There are a lot of benefits to having an electric aroma diffuser in your home. The most important thing to take into account is the size of the device. It's not a good idea to use a large diffuser if you only have a small room or you want to diffuse scented oils in your bedroom. Consider the length of time that you want the diffuser to run for and the wattage of the device. The wattage of the device should be about equal to the length of time that you want it to run for.