically as a stick unit and a handheld unit.

When it matters: When you want one machine to handle both floors and quick handheld jobs.

Importance: LOW

Self-standing

What it is: Indicates whether the vacuum can remain upright on its own without being leaned against support.

When it matters: When you want to pause mid-clean without laying the vacuum on the floor or wall.

Importance: LOW

Adjustable tube height

What it is: Indicates whether the tube length can be adjusted to change reach and handling height.

When it matters: When different users share the vacuum or you want a more comfortable reach.

Importance: LOW

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Smart features

4.0

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Auto suction adjustment

What it is: A function that changes suction automatically based on floor type or detected dirt load.

When it matters: When you want the vacuum to react by itself as you move between floor types or dirt levels.

Importance: LOW

Dust particle sensor

What it is: A sensor that monitors fine debris levels to inform or automate cleaning behavior.

When it matters: When you want extra feedback in dusty rooms instead of relying only on what you can see.

Importance: LOW

LED display

What it is: A built-in illuminated display used to show status information such as battery, mode, or alerts.

When it matters: When you want cleaner status feedback for battery, mode, and warnings at a glance.

Importance: LOW

Nozzle light

What it is: A light built into the cleaning head to improve visibility in dark areas under furniture or along edges.

When it matters: When you vacuum under beds, sofas, or dark corners where hidden dust is easy to miss.

Importance: LOW

Mopping support

What it is: Indicates whether the appliance can also wipe or mop surfaces in addition to vacuuming.

When it matters: When you want one appliance to handle both dry vacuuming and light floor wiping.

Importance: LOW

Bosch Serie 4 Flexxo BBH32101 vs the average vacuum cleaner

Why is Bosch Serie 4 Flexxo BBH32101 better than the average vacuum cleaner?

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Cordless operation
Bosch Serie 4 Flexxo BBH32101 works cordlessly, the average vacuum cleaner does not.
What it is: Indicates whether the vacuum can run without being connected to a power cable.
When it matters: When you want to move quickly between rooms, stairs, or cars without trailing a power cord.
Importance: MEDIUM
Bosch Serie 4 Flexxo BBH32101 works cordlessly, the average vacuum cleaner does not.
Self-standing design
Bosch Serie 4 Flexxo BBH32101 stands on its own, the average vacuum cleaner does not.
What it is: Indicates whether the vacuum can remain upright on its own without being leaned against support.
When it matters: When you want to pause mid-clean without laying the vacuum on the floor or wall.
Importance: LOW
Bosch Serie 4 Flexxo BBH32101 stands on its own, the average vacuum cleaner does not.
Includes battery indicator
Bosch Serie 4 Flexxo BBH32101 includes a battery level indicator, the average vacuum cleaner does not.
What it is: A visual signal that shows the remaining charge state of the battery.
When it matters: When you want to know how much cleaning time is left before the battery runs out.
Importance: LOW
Bosch Serie 4 Flexxo BBH32101 includes a battery level indicator, the average vacuum cleaner does not.
85 mm shallower body
Bosch Serie 4 Flexxo BBH32101 is less deep than the average vacuum cleaner (180 mm vs 265 mm).
What it is: The front-to-back measurement of the vacuum body or main assembly.
When it matters: When front-to-back size affects where the vacuum can be stored or parked.
Importance: LOW
Bosch Serie 4 Flexxo BBH32101 is less deep than the average vacuum cleaner (180 mm vs 265 mm).180 mm vs 265 mm
14.8% lower weight
Bosch Serie 4 Flexxo BBH32101 is lighter than the average vacuum cleaner (3 kg vs 3.52 kg).
What it is: The total mass of the vacuum cleaner, which affects carrying comfort and ease of use.
When it matters: When you carry the vacuum upstairs, around the house, or use it for longer sessions.
Importance: MEDIUM
Bosch Serie 4 Flexxo BBH32101 is lighter than the average vacuum cleaner (3 kg vs 3.52 kg).3 kg vs 3.52 kg
7.5% higher user score
Bosch Serie 4 Flexxo BBH32101 has a higher user score than the average vacuum cleaner (8.6 vs 8).
What it is: A rating that combines user reviews with the total number of reviews received by the vacuum cleaner.
When it matters: When you want to know how a vacuum cleaner performs in everyday use and how reliable owners find it over time.
Bosch Serie 4 Flexxo BBH32101 has a higher user score than the average vacuum cleaner (8.6 vs 8).8.6 vs 8
Cordless operation
Bosch Serie 4 Flexxo BBH32101 works cordlessly, the average vacuum cleaner does not.
Includes battery indicator
Bosch Serie 4 Flexxo BBH32101 includes a battery level indicator, the average vacuum cleaner does not.
Self-standing design
Bosch Serie 4 Flexxo BBH32101 stands on its own, the average vacuum cleaner does not.
85 mm shallower body
Bosch Serie 4 Flexxo BBH32101 is less deep than the average vacuum cleaner (180 mm vs 265 mm).
14.8% lower weight
Bosch Serie 4 Flexxo BBH32101 is lighter than the average vacuum cleaner (3 kg vs 3.52 kg).

Why is Bosch Serie 4 Flexxo BBH32101 worse than the average vacuum cleaner?

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Louder operation
Bosch Serie 4 Flexxo BBH32101 is noisier than the average vacuum cleaner (82-82 dB vs 77-77 dB).
1 hours slower charging
Bosch Serie 4 Flexxo BBH32101 charges slower than the average vacuum cleaner (5 hours vs 4 hours).
20% smaller battery capacity
Bosch Serie 4 Flexxo BBH32101 has a smaller battery capacity than the average vacuum cleaner (2000 mAh vs 2500 mAh).
0.6 V lower voltage
Bosch Serie 4 Flexxo BBH32101 has a lower battery voltage than the average vacuum cleaner (21.6 V vs 22.2 V).
0.6 L smaller dust bin
Bosch Serie 4 Flexxo BBH32101 has a smaller dust capacity than the average vacuum cleaner (0.4 L vs 1 L).
Not allergy-friendly
Bosch Serie 4 Flexxo BBH32101 is not suitable for allergy sufferers, the average vacuum cleaner is.
Not pet-hair friendly
Bosch Serie 4 Flexxo BBH32101 is not suitable for pet owners, the average vacuum cleaner is.
Older release date
Bosch Serie 4 Flexxo BBH32101 has an older release date than the average vacuum cleaner (2019 vs 2021).
Released in August 2019.
40 mm taller body
Bosch Serie 4 Flexxo BBH32101 is taller than the average vacuum cleaner (1150 mm vs 1110 mm).
Louder operation
Bosch Serie 4 Flexxo BBH32101 is noisier than the average vacuum cleaner (82-82 dB vs 77-77 dB).
What it is: The operating sound range of the vacuum across its available modes, measured in decibels.
When it matters: When you clean in apartments, around children, or at night and want a quieter machine.
Importance: HIGH
Bosch Serie 4 Flexxo BBH32101 is noisier than the average vacuum cleaner (82-82 dB vs 77-77 dB).82-82 dB vs 77-77 dB
0.6 L smaller dust bin
Bosch Serie 4 Flexxo BBH32101 has a smaller dust capacity than the average vacuum cleaner (0.4 L vs 1 L).
What it is: The amount of dust or debris the container or bag can hold before it needs to be emptied or replaced.
When it matters: When you want to empty the dust container less often during bigger cleaning jobs.
Importance: MEDIUM
Bosch Serie 4 Flexxo BBH32101 has a smaller dust capacity than the average vacuum cleaner (0.4 L vs 1 L).0.4 L vs 1 L
1 hours slower charging
Bosch Serie 4 Flexxo BBH32101 charges slower than the average vacuum cleaner (5 hours vs 4 hours).
What it is: The time required to recharge the battery from empty to full.
When it matters: When you need the vacuum ready again quickly after a short cleaning session.
Importance: MEDIUM
Bosch Serie 4 Flexxo BBH32101 charges slower than the average vacuum cleaner (5 hours vs 4 hours).5 hours vs 4 hours
20% smaller battery capacity
Bosch Serie 4 Flexxo BBH32101 has a smaller battery capacity than the average vacuum cleaner (2000 mAh vs 2500 mAh).
What it is: The total amount of energy or charge the battery can store before recharging is needed.
When it matters: When you want a rough idea of how much stored energy the battery pack holds.
Importance: MEDIUM
Bosch Serie 4 Flexxo BBH32101 has a smaller battery capacity than the average vacuum cleaner (2000 mAh vs 2500 mAh).2000 mAh vs 2500 mAh
Not pet-hair friendly
Bosch Serie 4 Flexxo BBH32101 is not suitable for pet owners, the average vacuum cleaner is.
What it is: Indicates whether the vacuum is especially suited to homes where pet hair is a regular cleaning concern.
When it matters: When pet hair is one of the main reasons you are buying a vacuum in the first place.
Importance: MEDIUM
Bosch Serie 4 Flexxo BBH32101 is not suitable for pet owners, the average vacuum cleaner is.
Not allergy-friendly
Bosch Serie 4 Flexxo BBH32101 is not suitable for allergy sufferers, the average vacuum cleaner is.
What it is: Indicates whether the filtration setup is strong enough to make the vacuum more appropriate for allergy-sensitive homes.
When it matters: When someone at home reacts badly to dust and you want a safer filtration setup.
Importance: MEDIUM
Bosch Serie 4 Flexxo BBH32101 is not suitable for allergy sufferers, the average vacuum cleaner is.
0.6 V lower voltage
Bosch Serie 4 Flexxo BBH32101 has a lower battery voltage than the average vacuum cleaner (21.6 V vs 22.2 V).
What it is: The nominal electrical voltage supplied by the battery pack.
When it matters: When you compare cordless models and want another clue about battery system strength.
Importance: LOW
Bosch Serie 4 Flexxo BBH32101 has a lower battery voltage than the average vacuum cleaner (21.6 V vs 22.2 V).21.6 V vs 22.2 V
Older release date
Bosch Serie 4 Flexxo BBH32101 has an older release date than the average vacuum cleaner (2019 vs 2021).
Released in August 2019.
What it is: The date when the vacuum model was first announced or introduced to the market.
When it matters: When you want a newer model with more recent battery, motor, or feature updates.
Importance: LOW
Bosch Serie 4 Flexxo BBH32101 has an older release date than the average vacuum cleaner (2019 vs 2021).2019 vs 2021

Graphic comparison of Bosch Serie 4 Flexxo BBH32101 and other vacuum cleaners

Attribute category

Attribute

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Third-party reviews

United Kingdom

(Reviews last updated: July 2026)

What customers like about Bosch Serie 4 Flexxo BBH32101?

Lightweight design makes it easy to carry and ideal for stairs
Excellent maneuverability and smooth handling around corners
Convenient 2-in-1 functionality with a built-in detachable handheld unit
Integrated onboard tool storage keeps accessories close at hand
Good battery runtime on normal settings for quick daily cleaning
Attractive, sleek, and modern design

What customers dislike about Bosch Serie 4 Flexxo BBH32101?

Small dust bin capacity (0.4L) requires frequent emptying
Dust container and filter can be fiddly or difficult to clean and empty
Suction power may not be as efficient or powerful as a corded vacuum
The internal battery is not easily replaceable by the user
Certain plastic components and handles feel a bit flimsy or low-quality
Difficulty storing the extension tool back into its dedicated slot on the machine
Harder to vacuum flat or deep underneath low furniture due to the body shape

Expert reviews

whichvac.com

Date unknown

Summary of the review

Bosch Flexxo Serie 4 Review – Tested at Home. Read the full review at WhichVac.

The Bosch Flexxo Serie 4 is a durable 2-in-1 cordless vacuum offering strong, consistent suction via its RobustAir system and an effective, independent motorized brush, as highlighted in the WhichVac review. It provides excellent battery life and convenient, freestanding storage that minimizes hand fatigue, though its rigid design limits maneuverability compared to lighter models. Potential drawbacks include reliance on the battery-draining Turbo mode for tougher debris and a slightly lower overall power output compared to the top performers in its class.

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