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iRobot Roomba 870 Robotic Vacuum Cleaner
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- iAdapt Navigation uses a full suite of sensors to navigate and adapt to your changing home
- AeroForce 3-Stage Cleaning System delivers up to 50% more cleaning performance
- Tangle-free extractors help prevent hair and debris clogs
- AeroForce High-Efficiency Filter traps fine dirt and dust
- Conveniently schedule up to 7x per week, or just press CLEAN on the robot
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Experience a deeper clean every day with the Roomba 870 Vacuum Cleaning Robot. Featuring the revolutionary AeroForce Cleaning System, Roomba 870 delivers up to 5x the air power and requires less maintenance. Just press clean or schedule Roomba to run up to 7x per week. Roomba works on all floor types, and at just 3.6 inch tall, is specifically designed to fit under most furniture, beds and kickboards.
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Let's start with the 650, not this product (obviously) but to give a little context. The 650 is slightly smaller than the 870, it's pretty powerful and has a decent battery life. We set the schedule (which is very easy to do) for our 650 to begin patrolling at 9:15 am and let it get on with things. Each day we empty the bin and each day it refills it. The battery on the 650 lasts for around an hour, maybe 75 minutes. It's long enough for the robot to cover a few thousand square feet and pick up a full bin of dust and dirt. It's small enough to get under most items of furniture, sofas, tables, etc. We do have a few items that it can't get under, but I just move those once a week and let it get to work.
The 650 uses brushes and bristles, it works solidly, although you will want a few spares to swap out. Also, you will want replacement filters as they get dirty very quickly, no matter how clean you think your home is.
We have children and find that we need to go around each evening to make sure they've not left anything small on the floor, as the Roombas are indiscriminating and will happily suck up necklaces, toys and other items. On the plus side we've also found that telling the kids the robot is going to eat their toys is a great motivator to get them to clean up!
The 650 finds its way back to the dock most, but not all days. Probably twice a week we need to play 'hunt the Roomba'. Sometimes it wanders in to a room and accidentally shuts the door after it, resulting in one very clean room, an exhausted robot and dust everywhere else. In these instances we simply put him back on charge, give him a rest for a little while then set him loose again.
Overall the 650 is a good starter-robot, recommended for those wanting to dip their toes in to the robot market without splurging big bucks.
Now, the 870. Slightly larger than the 650, it has a larger bin, better (HEPA) filters and an improved guidance and sensor system. The 650 will hit walls and furniture with a solid bump, not so the 870 which has more of a delicate touch.
The 870 also has a slightly better battery life, I would say that it gets around 75 minutes on average, extending up to 90 if it's feeling particularly dedicated that day. The biggest difference, however, are the brushes - the 870 uses rubber brushers with no bristles, you would have thought that this makes it a worse vacuum than the 650 which employs a roller and bristle combination, but the opposite is true. Thanks to its improved vacuum power and brush system the 870 picks up dirt and dust like you wouldn't believe. In addition to the kids we also have 2 birds and a dog and every day our faithful 870 runs on his schedule (again, very easy to set up) and collects dog hair and dirt like a demon. He almost always finds his way back to his dock, probably 90% of the time.
The HEPA filter is great, but you will want additional filters to swap out as they collect dust very quickly. The new filters from iRobot are better than the stock ones that the Roomba comes with, and if you register your robot online with iRobot they will send you two extra filters for free.
The 870 also has a 'bin full' indicator, which is handy because the passage for the dirt to travel through to get in to the bin is smaller than in the 650. This is good because it increases suction and results in a more thorough clean, but bad because it's a smaller gap for dust to bottleneck in. You will want to empty this bin and clean out the filter every day to keep your robot running nicely!
Summary: We love both our 650 and 870. There are pros and cons to both. If you're not shy of spending money and you want a thorough clean, then stretch to the 870, it's worth it. If you're just exploring how our robotic friends will be helping us stay clean in future and want cleaner floors then the 650 is a perfectly good starting point.
At my age (70+) it gets a little tough to push around my heavy duty commercial upright ... the Roomba works like a dream ... two bedrooms, dining room, living room, kitchen filled up the tank the first two times, then a little less each run after that ... I hit the clean button about twice a week. I do have to stack as much as I can to leave the floor as open as possible (the couch looks a little odd with chair and baskets stacked on it) ... I try to leave the width of the Roomba around any piece of furniture.
So far, one of the best purchases I've ever made.
TL;DR Convenient, great results for pets, hardwood and carpet, but navigates poorly. For large homes its worth the investment in 880 model.
On carpet this robot was awesome, it took about a week for it to catch up to my pet fur (which is what iRobot states in their manual). The results were great afterwards, better air quality, and for my girlfriend who has allergies a little extra relief. It extracted cat litter from carpet well. It left track marks in diagonals, if you're bothered by that sort of thing.
On hardwood the robot works fairly well. I have been putting it near the cat litter box to pick up all the litter and dust that gets everywhere. The robot picks up about %90 of the litter or dust on its first pass over a pile. It picks up general dust at about the same rate. It picks up cat fur extremely well however, and this is the biggest thing for us to keep up with. Running this daily, and doing a detail sweep once a week has kept our air quality in the house up to my other half's standards.
Tile, this robot fails at. Due to the slight texture of the tile and the grout the robot mostly just moves dirt around.It picked up some large objects when I was testing it out. Styrofoam balls or things larger in size it was able It picked up cat fur as well. What disappointed me was it pushed cat litter around, and made more of a spreading litter and dust in our bathroom. I've put the virtual walls on the entrance to our foyer and bathroom.
The navigation is frustrating. It has trouble finding its way back to dock in my home and frequently ends up dying in a random spot. I had to move the roomba to my master bedroom because it would have trouble making it into that room to clean, or would get stuck there and not return to its dock. Its pretty upsetting that the manual shows the lighthouses as an accessory for this model, but the robot itself isn't equipped with the correct technology for it. I'd invest the extra $ in the lighthouse to know that the robot will make it to each room daily.
The robot design itself is great. The maintenance schedule is easy to keep up with, and the parts are inexpensive to replace (especially from third party sellers). The maintenance doesn't require any mechanical knowledge, only basic hand tools (screwdriver). The booklet provides detailed instructions to all the maintenance. The rotating brush sweeps debris into the path of the extractors. The extractors are designed well and pick up even fine dust. When the robot picks up a lot of dust, or large debris it automatically "spot cleans" by going in a circle about 3ft. The robot is small enough that it gets underneath almost all of my furniture (at least the stuff that the cats go under too). It automatically senses the stairs when I run it upstairs, and doesn't fall off. It doesn't make a lot of noise, maybe about 50-60 decibels. Its about the same amount of noise as a dishwasher. It's a little distracting while watching tv, but you can set its schedule to run while you're away.
The device doesn't require a lot of changes to be made to your routine or household. I have made some changes to the wires on our sleep number bed (zip tied) to prevent it from unplugging them, and I pick up all the cat toys before it runs when its scheduled. I'd rather it run while I'm not home so I don't have to acknowledge the random navigation, but without my help Roomba will suck up my cat's mouse toys and get stranded asking me to check the extractors.
I haven't noticed a large spike in our electric bills as a result of this. I'll be testing its power usage with a WeMo insight switch shortly (currently testing a room fan for summer). I'll update with the results of my test.