There are several different types of towel warmers on the market. The designers understand that this is like any appliance and people have different preferences. There are two main ways to install a towel warmer. One is the model that is hardwired directly into the homes electrical system. The other type is one that is plugged into an existing electrical outlet. Each type of unit is made with built in safety features to ensure that having an electrical device around a water environment will cause no harm or danger.