Learn the formula for how much light a room needs plus how to space downlights.
Lighting design is both an art and a science. Our homes thrive when we choose the right mix of lighting, and recessed lighting is a big part of that success. Well-placed recessed lighting (also known as can lights or downlights) can highlight a room’s best feature or help us focus on the task at hand.
Find your total wattage. Here’s a handy formula to figure out how much light your room needs: Multiply the length of the room by the width to find the total area. Multiply the area by 1.5; this is the total wattage you’ll need to light the room.
For example: If your room is 17 feet wide and 20 feet long, the total area is 340 square feet. Multiply 340 by 1.5, and you’ll get 510, so you’ll need 510 watts of total light to efficiently light your room.