Consider which accessories might be beneficial. Many models can be supplied with a draining basket, chopping board and strainer bowls. A drainer extension can be useful for sinks without a drainer where worktop space is limited in a small kitchen.

The importance of high quality knives can't be stressed enough! Buy the best you can and expect to spend some serious money. It is better to buy a couple of excellent knives and slowly add to your collection rather than buying an entire set of low quality knives. Start with a chef knife and paring knife. You will also want to buy a sharpening steel.

Most of the energy used by a dishwasher is for water heating. The EnergyGuide label estimates how much power is needed per year to run the appliance and to heat the water based on the yearly cost of gas and electric water heating. When it is time to buy a new unit, look for the Energy Star label.