This is not my first Bissell carpet cleaner.  I previously owned one of Bisell's ProHeat 2x models.  Like that model, this DeepClean Premier cleans carpet through water extraction.  It sprays a water/cleaner solution on the carpet and then extracts the (now dirty) water as you make subsequent passes over the carpet.I got this unit after my old one stopped working.  I had it for several years, but used it only once or twice a year in three average/small rooms, so to me it failed prematurely.  The sprayer failed, which apparently was a frequent occurrence on the older models.  I am hoping this one is better in that regard.I loved the way the ProHeat cleaned my carpets, and the DeepClean does the same fantastic job.aThe box includes the cleaner (needs minor assembly), and a trial size bottle of Bissell cleaning solution.  The cleaner weighs about 24 pounds.  Assembly is simply a matter of attaching the handle with two supplied screws, and then attaching part of the electrical cord holder, which is a plastic piece which secures with one screw.  The electrical cord is approximately 22 feet long. The cleaner's path is a foot wide.  It also includes a small job tool, which Bissell calls the Stain Tool, which is 3 inches wide and mounts on the sprayer/hose, like you might mount a handtool on a vacuum cleaner.  The unit has a carrying handle to help lift it when you wish to carry it.  The front does not have any sort of cushioned bumper.The tank on this model is about 25% larger than my old ProHeat.  It is a similar tank, combining a bladder for reclaimed, dirty water, and a tank for clean water/solution mixture.  Since you have to stop and empty the dirty water when the bladder is full, a bigger tank is better.The cleaning head is a lot like the one on the ProHeat.  It is basically a roller with rows of brushes on it (in this case 10 rows), similar to a vacuum cleaner.The DeepClean Premier does NOT have an on board heater that you can shut on and off, as did the ProHeat.  However, the DeepClean uses Bissell's new Heatwave technology.  Sound fancy?  Actually it is a cleaver design, where heat generated from the cleaner's motor is channeled to the bottom of the water tank and the brush areas.Directions are pretty simple.  Pre-treat if you have some tough stains.  Fill the clean water tank by unlatching the top and adding 5 ounces of cleaner to the bladder tank.  If you fill the included measuring cup twice, that's 5 ounces. Fill the tank the rest of the way with hot tap water (NO boiling/microwaved water!).  Then reattach the top of the tank, and plug in the cleaner.  Turn it on and you are ready to clean!As you pass over the carpet, you press the trigger to activate the sprayer.  This wets the carpet with the cleaning solution.  Take your time and do not saturate the carpet.  Periodically empty the dirty water from the tank.  When you are done cleaning, you should check the tank and remove any debris.It is recommended that you perform a rinse step on the carpet, passing over the entire carpet with just water in the unit to rinse it and remove any additional dirt or cleaner residue.I found that the unit cleans just as well as my old ProHeat. You will likely see some color come back into your carpets, and you'll see a lot of dirt come out.  I have some light colored carpets which are 10 year or so old, and after I clean with this unit, they look close to new again.  You can really see the difference and how dingy your carpets may have become over time.  In our house, we vacuum every day, but its not the same as a good water extraction cleaning.You can add accessories like hand tools and a hard floor cleaner, which is like a rubber squeegee which attaches to the unit.The warranty on this unit is three years.I would highly recommend this model.  It does an excellent job cleaning carpets, just as well as I have seen by professional cleaners.  About the only cleaner I have seen outdo the ProHeat, and now the DeepClean, is Bissell's own Big Green Deep Cleaning Machine, but that costs a lot more than the DeepClean, and frankly unless you are going to be cleaning your carpets by water extraction more than once a month, this one will get the job done very nicely. I would opt for the Big Green model only if you are doing very frequent/heavy duty cleaning, in a huge house with lots of carpets where that machine will help cut time, or if you are cleaning office carpets, etc.