Most floor lamp mistakes are size mistakes: a lamp that is too short to matter, too tall to live with, or a single point of glare doing the job three softer lights should share. Here are the working rules, room by room.

1. Height: match the lamp to what sits next to it

• Beside a sofa or chair: the bottom of the shade lands at or slightly below seated eye level — roughly 58 to 64 inches of total lamp height for most sofas. A 69-inch lamp sits right in that window.
• Behind a recliner or beside a bed used for reading: slightly taller is fine; what matters is that you never see the bare bulb from a seated position.
• Corners and empty walls: go tall. A 76-inch torchiere fills vertical space and bounces light off the ceiling — the fastest way to make a room feel finished.

2. Brightness: one number per job

• Ambient (fills the room): 1,500–3,000 lumens — torchiere territory.
• Reading (one chair): 400–800 lumens aimed at the page.
• Accent (artwork, plants): 200–500 lumens, narrow and warm.

A 3,000-lumen 30W torchiere covers ambient duty for most US living rooms on its own.

3. Layering: the three-lamp living room

Designers light rooms in layers, and the budget version needs only three plugs:

1. Fill: a torchiere bouncing light off the ceiling.
2. Task: an arc lamp hanging light over the reading corner.
3. Warmth: a pair of matching table lamps (1,200 lumens each, warm-to-daylight adjustable) on the console or side tables.

All three dimmed to half in the evening is the look people mean when they say a room has atmosphere.

4. Finish: match the wood and metal you already own

Black metal disappears against dark furniture; solid wood softens a room full of rectangles. If the room already has both, let the lamp repeat the less common one so it reads as a choice, not an accident.