Electrical Phase|Step 22 of 28
Install Dimmer Switches
Dimmers on every light circuit let you control mood and save energy. A $20 dimmer switch is one of the best value upgrades in any living room update.
Time Required
15-30 min per switch
Cost
$15-$60 per switch
Difficulty
Easy
Dimmer Types
- Standard slide dimmer ($15-$25): Simple slider with on/off switch. Works with most LED and incandescent bulbs. The most affordable option.
- Smart dimmer ($30-$60): WiFi-connected dimmers you control from your phone or voice assistant. Set schedules, scenes, and automate lighting.
- Paddle dimmer ($20-$35): Press top for brighter, bottom for dimmer. Clean modern look. Matches most decora-style switch plates.
- Rotary dimmer ($15-$25): Turn a knob to adjust brightness. Some find the analog control more intuitive than a slider.
Installation Steps
1
Turn off the breaker and test
Flip the breaker for the circuit, then verify no power with a non-contact voltage tester at the switch.
2
Remove old switch
Remove the faceplate and mounting screws. Pull the switch out and note the wire connections. Take a photo before disconnecting.
3
Connect the dimmer
Match wires per the dimmer's instructions. Most dimmers have wire leads — connect with wire nuts. Tuck wires back and mount the dimmer.
Pro Tips
- •Check LED compatibility: Not all dimmers work with all LED bulbs. Incompatible combinations cause flickering or buzzing. Check the dimmer manufacturer's compatibility list.
- •You need a neutral wire for smart dimmers: Most smart dimmers require a neutral wire (white). Older homes sometimes lack this in switch boxes.
- •3-way switches need 3-way dimmers: If a light is controlled from two switches, you need a 3-way dimmer. Only one switch needs to be the dimmer — the other stays a standard 3-way switch.