Roborock S8 Review 2025: Suction Power, Budget Trade-Offs, and the Real Maintenance Questions

Look, I don't run a review lab. I coordinate equipment replacements for a vacation rental management company. That means when a robot vacuum dies on a Friday afternoon, I'm the one scrambling to find a replacement before Saturday check-ins. Over the last four years, I've handled more than 300 rush replacements. In March 2024, 36 hours before a group of 18 guests arrived, three of our units needed vacuums at once. It took me four years and those 300 emergency orders to understand something simple: navigation beats suction.

These are the questions I actually get from owners, housekeepers, and friends who want a straight answer.

1. Is the Roborock S8 worth it in 2025?

Probably, for most people. But not for everyone, and I'm tired of pretending otherwise.

The Roborock S8 has been our workhorse for mid-size properties with hard floors and low-pile carpet. In my role coordinating replacements, I've seen which robots come back for warranty claims and which ones just keep working. The S8 rarely gets stuck, its mapping is genuinely good, and the combination vacuum-and-mop setup handles daily maintenance without much drama. For us, a model with a self-emptying dock matters too, because housekeeping schedules don't have time to obsess over a dirty bin.

Here's the honest limitation: the S8 is not ideal for high-pile carpet, homes with a lot of transitions, or spaces where 'mopping' means deep cleaning a dirty tile floor. The mop is for maintenance, not restoration. If that's what you need, keep looking. If your floors are mostly hard surfaces with low-pile rugs, you're probably in the 80% of cases where the S8 is a solid fit.

So when people ask for a 'best robot vacuum,' I push back. There's no best. There's a match between your floors, your free time, and your expectations. For most of our units, the Roborock S8 is that match.

2. How much Roborock robot vacuum suction power do you really need?

Roborock robot vacuum suction power is the spec everyone wants to compare. The base Roborock S8 is rated around 6,000 Pa, according to Roborock's published specs as of January 2025. That number sounds serious. It is enough for hard floors and most carpets. But I'm not a mechanical engineer, so I can't explain the motor design. What I can tell you from a facilities standpoint is that suction alone won't save a robot with bad navigation.

We've tested cheaper robots with high Pa numbers that still left fine dust along the baseboards. The brush never made good contact, or the robot just skipped strips of floor. A robot with 4,000 Pa and good lidar will clean more of a room than one with 6,000 Pa and random bump navigation. Honestly, I wish I'd tracked that data more carefully in our trial orders. Anecdotally, cleaning performance improved more when we upgraded navigation than when we upgraded suction.

The S8's app also lets you adjust suction by room, which is more useful than a single big number. You can run high suction on carpets and a quieter mode on hard floors. That's the kind of practical detail that makes a vacuum feel smart.

3. Is the Lefant M210 Pro robot vacuum worth considering?

The Lefant M210 Pro robot vacuum gets asked about a lot because it's cheap. I understand. Not everyone wants to spend a lot on a robot vacuum. The M210 Pro is compact and basic, and for a small apartment with hard floors and no pets, it can be fine. If that's your situation, you might save money and be happy.

But after a few budget robot vacuum trials, we stopped using them in rentals. Not because they're terrible, but because their navigation is less predictable. We bought three Lefant units once for our smallest properties. Two were okay. One kept losing connection. I don't have hard data on defect rates, and our sample size was tiny, so I won't say 'never buy it.' I'll say this: if the M210 Pro is your backup for a studio, it's probably fine. If you need a workhorse for a busy home or rental, get something with mapping and better obstacle avoidance.

The price difference between the Lefant M210 Pro and a Roborock S8 isn't small. But the real cost difference appears when a cheap robot gets stuck, misses a room, or dies too soon. That's when you do an emergency replacement, and emergency replacements are rarely cheap.

4. Do you still need a stick vacuum? And what about Dyson stick vacuum filter cleaning?

Yes, you still need a stick vacuum. The Roborock S8 is good, but it won't handle stairs, a couch, or a car. We keep a cordless stick vacuum in every supply closet for those moments. If you own a Dyson, please don't ignore Dyson stick vacuum filter cleaning.

Here's the thing: a clogged filter kills suction faster than you'd believe. Dyson's washable filter should be cleaned every one to three months, depending on use. We do it monthly because our crew runs the V11 daily. Use cold water, not hot. Squeeze out the water gently, and never twist the filter. Then let it air-dry completely, for at least 24 hours. A damp filter makes the vacuum smell and kills performance. We learned that the hard way when a housekeeper washed a filter the night before a big check-in, and the next morning the vacuum smelled like a wet rag. Now we rotate filters so there's always a dry one ready.

5. What is the best washing machine brand?

I get asked this more than I expected when people find out I deal with rental appliances. What is the best washing machine brand? My honest answer: there isn't one. There are solid models from LG, Samsung, Speed Queen, and even Whirlpool that have outperformed units that cost twice as much. The brand alone doesn't tell you what matters for your situation.

What matters more is local service. A machine can be great on paper, but if your local repair shop can't get parts for it, a small issue becomes a two-week headache. In 2023, we picked a specific LG model for one property because the local parts supplier had the drive belt in stock. That's not a glamorous reason, but it saved us.

I'm not a repair technician, so I can't speak to the technical side of washers. What I can tell you from coordinating replacements is: ask a local appliance repair company which brands they see least often, then check the model's service availability. That's more useful than any 'best washing machine' list.

6. What's the one thing people overlook when buying a robot vacuum?

Maintenance. Not the app, not the suction, not the price. Maintenance.

A robot vacuum is a floor dust collector that lives under furniture. If you never empty the bin, clean the brushes, or replace the filter, a $1,000 robot will eventually clean like a $100 robot. In late 2024, I compared two Roborock S8 units in identical apartments. One got filter changes every two months. The other ran for five months with a reminder nobody acted on. When we sprinkled flour on the floor, the maintained unit finished in one pass. The other one pushed flour around before it picked it up. Seeing that side by side made me realize maintenance is the real upgrade.

So when you read a Roborock S8 review 2025, take the 'set it and forget it' line with a grain of salt. The robot will not forget. You will need to spend five minutes per week emptying the bin, wiping sensors, and checking the brushroll. That's the trade-off for clean floors. Simple.