How Much Does A Smoke Detector Cost?

The average cost to install a smoke alarm or carbon monoxide detector is $65 for one unit.

Each addition unit is $20.

How much does it cost to replace a smoke detector?

Smoke detectors can cost as little as $10 per unit, but can range up to around $100 for the upper end of the market. The bulk of the cost comes from hiring an electrician to install, at an average of $50/hr.

Can I get a free smoke detector?

The Red Cross and its partners can test existing smoke alarms and install up to three free smoke alarms for those that need them. If you are able to purchase and install your own smoke alarm but would like information on home fire safety and smoke alarm installation, please visit

Can I replace smoke detector myself?

Costs to replace hardwired smoke alarms

You can replace hard-wired detectors yourself, if you can reach them and if you have sufficient skill to replace a light fixture. (Be sure to first turn off electricity at the breaker box.) Otherwise, you can hire an electrician or an alarm service company to do the job.

Do I need an electrician to replace a smoke detector?

They are hard-wired into our electrical system, but that doesn’t mean you need an electrician to replace them. Modern hard-wired smoke detectors don’t have wires in the back that need to be connected to loose wires in the ceiling.