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| Feature | iRobot Roomba 705X | iRobot Roomba Plus 505 | Winner |
|---|---|---|---|
| Price | $699.99 | $695.00 | iRobot Roomba Plus 505 |
| Rating | 4.3 | 4.2 | iRobot Roomba 705X |
| Battery Life | 120 minutes | 180 minutes | iRobot Roomba Plus 505 |
| Suction Power | 13000Pa | 7000Pa | iRobot Roomba 705X |
| Warranty | 1 year | 1 year | Tie |
| Auto Recharge | YES | YES | Tie |
| Connectivity | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Navigation Type | Laser (LiDAR) | Laser (LiDAR) | Tie |
| Obstacle Detection | YES | YES | Tie |
| Cliff Detection | YES | YES | Tie |
| Multi-Room Mapping | YES | YES | Tie |
What the differences mean
Battery life
The iRobot Roomba Plus 505 is rated for 180 minutes per charge, the iRobot Roomba 705X for 120. Both recharge and resume on their own, so the practical effect shows up in larger homes: the shorter battery is more likely to pause a job, drive back to the dock and finish it after a top-up.
Suction
The iRobot Roomba 705X is rated at 13,000 Pa and the iRobot Roomba Plus 505 at 7,000 Pa. On bare floors both clear everyday dust, but the 705X has more pull in reserve for carpet and embedded pet hair, which is what its spec-sheet win rests on.
How they mop
The iRobot Roomba 705X uses a PowerSpin roller mop at 200 RPM with automatic cleaning solution dispensing. The iRobot Roomba Plus 505 uses spinning mop pads, washes and heat-dries them at the dock, but has no automatic detergent dispenser, so any solution goes in by hand.
Weight and dock
The iRobot Roomba Plus 505 is the lighter setup: about 4.3 kg for the robot and 6.3 kg for the dock. The iRobot Roomba 705X weighs about 12.61 lb and its AutoWash station about 18.67 lb, a heavier base that wants a sturdier spot with room around it.
Which one to buy if
- the job has to finish on one charge in a larger home
The iRobot Roomba Plus 505 is rated for 180 minutes, against 120 on the iRobot Roomba 705X.
- carpet and embedded pet hair are the main target
The iRobot Roomba 705X is rated at 13,000 Pa against 7,000 Pa, and it raises suction on carpet.
- you want a roller mop that doses its own detergent
The iRobot Roomba 705X dispenses cleaning solution on its own, which the iRobot Roomba Plus 505 does not.
- you want the lower outlay for a hands-off dock
The iRobot Roomba Plus 505 is the more affordable of the pair and still empties, washes and dries without help.
- + Rating: 4.3
- + Suction Power: 13000Pa
- - Price: $699.99 vs $695.00
- - Battery Life: 120 minutes vs 180 minutes
- + Price: $695.00
- + Battery Life: 180 minutes
- - Rating: 4.2 vs 4.3
- - Suction Power: 7000Pa vs 13000Pa
What owners say
The only owner reviews in this pair belong to the iRobot Roomba Plus 505, and they centre on mapping and pet hair. Owners describe a LiDAR map that comes together quickly and stays accurate across rooms, strong pickup of dog and cat hair on hardwood and carpet, and an AutoWash dock that empties the bin and washes and dries the mop pads so the routine stays hands-off. The recurring complaint is noise: several owners say it runs louder than expected, especially while the dock is cleaning itself, and a handful report navigation or bumper errors appearing after a few months. Several stress buying from iRobot or an authorized seller, since warranty support proved hard for owners who bought through third-party sellers.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- iRobot Roomba 705X
- iRobot Roomba Plus 505
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Frequently Asked Questions
Which is better overall: iRobot Roomba 705X or iRobot Roomba Plus 505?
The iRobot Roomba Plus 505, on battery life and price. It runs longer and costs less. The iRobot Roomba 705X is the stronger vacuum, rated at 13,000 Pa against 7,000 Pa, with a PowerSpin roller mop its dock doses with detergent.
What is the biggest difference between the iRobot Roomba 705X and the iRobot Roomba Plus 505?
Runtime and suction, pulling opposite ways. The iRobot Roomba Plus 505 is rated for 180 minutes against 120, while the iRobot Roomba 705X is rated at 13,000 Pa against 7,000 Pa. Both self-empty and both wash and dry their mops at the dock.
How does the iRobot Roomba 705X mop compared with the iRobot Roomba Plus 505?
The iRobot Roomba 705X uses a PowerSpin roller that spins at 200 RPM and dispenses cleaning solution automatically. The iRobot Roomba Plus 505 uses spinning pads washed and heat-dried at the dock, but has no automatic detergent dispenser.
Do the iRobot Roomba 705X and the iRobot Roomba Plus 505 work with Apple Home and Matter?
Both do. The iRobot Roomba 705X and the iRobot Roomba Plus 505 work with Alexa, Google Home, Apple Home through Matter, Samsung SmartThings, Home Assistant and Matter.
Who should buy the iRobot Roomba Plus 505?
Homes with an open floor plan that want the longest run on a charge, a lighter dock and the lower outlay, without giving up self-emptying or mop washing.
Who should buy the iRobot Roomba 705X?
Buyers who want the strongest suction of the two, a self-dosing roller mop and full smart-home support, and who do not mind the shorter battery or the heavier AutoWash station.
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