Ease of cleaning is well worth considering at the outset. Stay clean liners resist dirt build-up but pyrolitic cleaning is the ultimate. It burns off all baked-on debris at 500°C so that all you have to do is sweep out the resulting ash. Look out for ovens with a steam cleaning facility, too, and remember that some ovens have removable inner doors that are easy to clean.

When shopping for a new washer, look for a front loading (horizontal-axis) machine. This machine may cost more to buy but uses about a third of the energy and less water than a top-loading machine. With a front loader, you'll also save more on clothes drying, because they remove more water from your clothes during the spin cycle. Look for the Energy Star label.

A concealed heating element reduces the risk of lightweight plastic items such as children's drinking cups melting onto it after becoming dislodged mid-cycle. Limescale build-up is also prevented. Some manufacturers now produce models with the concealed heating element coiled around the water inlet pipe for further energy efficiency.