While the A-series light bulbs look very similar, there are some significant differences, and many of them are quite subtle. Rather than buying a light bulb only to discover it’s the wrong fit, we have a guide to the A15 and the A19 bulbs.
Both the A15 and the A19 can be found as incandescent bulbs and LED. WE are going to look specifically at the LED versions. Although slightly more expensive, the lower power usage makes for long-term savings on your utility bill, and they are more environmentally friendly.
The A refers to the shape of the bulb. These are traditional pear-shaped bulbs that are more often used for general lighting. The shape is the same, but the size is different. The A15 is the smaller light bulb, as you can see in the chart below.
|Height||3.5 inches||3.9-4.73 inches|
|Width||1.87 inches||2.4 inches|
|Average Brightness||300-700lm||Up to 1,600lm|
So, the first thing you need to decide is which bulb will look better in your light fittings. The A15 has a 1.87-inch diameter and the A19 has a 2.4-inch diameter. The A19 is also longer. Almost all A19s have an E26 base. The A15s have an E26 base but in Europe, you will also find the E14 base.
The consumption and brightness will vary too. We looked at the average ratings for the A15 and A19. Depending on the brand, you might find other ratings. The A15 has a lower consumption, an average of 5.5W, which is the equivalent of a 40W incandescent bulb. The A19 uses an average of 9.5W, like a 60W incandescent bulb. With the extra power, you get more brightness with the A19.
For a more accurate comparison, we looked at the Philips A15 and the Philips A19.
The Philips A15
The Led light bulbs have a 1.85-inch diameter and are 3.9 inches high. They are dimmable, with 2,200 to 2,700 lumens. They are 3.8W bulbs, the equivalent of just 40W incandescent, so you can enjoy some pretty good savings on your electric bill. They are CRI 90 bulbs, providing light that shows true color. The lifespan is 10,950 hours. You can find it with an E26 base or an E17 base.
The Philips A19
Like the A15, the Philips A19 is compatible with dimmable light fittings and is flicker-free. You can adjust the lumens from 2,200 to 2,700lm. The bulbs are 2.5 inches in diameter and 4.7 inches in height. The LED bulb is rated at 8.8W with a 60W incandescent equivalent. The bulbs are frosted with an E26 base. They are amazing value for money. The packs work out at a little over $3 per bulb and the average lifespan of each bulb is 15,000 hours.
The Final Verdict
If the size and base are irrelevant, we would go for the A15. Because the brightness is the same, these are good bulbs for living rooms, bedrooms, lamps, and other areas you need a warm glow. The A15s use considerably less energy and although the initial cost might be a little higher, the saving will be greater.