A dishwasher is a machine that washes dishes by using water and detergent. The machine has two tiers, with the top tier containing the dishes to be washed and the bottom tier containing water and detergent. The dishwasher cycles through different settings to clean various types of dishes. You can also navigate https://premierhomesupply.com/ to know more about dishwashers.

There are basically three types of dishwashers- front loaders, top loaders, and mixers. 

Front Loaders: These dishwashers have a built-in basin that faces the cooktop or oven, so all of the dirty dishes go into it. They're usually less expensive than other types of dishwashers and they work well if you only have a few dishes to wash at a time.

Top Loaders: Top loaders have a large opening in the front of the machine where you put all of your plates and cups. The water is poured over them as it cycles through the machine, which causes them to get very hot and remove more dirt and food residue than other types of dishwashers. They're also more expensive than front loaders but they can handle bigger loads.

Mixers: Mixer dishwashers combine features from both top and front loaders. They have a large opening in the front where you put all your dishes, but they also have a washing basin on top that spins around while the machine is running. This means that even big pots and pans can be washed in minutes flat using this type of dishwasher. 

Overall, front loaders are the most common type of dishwasher and they're usually cheaper than top loaders or mixers. They're also good if you only have a few dishes to wash at a time, but they don't work as well if you have a lot of dishes to wash.