To help the positive circulation of energy throughout a space, the placement of appliances does play a role according to the science of Vastu Shastra and Feng Shui. Each appliance has its positioning and you must learn on what to do and what not to do for a better vibes.
South direction is related to the water element so by placing a washing machine there will be beneficial and create a more positive impact and good luck. Apart from that, always get a washing machine which does not make a lot of noise because noises do create imbalance in the energy that circulates. Or if you have a noisy washing machine, then make sure you hang a wind chime or crystal ball to rectify the negative energy.
Drying clothes at night is to be avoided at any cost because it might attract the energy of souls which are moving around in the environment. When clothes are dried during the day, they are balanced with positive energy from the sun and it reflects positive vibes to the person who wears the clothes.
According to Feng Shui and Vastu Shastra, cleaning items such as dustbin, broom, and cleaning clothes are known to give out negative energy and they ought to be kept hidden. These things are believed to be distorting the productivity of the space where they are kept. Apart from that, dustbins must be kept closed so they do not emit negative energy throughout the space they are kept.
The south-west directions are dedicated as helper or assistance directions. So, any appliances made of metal such as telephones, faxes, computers, laptops etc must be kept in this direction.
These are small things that generate good energy flow and create happiness and success in life. Always try to keep everything neat, uncultured and clean and make sure it does impede the flow of positive energy.