Roborock H7 vs LG CordZero A9 [A916, A916BM]: Which Vacuum Is Better?

Tested using Methodology v1.4

Updated Apr 02, 2026 08:09 PM

See LG CordZero A9 [A916, A916BM] Review

Vacuum Type Stick/Handheld

Bagless Yes (Bag Optional)

Wet Compatible No

Cordless Yes

Anti-Allergy Filter (HEPA) Yes

Vacuum Type Stick/Handheld

Bagless Yes

Wet Compatible No

Cordless Yes

Anti-Allergy Filter (HEPA) Yes

Our Verdict

Roborock H7

LG CordZero A9 [A916, A916BM]

The LG CordZero A9 is better than the Roborock H7. The LG feels better built, has fewer parts needing regular cleaning, makes less noise, and delivers better performance on bare floors and low and high-pile carpets. It exerts a stronger suction force at its floorhead and does a better job cleaning debris in cracks. However, the Roborock does weigh a little bit less, and you can use it as a bagged vacuum.

Variants

H7 (Grey/Red)
H7 Pure (Red)

CordZero A9 (A916BM)
CordZero A9 Charge (A905RM)

Review

See Roborock H7 Review

Check Price

Grey/Red

A916BM

CordZero A9

Red

H7 Pure

A905RM

CordZero A9 Charge

A906SM

CordZero A9 Charge Plus

A907GMS

CordZero A9 Ultimate

A908VMR

CordZero A9 Limited

A912PM

CordZero A9

A913BM

CordZero A9

A925KSM

CordZero A9 Kompressor

A926KSM

CordZero A9 Kompressor

A927KGMS

CordZero A9 Kompressor

A927KVMS

CordZero A9 Kompressor

A929KVM

CordZero A9 Kompressor

Notice: Two or more of the products being compared have been tested with different test methodologies. Some of the results aren't directly comparable. Learn how our test benches and scoring system work, and read more about the latest changes to our vacuums test methodology.

Threshold

0.10

House

7.9

No major differences between these vacuums for house. See full list of tests below.

Full Comparison

House

7.9

Small Apartment

8.2

Stairs

8.6

8.2

Cars

7.9

7.7

Bare Floor Pickup

7.5

7.0

Low-Pile Carpet

7.3

Carpet Pickup

7.0

High-Pile Carpet

7.8

Pet Hair Pickup

8.0

Pets

7.5

Air Quality

8.0

Workshop

5.1

Debris Pickup

Hard Floor Pickup

7.0

Hard Floor Pickup video

Hard Floor Pickup Post Test

High-Pile Carpet Pickup

7.0

High-Pile Carpet Pickup Video

High-Pile Carpet Pickup Post Test

Low-Pile Carpet Pickup

7.0

Low-Pile Carpet Pickup Video

Low-Pile Carpet Pickup Post Test

Pet Hair Pickup

8.0

Pet Hair Pickup Video

Pet Hair Pickup Post Test

Pet Hair Furniture Performance

7.5

8.0

Sofa Pickup Video

Sofa Pickup Post Test

Compare High-Res

LG CordZero A9 [A916, A916BM] Sofa Pickup Post Test

Cracks

5.0

7.0

Cracks Video

Wood Cracks Post Test

Compare High-Res

LG CordZero A9 [A916, A916BM] Wood Cracks Post Test

Design

Build Quality

6.0

6.5

Build Quality Picture

Compare High-Res

LG CordZero A9 [A916, A916BM] Build Quality Picture

Vacuum Type

Stick/Handheld

In The Box

In The Box Picture

Compare High-Res

LG CordZero A9 [A916, A916BM] In The Box Picture

Brushroll

Yes

Brushroll On/Off

Removable Brushroll

Yes

Turbo Brush

Yes

Crevice Tool

Yes

Upholstery Tool

Yes

Soft Bristle Brush

Yes

Hard Bristle Brush

Extension Wand

Yes

Ceiling Fan Tool

Pet Grooming Tool

Storing

6.9

8.6

Storing Picture

Compare High-Res

LG CordZero A9 [A916, A916BM] Storing Picture

Height

44.68" (113.5 cm)

36.42" (92.5 cm)

Width

6.30" (16.0 cm)

9.84" (25.0 cm)

Depth

9.84" (25.0 cm)

12.60" (32.0 cm)

Cord Storing

Not Needed

On-Board Tool Storage

Vacuum Rack/Station

Yes

Dirt Compartment Size

6.9

6.5

Dirt Compartment Picture

Compare High-Res

LG CordZero A9 [A916, A916BM] Dirt Compartment Picture

Bagless

Yes (Bag Optional)

Yes

Volume

0.11 gal (0.40 L)

0.09 gal (0.35 L)

Full Indicator

Yes

Bag Included

No Bag Needed

Runtime

8.8

Minimum Runtime

30 min

Maximum Runtime

224 min

Battery

7.2

8.0

Minimum Battery Life

11.1 min

15 min

Maximum Battery Life

91.5 min

112 min

Recharge Time

181 min

372 min

Recharge Dock

Yes

Battery Life Indicator

Yes

Swappable Battery

Yes

User-Serviceable Battery

Yes

Range

Cordless

Yes

Cord Length

N/A

Hose Length

2.26 ft (0.69 m)

N/A

Minimum Wand Length

1.18 ft (0.36 m)

2.59 ft (0.79 m)

Maximum Wand Length

3.22 ft (0.98 m)

Total Range

N/A

User Maintenance

6.5

7.5

Maintenance Picture

Compare High-Res

LG CordZero A9 [A916, A916BM] Maintenance Picture

Brushroll Cleaning Video

Portability

8.2

8.1

Total Weight

5.62 lbs (2.55 kg)

5.97 lbs (2.71 kg)

Weight In Hand

3.42 lbs (1.55 kg)

3.68 lbs (1.67 kg)

Carrying handle

Yes

Recurring Cost

7.0

7.5

Recurring Cost Picture

Compare High-Res

LG CordZero A9 [A916, A916BM] Recurring Cost Picture

Bag Part Number

No bag

Filter Part Number

ASIN: B095393VF2

ADQ75393701

HEPA Filter Part Number

ASIN: B095393VF2

ADQ74773921

Quality Of Life Features

Picture Of Controls

Compare High-Res

LG CordZero A9 [A916, A916BM] Picture Of Controls

Rotating Head

Yes

Power Adjustment

Yes

Self-Propelled

Headlights

Easy On/Off

Yes

Head Surface Type Adjustment

None

Blower Mode

Tools And Brushes

Tools And Brush Picture

Brushroll

Yes

Brushroll On/Off

Removable Brushroll

Yes

Turbo Brush

Yes

Crevice Tool

Yes

Upholstery Tool

Yes

Soft Bristle Brush

Yes

Hard Bristle Brush

Extension Wand

Yes

Ceiling Fan Tool

Pet Grooming Tool

Alternative Configuration

Alternative Configuration Photo 1

Compare High-Res

LG CordZero A9 [A916, A916BM] Alternative Configuration Photo 1

Alternative Configuration Photo 2

Compare High-Res

LG CordZero A9 [A916, A916BM] Alternative Configuration Photo 2

Blower Mode

Automation

Physical Automation

0.0

Automatic Recharging

Automatic Bag Emptying

Pathing Algorithm

No Pathing Algorithm

Physical Boundary Markers

Scheduled Start Buttons

Cycle Control Buttons

Navigation Control Buttons

Companion App Automation

0.0

Companion App Screen Grabs

App Name

No App

iOS Availability

Android Availability

Software Boundary Markers (No Go Zones)

App Scheduled Start

App Cycle Control

Navigation Control within App

Mobility

Portability

8.2

8.1

Total Weight

5.62 lbs (2.55 kg)

5.97 lbs (2.71 kg)

Weight In Hand

3.42 lbs (1.55 kg)

3.68 lbs (1.67 kg)

Carrying Handle

Yes

Maneuverability

7.5

Maneuverability Video

Alternative Configuration

Compare High-Res

LG CordZero A9 [A916, A916BM] Alternative Configuration

Alternative Configuration Photo 2

Compare High-Res

Range

Cordless

Yes

Cord Length

N/A

Hose Length

2.26 ft (0.69 m)

N/A

Minimum Wand Length

1.18 ft (0.36 m)

2.59 ft (0.79 m)

Maximum Wand Length

3.22 ft (0.98 m)

Total Range

N/A

Air Quality

Particle Filtration

9.7

Operation Video

Particle Filtration

Preview Graph

Average PM10 Concentration

0.5 μg/m³

Average PM2.5 Concentration

0.4 μg/m³

Anti-Allergy Filter (HEPA)

Yes

Air Quality During Emptying

4.0

Emptying Video

Performance

Bare Floor Performance (Hardwood, Laminate, Tiles)

8.4

Setting Used

"Standard"

Bare Floor Large Debris Graph

Large Debris at 0 gal (0L)

87%

Large Debris at 0.07 gal (0.25L)

83%

Large Debris at 0.2 gal (0.75L)

N/A

Large Debris at 0.4 gal (1.5L)

N/A

Large Debris at 0.8 gal (3L)

N/A

Large Debris at 1.6 gal (6L)

N/A

Bare Floor Small Debris Graph

Small Debris at 0 gal (0L)

99%

Small Debris at 0.07 gal (0.25L)

100%

Small Debris at 0.2 gal (0.75L)

N/A

Small Debris at 0.4 gal (1.5L)

N/A

Small Debris at 0.8 gal (3L)

N/A

Small Debris at 1.6 gal (6L)

N/A

Low-Pile Carpet Performance

6.8

Setting Used

"Standard"

Low Carpet Large Debris Graph

Large Debris at 0 gal (0L)

63%

Large Debris at 0.07 gal (0.25L)

76%

Large Debris at 0.2 gal (0.75L)

N/A

Large Debris at 0.4 gal (1.5L)

N/A

Large Debris at 0.8 gal (3L)

N/A

Large Debris at 1.6 gal (6L)

N/A

Low Carpet Small Debris Graph

Small Debris at 0 gal (0L)

48%

Small Debris at 0.07 gal (0.25L)

73%

Small Debris at 0.2 gal (0.75L)

N/A

Small Debris at 0.4 gal (1.5L)

N/A

Small Debris at 0.8 gal (3L)

N/A

Small Debris at 1.6 gal (6L)

N/A

High-Pile Carpet Performance

8.5

Setting Used

"Standard"

High Carpet Large Debris Graph

Large Debris at 0 gal (0L)

80%

Large Debris at 0.07 gal (0.25L)

78%

Large Debris at 0.2 gal (0.75L)

N/A

Large Debris at 0.4 gal (1.5L)

N/A

Large Debris at 0.8 gal (3L)

N/A

Large Debris at 1.6 gal (6L)

N/A

High Carpet Small Debris Graph

Small Debris at 0 gal (0L)

73%

Small Debris at 0.07 gal (0.25L)

66%

Small Debris at 0.2 gal (0.75L)

N/A

Small Debris at 0.4 gal (1.5L)

N/A

Small Debris at 0.8 gal (3L)

N/A

Small Debris at 1.6 gal (6L)

N/A

Pet Hair Floor Performance

Pet Hair Graph

Bare Floor

100%

Low-Pile Carpet

100%

High-Pile Carpet

100%

Suction

5.8

6.3

Suction Video

Maximum Hose Suction

67.0 inH₂O (16.68 kPa)

119.0 inH₂O (29.64 kPa)

Maximum Head Suction

2.4 inH₂O (0.60 kPa)

3.1 inH₂O (0.76 kPa)

Normal Head Suction

1.0 inH₂O (0.26 kPa)

1.1 inH₂O (0.27 kPa)

Setting Used For Normal

"Standard"

"Normal Mode", (Power Carpet Nozzle)

Hose Diameter

1.3" (3.2 cm)

1.2" (3.1 cm)

Airflow

5.3

7.0

Maximum Airflow Video

Maximum Hose Airflow

33.5 CFM (0.9 m³/min)

53.6 CFM (1.5 m³/min)

Noise

8.6

8.8

Noise Video

Bare Floor

70.2 dBA

65.8 dBA

Low-Pile Carpet

68.5 dBA

72.0 dBA

Maneuverability

7.5

Maneuverability Video

Pet Hair Furniture Performance

7.5

8.0

Sofa Pickup Video

Sofa Pickup Post Test

Compare High-Res

Air Quality

Sealing Quality Video

Anti-Allergy Filter (HEPA)

Yes

Cracks

5.0

7.0

Cracks Video

Wood Cracks Post Test

Compare High-Res

Stains

3.0

3.5

Stain Video

Stain Pickup Post Test

Compare High-Res

LG CordZero A9 [A916, A916BM] Stain Pickup Post Test

Water

0.0

Wet Compatible

Water Video

Water Pickup Post Test

Compare High-Res

LG CordZero A9 [A916, A916BM] Water Pickup Post Test

Mopping Capabilities

Stains

3.0

3.5

Stain Video

Stain Pickup Post Test

Compare High-Res

Water

0.0

Water Video

Water Pickup Post Test

Compare High-Res

Wet Compatible

Check Price

Grey/Red

A916BM

CordZero A9

Red

H7 Pure

A905RM

CordZero A9 Charge

A906SM

CordZero A9 Charge Plus

A907GMS

CordZero A9 Ultimate

A908VMR

CordZero A9 Limited

A912PM

CordZero A9

A913BM

CordZero A9

A925KSM

CordZero A9 Kompressor

A926KSM

CordZero A9 Kompressor

A927KGMS

CordZero A9 Kompressor

A927KVMS

CordZero A9 Kompressor

A929KVM

CordZero A9 Kompressor