How much to replace smoke detector

ElectricalUpdated March 2026

The answer to 'how much to replace smoke detector' is that the cost can vary significantly depending on several factors. In general, you can expect to pay anywhere from $20 to $80 to replace a basic smoke detector, with the average cost being around $40-$50.

The specific cost will depend on the type of smoke detector (ionization, photoelectric, or dual-sensor), the brand and features, whether it's hardwired or battery-powered, and if it needs to be installed by an electrician. Replacing a hardwired smoke detector may cost more than a battery-powered one, as it requires additional labor and potentially rewiring. Additionally, the cost can vary based on your location and the going rates for labor in your area.

Sources

National Fire Protection Association— authority

U.S. Fire Administration— authority

Consumer Reports— guide

Frequently Asked Questions

Do I need to hire an electrician to replace a smoke detector?

In many cases, you can replace a basic battery-powered smoke detector yourself without needing to hire an electrician. However, if the smoke detector is hardwired into your home's electrical system, it's generally recommended to have an electrician handle the replacement to ensure it's done safely and up to code.

How often should I replace my smoke detectors?

Most smoke detectors have a lifespan of 8-10 years. It's a good idea to replace them every 10 years or sooner if they start malfunctioning or fail to respond to the monthly test.

Can I install additional smoke detectors in my home?

Yes, you can install additional smoke detectors in your home for added safety and coverage. The National Fire Protection Association recommends having smoke detectors in every bedroom, outside each sleeping area, and on every level of the home.

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