Irobot Roomba S9 Plus vs Ecovacs Deebot 661

Robovac to replace

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Roomba S9 Plus

2200 Pa | No Mop

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Deebot 661

Wet Mop

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On the market

Irobot Roomba S9 Plus: on the market for 7 years, 4 months

Ecovacs Deebot 661: on the market for 7 years

Irobot Roomba S9 Plus vs Ecovacs Deebot 661 Robovac Comparison

In this review, we will be comparing two different type of robovacs: Roomba S9 Plus is a dry type whereas Deebot 661 is a wet mop robovac.

Let's have a brief look at the main features of Irobot Roomba S9 Plus and Ecovacs Deebot 661 before getting into our more detailed comparison.

Roomba S9 Plus Key Specs

2200 Pa Suction Power

Dry type cleaner

120 min. Run Time

Height: 9.2 cm

Weight: 3.37 kg

Deebot 661 Key Specs

Wet Mop type cleaner

110 min. Run Time

Height: 7.8 cm

Weight: 3.40 kg

Let's read on the following sections in order to better understand in detail how Roomba S9 Plus and Deebot 661 compares and hopefully end up with enough arguments to decide which one is better for you.

**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Roomba S9 Plus over Deebot 661

Run Time	120 min. vs 110 min.	Longer Run
Robovac Weight	3.37 kg vs 3.40 kg	0.03 kg Lighter
HEPA Filter	Yes vs None

Reasons to choose Deebot 661 over Roomba S9 Plus

Wet Mopping	Wet Mop vs Dry Type	Better Cleaning Functions
Robovac Height	7.8 cm vs 9.2 cm	Better for low height furniture
Dustbin Capacity	520 ml vs 400 ml	Bigger Dustbin

Roomba S9 Plus vs Deebot 661 Specs Table

Detailed comparison of specifications

General
Brand	Irobot	Ecovacs
Robovac Type	Dry Type	Wet Mop Type
Released in	2019	2019
Battery Capacity	3300 mAH	2600 mAH
Run Time	120 min	110 min
LCD Display
Side Brushes	1	2
Physical Specs
Robot Height	9.2 cm	7.8 cm
Robot Width	33.88 cm	33.20 cm
Weight	3.37 kg	3.40 kg
	7.43 lbs	7.50 lbs
Dustbin Capacity	400 ml	520 ml
Sensors
Dirt Detection
Anti Drop Sensor
Dustbin Full Indicator
Filters & MOP
Washable Filter
HEPA Filter
Advanced Features
Auto Docking and Recharging
Automatic Dirt Disposal
Remote Control
Virtual Walls
Manual Movement Control
Carpet Boost
App Features
Smartphone App
Scheduling
Zone Cleaning
Multi Floor Maps
Path Planning
Selected Room Cleaning
Real Time Tracking
Digital Blocked Area
Connectivity
Voice Control
Amazon Alexa Support
Google Assistant Support
Other
Warranty	12 months	12 months

Frequently Asked Questions

The Ecovacs Deebot 661 does; the Irobot Roomba S9 Plus is vacuum-only and doesn't include mopping.

The Irobot Roomba S9 Plus does; the Ecovacs Deebot 661 doesn't, so its dustbin has to be emptied by hand.

The Irobot Roomba S9 Plus does; the Ecovacs Deebot 661 doesn't use a HEPA filter.

The Irobot Roomba S9 Plus can; the Ecovacs Deebot 661 only stores a single floor map.

The Irobot Roomba S9 Plus does; the Ecovacs Deebot 661 doesn't have automatic carpet boost.

The Irobot Roomba S9 Plus, at 120 min vs 110 min.

The Ecovacs Deebot 661, at 520 ml vs 400 ml.

The Irobot Roomba S9 Plus, at 3.37 kg vs 3.4 kg.

The Ecovacs Deebot 661, at 7.8 cm vs 9.2 cm.

Yes, both the Irobot Roomba S9 Plus and the Ecovacs Deebot 661 can be controlled and scheduled through a companion app.

Yes, both the Irobot Roomba S9 Plus and the Ecovacs Deebot 661 return to their dock on their own to recharge.

Yes, both the Irobot Roomba S9 Plus and the Ecovacs Deebot 661 work with Amazon Alexa and/or Google Assistant.