Updated November 2026
Data from the official iRobot site.
2026 verdict
Across the 2026 comparison, iRobot Roomba Plus 505 earns the nod over iRobot Roomba Plus 504 on the strength of mopping functionality, auto mop washing, and auto mop drying.
Its biggest wins come from mopping functionality, auto mop washing, and auto mop drying, and its broader overall balance adds more confidence to the verdict. iRobot Roomba Plus 504 is still relevant if you care most about price, rating, and battery life, but iRobot Roomba Plus 505 is the stronger recommendation overall. That keeps the verdict firmly in favor of iRobot Roomba Plus 505.
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| Feature | iRobot Roomba Plus 504 | iRobot Roomba Plus 505 | Winner |
|---|---|---|---|
| Price | $664.99 | $674.99 | iRobot Roomba Plus 504 |
| Rating | 3.7 | 3.3 | iRobot Roomba Plus 504 |
| Battery Life | 210 minutes | 180 minutes | iRobot Roomba Plus 504 |
| Mopping Functionality | NO | YES | iRobot Roomba Plus 505 |
| Auto Mop Washing | NO | YES | iRobot Roomba Plus 505 |
| Auto Mop Drying | NO | YES | iRobot Roomba Plus 505 |
| Warranty | 1 year | 1 year | Tie |
| Auto Recharge | YES | YES | Tie |
| Connectivity | 2.4 GHz WiFi, 5 GHz WiFi | 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 |
$664.99
- + Price: $664.99
- + Rating: 3.7
- + Battery Life: 210 minutes
- - Mopping Functionality: NO vs YES
- - Auto Mop Washing: NO vs YES
Winner
$674.99
- + Mopping Functionality: YES
- + Auto Mop Washing: YES
- + Auto Mop Drying: YES
- - Price: $674.99 vs $664.99
- - Rating: 3.3 vs 3.7
Frequently Asked Questions
Which is better overall: iRobot Roomba Plus 504 or iRobot Roomba Plus 505?
iRobot Roomba Plus 505 has the stronger overall profile in this comparison, especially for mopping functionality, auto mop washing, and auto mop drying.
What is the biggest difference between iRobot Roomba Plus 504 and iRobot Roomba Plus 505?
Price is one of the clearest differences: iRobot Roomba Plus 504 lists $664.99, while iRobot Roomba Plus 505 lists $674.99.
Which one looks better on price?
iRobot Roomba Plus 504 is listed at $664.99, while iRobot Roomba Plus 505 is listed at $674.99. iRobot Roomba Plus 504 (better spec).
Who should buy iRobot Roomba Plus 504?
Choose iRobot Roomba Plus 504 if your priority is price and rating and that matters more than mopping functionality.
Who should buy iRobot Roomba Plus 505?
Choose iRobot Roomba Plus 505 if your priority is mopping functionality and auto mop washing and that matters more than price.
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