When choosing a dimmer, there are a few different options that you can choose from. The two main dimmers to choose from are a single pole and a 3 way dimmer switch. A single pole dimmer switch, also referred to as a single-pole single-throw (SPST) switch, controls a singular circuit and is either "on" or "off." These dimmers are usually ideal in places with a single point of entry including a bedroom, bathroom, or an office. On the other hand, a 3 way switch, which can also be referred to as a single-pole switch double-throw (SPDT) switch, alternates between two circuits instead of keeping a light "on" or "off," meaning the light can be changed in two separate locations. These dimmer switches are usually used in locations such as hallways or stairwells.

Not all light bulbs are completely compatible with dimmers, but there are many that are! If you are wondering if a bulb will work with a dimmer, you should look on the packaging of the bulb to see if it is compatible and has "dimmable" written somewhere and the amount of energy (wattage) it can handle. Many fluorescent bulbs will not work with dimmers or will have some side effects including the bulb color having more of a cool look when being dimmed and even though you are dimming the light, it will not prolong the life of the bulb. The main bulbs that are dimmable are LED bulbs and incandescents. There are some LED dimmer switches that will only work with LED lamps, but you will have to read the labeling of the box or go on the company's website to see if there is a specific pairing.