Washing Machines
A 7kg washing machine with a 1-star water efficiency rating uses about 210 litres of water per wash. The 6-star water rated washing machine of the same size uses only 35 litres of water per wash.
Washing machines are one of the few appliances that have both water and energy efficiency labels. Water and energy efficiency labels on new machines even have an itemised rating for washing in cold or hot water.
There are two types of washing machines – top loaders and front loaders.
Overall, the front loader is better for the environment as it uses less water, less energy and less detergent. The front loader does however take longer to complete a load of washing compared to a top loader.
Washing in cold water is the best way to save energy as water heating accounts for 90 percent of energy consumption or save this energy by installing a solar hot water system.
Getting the most out of Washing Machines
The key to making the most of your washing machine is to use as little water and energy as possible. Sounds easy in theory, but how can you actually do that? After all, how much variation can there be in putting your clothes in and then just pressing a button?
Actually, there is plenty you can do and it all starts with purchasing a water- and energy-efficient washing machine. Here are some more tips to getting the most out of your washing machine:
- Ninety percent of the energy used by washing machines is in water heating, so the best way to save energy is to use cold water and cold water detergents. It is recommended that you only use warm water when you need to remove difficult stains, or when trying to remove dust mites from bedding.
- Make sure that you only do full loads of washing. Doing a load of washing with anything less than a full load wastes water and energy.
- The detergents you use can make a big difference as well. If you are using your rinse water in the garden as grey water then you should only be using phosphate-free detergents. All detergents, even if they are labelled as phosphate-free or biodegradable, should not be sent to stormwater systems, as they can encourage algae growth and kill aquatic organisms.
