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How To Choose Light Bulbs For Your Home: Recessed Cans

How To Choose Light Bulbs For Your Home: Recessed Cans

Posted by Chris Johnson on Aug 16th 2015

This is another article in a series dedicated to helping you create a home with beautiful lighting by choosing the best light bulbs. Recessed lights can be a little complicated, but once you've got the basics down, it's smooth sailing!

The first thing you'll need to do is determine which light bulb size your recessed light fixture takes. Here's what you'll see among recessed lighting options: BR30, MR11, MR16, PAR16, PAR20, PAR30, PAR38, R20, R30, R40.

Wow. Let's break that down a little:

The number following the letters in a recessed light bulb indicates size: it's the diameter of the light bulb in eighths of an inch. So, a BR30 is 30/8 inches, or three and 3/4 inches. An MR11 is 11/8 inches. So, you can swap out a PAR30 for an R30 or a BR30 - they are all the same size.

The PAR denotes the light bulb has a parabolic aluminized reflector on its inside, directing light out. That PAR coating maximizes the light output that you'll get from the light bulb. If brightness is your #1 priority in a recessed light, choose a PAR lamp in the appropriate size. The majority of PAR lamps are available in a flood beam spread, but spot beam PAR lamps are also out there. Many PAR lamps are approved for use in wet locations.

The MR indicates the light bulb has a multifaceted reflector on its inside. The facets help gather light from the filament to create a very concentrated light beam. MR lamps are primarily available in smaller sizes - they are all about beam control, which is typically desirable for a narrower light beam. You can choose your beam spread (i.e., narrow flood, flood, spotlight) for many MR lamps.

Moving on to BR: Want to take a guess on what it stands for? This is another reflector lamp to maximize brightness, but this time, the light bulb itself has a bulged shape to direct light out. One disadvantage of the BR lamp is that it's a little longer than the PAR and MR, which means it tends to sit lower in the recessed fixture - and perhaps, protrude from the bottom of the recessed light fixture.

Finally, the simple R. As you might assume, it stands for reflector in this case. There is a mirrored coating on the back of the light bulb to improve light output.

Now that we have those light bulb names deciphered, you should know that they are available in an array of light sources, including incandescent, halogen, compact fluorescent (CFL), cold cathode fluorescent (CCFL), and LED. Halogen was traditionally the most popular of the bunch for recessed light fixtures. It renders colors very well, it's affordable, and it gives you a lot of light output. Now LEDs have taken over the most popular choice for recessed lighting now that prices have come down. LEDs are the most energy efficient, longest lasting, and have the most options available from different brightness packages, color temperatures, and even smart options.

Alternatively, LED recessed retrofits are a hybrid light source between a fixture and a bulb. It has the efficiency of a light fixture but comes with a medium (E26) light bulb base to install quickly and easily into existing recessed housings. LED Recessed retrofits include the trim and light source in one fixture making them blend into the ceiling better than separate bulb and trim combos. LED Recessed Retrofits typically last longer than LED bulbs and manage heat much better than LED bulbs.