Convection ovens allow you to bake more foods (cookies, muffins, etc.) at once with even browning, but without the need to shift and rotate pans. A convection oven is the same as a conventional oven except a fan is installed in the back interior of the oven. The fan is used to blow and force the heat to circulate in the oven and around the food, thus eliminating the need to rotate and shift pans. In reality, though, even with the most expensive convection ovens, you will still need to rotate your foods, because there will always exist still hot spots in the cavity, because the cavity is small. Don't compare home convection ovens with most commercial convection ovens used by bakers and small food manufacturers, because their commercial ovens are much larger than home ovens and commercial ovens don't have any hot spots and therefore, there's no need to shift and rotate pans.

Check the capacity. 'Standard' 60cm wide dishwashers can take 12, 14 or 16 place settings, whilst slimline 45cm models may cater for 7, 8 or 9 place settings. Compact dishwashers tend to be 45 cm wide and can be placed on the worktop or built in, depending on the model. They may take 4, 5 or 6 place settings.

About 80 percent to 85 percent of the energy used for washing clothes is for heating the water. There are two ways to reduce the amount of energy used for washing clothes - use less water and use cooler water. Unless you're dealing with oily stains, the warm or cold water setting on your machine will generally do a good job of cleaning your clothes. Switching your temperature setting from hot to warm can cut a load's energy use in half.