Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: How does it perform on wood floors? Are there adjustments to carpet heights?
Document: Other reviews have mentioned that it is a heavy machine, but I don't think it is any heavier than any other vacuums I have owned and besides, the weight helps it stay in place while I use the hand held attachments. The rubber wheels are great for my hard wood floors, too. No worry about scratching.BTW - in some pictures, the vacuum looks bright yellow and in the video, it appears to be a pale yellow.
It's a little heavy, but I can wrangle it up and down stairs without problems. THe on-board tools are of really good quality, and the hose is surprisingly long and handy to use. There are a lot of suction/profile choices - maybe too many for me - but when you get it going, it grabs stuff that the last two machines would have left behind - like birdseed in the cracks of the wood floors, for instance, and detritus on the LL Bean doormat.
Throw out your Dyson's, Kenmore's, Eurek's, and Hoover's this is the best suction you will ever experience in a light weight vacuum. Dog hair, stairs, tile, wood floors, furniture, car, and yes my garage floor is no challenge for this vacuum. I am extremely happy with this new vacuum and recommend it to everyone.Another bonus was a great surprise the reseller of this vacuum came from the Vacuum Center family owned and operated sine 1978 by the Brownfield's of Gilroy CA.
I find it to be quite nimble and easy to maneuver. The integrated casters and smooth bottom plate work well to make it glide over thick and thin carpet alike. It rolls even easier on hard floors.
Love everything about it, the color, it swivels easily an is slim enough to fit under most furniture saves me from having to move heavy pieces. It picks up the dirt on hard floors as well as carpet. Well made I can't say enough about this vacuum. I would highly recommend it.
I brought home my brand new Jazz from a local dealer CMW Central Vacuums.Started using it when I got home after reviewing the manual. The vacuum works great, from continuous medium pile carpet, to low pile to my bare floors it got it all. Very maneuverable, and quiet.
Here is the deal: In order to deep clean carpet on stairs, the carpet requires the same agitator action that deep cleans the carpet on the floor. If you are going to get you stairs as clean as your floors, the brushes need to be doing the same thing - that is stirring up the crud - so it can be vacuumed up. If the brushes are required to clean the carpet on the floor thoroughly, they are also required if you want to clean the carpet on the stairs thoroughly.
I have owned a nice, but basic, Riccar for the last 15 years. It is still going strong but it has a short hose and the brush does not turn off. We now have half bare floors, half carpet so we decided to get a new machine that allows the brush to turn off and has a longer hose. Needless to say, after 15 problem free years, I am a big fan of Riccar.
As far as vacuuming carpet or rugs it was not contest, the Shark won hands down. It had great suction regardless of how full the plastic dust bin (no bags) would get. The Shark also had a couple of attachments that were handy, but the vacuum would not stay upright when you tried to use anything other than just the straight vacuum. The last test was on bare floors. The exhaust for the Shark is located about 8 inches off the ground in the front.
I agree with others that it's aggravating to have to completely unwind the cord when you want to use the hose, but that's a minor inconvenience when I consider the whole package. This machine is quiet, maneuvers well, fits under furniture that my old vacuum didn't, has a handy control for turning the roller brush on and off, has a nice long cord so I don't have to keep unplugging and plugging it back in and great suction on carpet, furniture and hard floors.
Answer: It does great on both wood floor and carpet.  There is adjustments for carpet heights as well. It is a great Vacuum.  We have a pet with hair that gets deep into the carpets and I have been happy with its performance.  Also love that I do not have to clean out the bag less containers anymore.  The bags hold a lot! I have not changed my bag in the last 6 months if not longer and I vacuum daily.  The only downfall is that the bag indicator does not work well, but it is easy enough to open the front and see how full your bag is.