Electrical switches are the means through which you connect electrical appliances to a power supply, which is then why it remains an integral part of your home. Flipping a light switch turns darkness into bright light, meanwhile using a water heater allows you to turn on water heater supply just as a general wall switch allows you to use other functions around your home. As these are activities that you carry out many times without second thought, this repeated motion will eventually lead to the switch repairs and replacement.