How much does it cost to replace a light bulb?

The light bulb is not expensive, two or three yuan, but it consumes electricity and has a short life, and the warranty is up to three months.

It is recommended to use energy-saving lamps, which consume only a quarter to a fifth of the same brightness. The price is around 30 yuan, and they have a long service life. Some of them have a warranty of three or even five years.

Changing lamps is a compulsory course for men, and women can also try it. Remember to turn off the power before operation.