If you enjoy washing by hand, no! However modern machines use less water, detergent and power than ever before and wash hotter using really powerful cleaners giving a hygienic wash result. You can save around 500 hours a year so it is worth thinking about. If you have a small kitchen or live alone, choose a slimline model.

Choose a dishwasher with sturdy compression springs in the door. Also look for tough, lightweight nylon or graphite racks with cushioned tips that protect glassware and cookware. Weimer recommends choosing a model with a rack design that provides the largest, most flexible interior space and is configured for your belongings, including odd-shaped pieces.

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.