Differences between a15 and a19 Light Bulb

Light bulbs are one of the most commonly used electrical appliances in homes and commercial settings. They provide illumination in dark spaces and make our lives easier. However, with so many different types of light bulbs available, it can be challenging to choose the right one for your needs. In this article, we will discuss the differences between two commonly used light bulbs: A15 and A19.

Differences between A15 and A19 Light Bulbs:

  1. Size: A15 bulbs are smaller in size compared to A19 bulbs. A15 bulbs have a diameter of approximately 1.875 inches, while A19 bulbs have a diameter of 2.375 inches. As a result, A15 bulbs are often used in smaller fixtures, such as ceiling fans and desk lamps, while A19 bulbs are used in larger fixtures such as table lamps, floor lamps, and pendant lights.
  2. Brightness: A19 bulbs typically have a higher wattage and produce more brightness than A15 bulbs. For example, a typical A19 bulb may have a wattage range of 40-100 watts, while A15 bulbs usually have a wattage range of 25-60 watts. Therefore, A19 bulbs are often used in spaces that require more illumination, such as living rooms and bedrooms, while A15 bulbs are suitable for smaller spaces such as closets and bathrooms.
  3. Base type: Both A15 and A19 bulbs come with different base types, such as medium (E26), candelabra (E12), and intermediate (E17). However, A15 bulbs are more commonly found with a candelabra base, while A19 bulbs are more often found with a medium base.
  4. Cost: A15 bulbs are generally less expensive than A19 bulbs, primarily due to their smaller size and lower wattage. A19 bulbs are larger and have a higher wattage range, which makes them more expensive.


In summary, A15 and A19 light bulbs have some significant differences in size, brightness, base type, and cost. The choice of which bulb to use depends on the specific lighting needs of the space in which they are used. A19 bulbs are suitable for larger spaces that require more illumination, while A15 bulbs are better suited for smaller areas.

Leave a Comment