Whether you are considering buying a dishwasher for the first time or replacing an older model, there are many things to consider when purchasing and installing a dishwasher.

Dishwashers are available in a variety of styles and price ranges. According to Consumer Reports, most dishwashers’ cleaning ability is generally very good across the board, so the real deciding factor in buying a new model is the feature comparisons.

Important diswasher features include the following:

	The number of wash levels the unit has. A model with more wash levels has more outlets for spray — meaning more opportunity to thoroughly clean your dishes. A unit that only sprays from the bottom will not do as good a job.
	Energy efficiency. Check the yellow Energy Guide label for the dishwaher’s efficiency rating. The lower the number, the less energy the dishwasher uses.
	The amount of noise the unit generates while operating. The noise level is important, so much so that some manufacturers, such as Bosch, have directed a lot of their advertising to tell consumers just how quiet their dishwashers are. A noisy dishwasher is irritating so you’re well advised to spend a bit extra on a quieter model. The Kenmore Elite is another model that scores top points for quieter operation.
	Whether or not the unit has loading flexibility. Being able to adjust the rack, or fold down some of the tines will make a huge difference in your ability to stack dishes of varying heights and sizes, as anyone whose ever wrestled to fit in an oversized serving platter can attest.
	Different wash cycles. Depending on your needs a few options for wash cycles, such as a heavy duty cycle, a high-heat cycle or a light cycle, is always a nice feature.
	A self-cleaning filter. Without a self-cleaning filter you will have to empty the filter manually. That’s not really a big deal for some people, but if you’re inclined to forget it might be something to consider.
	A time delay setting. This is a great option as it allows you to load the dishwasher and then run it later. Unless you opt for a super quiet model, you’ll really appreciate being able to do this.
	Appearance. If you’ve just spent a lot of money on a beautiful kitchen remodel, you’ll want a dishwasher that fits the new look. Stainless steel tubs look great and prevent the discoloration that can occur with plastic tubs. Some models will offer custom doors to match your cabinets as well.

The basic procedure for installing a dishwasher is the same no matter whether you’re putting in a unit for the first time, or replacing an older model. In the case of replacing an existing dishwasher, of course, you will have to first remove the original unit before installation. Most models are the standard 24 inches wide but do measure first to ensure your new unit will fit the space. Whether or not this is a new installation of a replacement, make sure to read the installation manual that comes with the unit before you begin in case there are any special considerations that may require extra work.

The three connections you will be dealing with are: the hot water supply line, the drain line and the electrical supply. If you are replacing an older model the plumbing and electrical hookups will already be in place so all you need to do is to shut off the water and power to the dishwasher before you begin working. Remove the bottom access panel to find the supply line, drain outlet and power cord connection. Next disconnect the dishwasher drain line from the sink drain and unscrew the mounting brackets for the unit from the underside of the counter before you begin to work the dishwasher out.

If you are installing a new unit for the first time you will need to measure and cut holes for the supply and discharge lines

To connect the new model simply line the dishwasher up in front of the opening and remove the access panel in the unit before aligning the electrical cable and water supply line to where they need to go under the dishwasher. Next feed the drain hose through the opening to the sink and begin to ease the dishwasher into place, making sure the lines stay where they need to be. Check to make sure the unit is level and adjust it if need be. Attach the lines, replace the access panel and then turn the water and power back on.