After 3 years and almost 4 months, my vacuum is suddenly not performing as well. When I vacuum, dog hair collects behind the head! I have to go over the rug repeatedly to pick up the fur. Before, it was one pass. I spoke with Tineco and they think dust has gotten inside the motor compartment and is affecting it. I clean my filters after every use. I wash them (Tineco said that was fine), squeeze with a towel and let air dry. I got extra filters and have replaced the HEPA filter though there was no “need” to. I also gently clean the dustbin where stuff collects with a small paint brush. They said I could try a new dustbin to see if the sensor is going. But, if that’s not the case, the machine needs to be replaced. That’s a lot of money for so little time. And, there’s nothing else out there with such great battery life at a light weight. I’m torn.Sorry this is long, but it is a comprehensive review.We purchased this vacuum after A LOT of research and being disappointed with our one year old Shark Apex which kept overheating and shutting off since it was new and we had tried everything to figure out why. It seemed to pick up a lot but you had to wait for it to cool down repeatedly - frustrating. Plus, it is so darn heavy and unruly to move around.We have had a Dyson V6 for many years now and I like the vac. Does a good job on bare floors but not enough battery life to do the whole 1,000 sf downstairs much less carpet or area rugs and the price of the V12 was off-putting - an expensive stick that sucks the battery life when in high power mode. Didn’t think it would be enough to do my 1,200 sf upstairs. Even downstairs, I’ve always had to dry mop first because the battery didn’t last long enough to do the whole downstairs.Was a bit under impressed with the Tineco out of the box when I tested on my bare floors downstairs, but I clean them every other day. Sounded odd but did pick up a bit of dirt and hair from three dogs (and they’ve just started to shed for winter coats). Charged the batteries overnight and decided to test on carpeted upstairs this morning. WOW!!! Just vacuumed with the Shark a couple of days ago and was ASTOUNDED at the dirt it picked up!!! I expected the hair but not the dirt! We vacuum often and used a Bissell Big Green Machine last month! The Tineco got the baseboards immaculate with a couple of passes and the lights help you see! The only downside was I had to empty the cup so many times which really requires you take the stick off. I only took a small bag out of my stash because I didn’t think I’d pick up that much but ... holy moly!!The carpet attachment is effective and no hair clogged it. All that was left was a little dust. The floor attachment holds onto a little dust and hair which a quick swipe on a rug cleans off and vacuums up. And, if you overfill the cup by accident, the ENTIRE filter section comes out with a little twist so you don’t have to take the whole assembly off to clean it out or dig with an old toothbrush!!! I am going to have to use the filter cleaning attachment after what I picked up just this morning! AND, I still have 30% battery left!! I haven’t even touched the SECOND battery!! The battery minder is a great feature so you’re not caught unawares. But, I think I’m going to be obsessed with watching it (haha).Yes, the hard floor attachment makes a noise we don’t associate with vacuuming, but the carpet attachment sounds normal so I know it’s not the machine. And, as far as the “Auto” mode goes, it really works! You think, “This thing can’t be using enough power to pick up much because it’s not making much noise.” (I did see it go up and down in power.) But, the proof is in the bag of yukk that I have. And, no keeping track of a power cord or stopping to plug it in elsewhere! SO easy and maneuverable. Lower profile on the floor attachments than the V6.A bit heavier than the V6 but that has a small battery. I will be able to clean my whole house with these two batteries, including dusting and vacuuming the bed spreads. SO many attachments, I’m not sure I can use them all! Definitely, a win-win!!!I will update as time goes by but, if this tool lasts and keeps cleaning like this, I am a happy camper!!!