It is often hard to pinpoint what exactly is causing your lights to dimmer, however it could be related to the bulbs you use or even could be the wiring in your home. Your lights may dim for a number of reasons, however, it is important to note the extent and length of time your lights have been dimming for as it will help indicate the problem. Here are the main reasons for dimming lights:
Circuit overloading
Large appliances such as your washing machine, air conditioners, dryers etc. will require a large amount of electricity. This often causes your circuits to overload and as a result your lights may flicker. Overloaded circuits are common, and you can determine if this is causing your dimming lights by assessing if multiple appliances are running on one circuit.
The light bulbs your using
A common cause for flickering or dimming lights is in relation to your lightbulbs, and your dimmer switch isn’t compatible with your bulbs which causes them to malfunction. The simple fix is to switch any CFL bulbs to lightbulbs that match your dimmer switch.
Problem with your power grid
If your lights tend to dim for a long period of time, this could be in relation to your power company or a brownout. Make sure to contact your utility provider to find out what has caused the issue. It could be weather related or the electrical service in your area has been compromised.
Your wiring is outdated
As technology continues to grow, electricity demands follow. This means that it is important to keep up to date on your electricity and wiring. Outdated wiring often means that you will experience low voltage levels and can lead to dim lights. Consult an electrician for rewiring options and cost-efficient ways to update your wiring