How do you clean a glass light shade?

Wash in warm soapy water, rinse, and dry completely before reinstalling.

Can dirty light fixtures cause problems?

Yes. Dust on bulbs reduces light output and can become a fire hazard if it builds up around heat-producing bulbs.

Use a step ladder or long-handled duster. For very high fixtures, hire help to safely reach them.

It is a good time to replace any old bulbs since the fixture is already accessible.

Household

A clean light fixtures makes a bigger difference than you'd think. Here's the most effective method, plus the mistakes most people make.

1
Turn off the power
Turn off the light fixture at the switch and wait for bulbs to cool. For ceiling fixtures, turn off at the breaker.
2
Remove and wash glass shades
Carefully remove glass shades and wash in warm soapy water. Rinse and dry completely before reinstalling.
3
Wipe metal parts
Wipe metal parts with a damp microfiber cloth. Use glass cleaner for chrome and brass finishes.
4
Dust bulbs
Wipe the cool bulbs with a dry cloth to remove dust. Never use water on bulbs.
5
Reinstall
Reinstall glass shades carefully when dry. Restore power.

TIPClean light fixtures every 3-6 months. Dirty fixtures reduce light output by up to 50%.
TIPUse a long-handled duster to reach high ceiling fixtures between deep cleanings.
TIPReplace bulbs while you have the fixture down -- it saves time.

XCleaning with the power on, which is dangerous.
XSpraying liquid directly on the fixture, which can damage electrical components.
XUsing water on bulbs, which can cause them to break.

Every 3-6 months for ceiling fixtures, monthly for table lamps.