The appliance is either Energy Star Certified, or has an EU energy efficiency rating of A++ or A+++. This means it consumes around 20-30% less energy than is required by the minimum local standards for energy efficiency.
A hot water connection means that you can provide the machine with hot water from your main hot water supply. This can be faster than an internal heater and can save money if you have a cheap and efficient water heater.
Whirlpool Duet WFW70HEBW
Hoover OPH 716DF
Aqua stop machines have a special mechanical system which cuts off the water flow into the tub if a fault occurs with the inlet pipe.
Stackable machines are ideal if you have limited space as you could stack a tumble dryer on top of a washing machine.
Front loading machines are good as you can use the space above and sometimes stack a dryer on top. In general front loading machines use less energy, using less water by only partly filling the drum and obtaining higher spin speeds which clean without requiring as much heat.
The device is designed a specific way so that it can be built into a cupboard.
Dot matrix displays can show important text or graphics using a matrix of lights or mechanical indicators like the display on a calculator.
With a transparent door you can look inside the machine and see what laundry is inside.
You can adjust the height of the machine which means that if the floor is uneven you can level it out.
A faster spin speed means you can get things cleaner with a lower temperature of water. Using a fast spin also extracts water, meaning that the clothes come out nearly dry. Generally, anything over 1000 rpm is very good.
With a wider range of programs to choose from you can be more specific and choose the best, most economic program for your needs.
More weight capacity helps if you want to wash something heavy like curtains. A traditional household machine can hold around 6kg, so with a machine much bigger you may waste energy using it when only half full.
With a lower noise level for washing you can worry less about disruption and may be able to do a wash at night or while reading.
With a delay start option you can schedule the machine to begin at a later time. You can also set the machine to wash at night if your electricity is cheaper outside of peak times.
Steam is a quick way to freshen up items that have only been worn for a few hours, or items that smell like food or smoke.
The machine will let you know when it is finished with an alarm or even by playing a tune.
The detergent drawer is washed automatically to prevent a build up of old detergent.