What’s the Difference Between C7 and C9 Lights?

Check out pros and cons of each type of light

Published: 2022-11-23 08:27:03

Christmas lights are a must-have for the holiday season. While most people know the difference between string lights and rope lights, they may not be as familiar with the difference between C7 and C9 lights. 

Blingle has been an expert in the Christmas light industry for years, so in this post, we'll break down the difference between C7 and C9 lights and highlight the pros and cons of each type of light, so you can make the best decision for your home.  

What are C7 and C9 Lights?

C7 and C9 lights are both a type of incandescent bulb, meaning that they produce light when an electrical current passes through a thin filament inside of the glass enclosure. The main difference between these two types is their size.  

C7 and C9 lights are the two most popular types of Christmas lights. C7 lights are the smaller of the two, with a bulb size of 5/8 inch. These lights are typically used on smaller trees or as accents on larger trees. C9 lights are the larger option, with a bulb size of 1 inch. Again, these lights are often used as the main light source on larger trees. C7 and C9 lights are available in various colors, including traditional clear and multi-colored ones.  

How are they Different From One Another?

The main difference between C7 and C9 lights is their size. C7 lights are smaller and more delicate, while C9 lights are larger and more rugged. This difference in size also means that C7 lights use less energy than C9 lights. C7 bulbs also last longer than C9 bulbs, so you won't have to replace them as often.  

When decorating your tree, C7 and C9 lights have their own benefits. C7 lights are a good choice if you want a delicate look for your tree. They're also a good option if you're looking to save on energy costs. C9 lights are a better choice if you're looking for a bolder look. They're also a good option if you don't mind replacing the bulbs more often.  

What is the Best Use for Each Type of Light Bulb?

C7 and C9 lights are two of the most popular light bulbs. But what is the best use for each type of light bulb? C7 lights are best used for indoor Christmas decorations. They're also great for string lights because they produce a bright, white light. On the other hand, C9 lights are best used for outdoor Christmas decorations. They're also great for string lights because they produce a bright, white light. You can also use them for accent lights or spotlights.  

Pros and Cons

Both C7 and C9 lights have their benefits and drawbacks, making it easy to decide on the type you'll use. C7 lights are very energy-efficient, using only 5 watts per bulb. They also last much longer than their predecessors, with an average lifespan of 15,000 hours. In addition, C7 Christmas lights are versatile and can be used for both indoor and outdoor decorating. They're available in many colors, including the popular clear and multi-color options. C7 bulbs emit less heat than other types of bulbs, making them safer to use around children and pets. On the other hand, they can be more expensive than other bulbs, and they're not as bright as some alternatives.  

C9 lights are also quite energy-efficient, using only 7 watts per bulb. They have an average lifespan of 3,000 hours, which is shorter than that of C7 lights. However, C9 lights are much brighter than C7 bulbs, making them a good choice for outdoor decorative lights. They're also available in many colors, including clear, multi-color, and even chase light options. C9 bulbs emit more heat than C7 bulbs, so they're not as safe to use around children and pets. However, they're less expensive than C7 lights.  

Which Type of Light Bulb is Right for You - C7 or C9?

Choosing between C7 and C9 may be confusing if you're unsure what the difference is. C7 and C9 refer to the light bulb's base, so looking at your socket will help you decide which option is right for you. A C7 has a small E12 Edison screw base, while a C9 has a larger E17 Intermediate screw base. The type of light bulb you need will depend on the fixture you're using. If your fixture has an E12 socket, you need a C7 light bulb. If your fixture has an E17 socket, you need a C9 light bulb.