RV Light Bulb Choices: 912 vs 921 Bulb?

Affiliate Disclosure: This page contains affiliate links. As an Amazon associate, I earn from qualifying purchase (at no extra cost to you)

The 912 Vs 921 bulb debate is not quite up there with intelligent design vs evolution arguments, but it means much more to caravan owners. That’s right, motorhome owners care more about light bulb types than questions about the nature of reality. And so do we!

The truth is that every choice has an impact on your caravan, no matter how big or small. And the two most popular light bulb types for your caravan are 912 and 921 bulbs. But which one is best? Which one should I use in my RV? Are there any differences between the two?

What Are the Differences Between 912 and 921 Bulbs?

If you held up 912 and 921 light bulbs next to each other, you might not be able to notice the difference. Your first impression would not be much. But what are the differences between 912 and 921 bulbs, if any? The differences are subtle but more than enough to spark the interest of a motorhome owner looking for the best light bulb options.

RV owners will find it much easier to buy 921 bulbs because they are the most common and more accessible. The truth is that a 921 bulb should burn brighter than a 912 standard bulb, but this means it uses more power. And this is not a good thing for caravan owners that are concerned about the power consumption of their vehicles.

Although the two bulb types are largely interchangeable, there are discernable differences. The 921 bulb has a wattage of 16.8 and draws 1.4 in amps. The 912 bulb has a wattage of 12 and draws 1 amp. You will also find that 921 bulbs are incandescent lights, where 912 bulbs are LED. This means that a 912 bulb is the best in terms of energy efficiency, which is a major selling point where power consumption issues are concerned. 

Which Light Bulb is Suited to RV's and Caravans?

Are you an RV owner looking for the best 912 vs 921 bulb answers? If so, the bulb you choose should be dictated by what you need. 921 bulbs are more reliable and accessible, while 912 bulbs use less electricity. Do you need more brightness or less power consumption? This is a choice only you can make.

Some RV owners like the idea of using energy-saving LED lights instead of incandescent bulbs. And if so, the 912 bulb is a perfect choice. LED lights are generally more suited to an RV or carvan because they use less energy and create less heat, which is important in confined spaces.

Who Wins? 912 or 921 Bulbs?

There is no winner, only viable options depending on what you are looking for as an RV owners. Most motorhome owners opt for the energy-saving 912 LED bulb versions because energy consumption is always a major factor on caravan tours. 

The 912 vs 921 bulb debate will continue because there is no obvious answer or clear winner. Do you want brighter lights or less power consumption? That is the difference between these two popular light bulb products. 

Scroll to Top