Finder is committed to editorial independence. While we receive compensation when you click links to partners, they do not influence our content.

Compare the best smoke alarms

Choose a detector that fits your space and complies with building codes.


A house fire can irreparably damage your home and property and endanger the lives of you and your loved ones. A working and up-to-date smoke alarm is just one way to significantly reduce the risk of a residential fire, providing the heads-up you need to take action early.

Top smoke alarms

NameAvg. price
Sensor typeSupply voltageOperating temperatureHumidity rangePurchase
Ardwolf Photoelectric Smoke and Fire Alarm$22 (2-pack)Photoelectric9V battery40°F to 100°F10 – 95% relative humidity (RH)Shop now
Kidde i12040 120V AC Wire-in Smoke Alarm$11Photoelectric120V with 9V battery backup40°C to 100°F5 – 95%Shop now
First Alert Smoke & Monoxide Detector$35Photoelectric120V with 9V battery backup40°C to 100°C5 – 95%Shop now
Honeywell 5808W3 Wireless Photoelectric Smoke/Heat Detector$65PhotoelectricLithium battery40°F to 135°FUp to 95%Shop now
Alexa-Enabled Safe & Sound Onelink$220PhotoelectricLithium Battery40°F to 100°F10 – 95%Shop now
Nest Protect$120.00Split‑SpectrumLithium Batteries40°F to 100°F20% to 80% (non-condensing)Shop now
Data obtained March 2019. Prices are subject to change and should be used only as a general guide.

What types of alarms are available?

When shopping for a smoke alarm, you’ll find two main types: ionization models and photoelectric models.

What to look for in a smoke alarm

The cost of an ionization alarm ranges from $10 to $50, while the cost of a photoelectric alarm ranges from $20 for a basic model to $100 or more for a model with helpful features.

If you’re not able to install the alarm on your own, installation fees depend on the size of your home and how many smoke alarms are required for your space.

When shopping for a smoke alarm, look for features that provide the most protection for your home and family.

Bottom line

Smoke alarms are a vital part of keeping you and your family safe within your home or office. Know your area’s safety codes to make sure you’ve installed enough units for your space, and look for features that offer advanced protection and convenience to fit your budget.

How did we choose these products?

To compile our list of top smoke alarms, we conducted our own online research, considering the type of alarm, features, safety and prices.

Frequently asked questions

More guides on Finder

Ask an Expert

You are about to post a question on

  • Do not enter personal information (eg. surname, phone number, bank details) as your question will be made public
  • is a financial comparison and information service, not a bank or product provider
  • We cannot provide you with personal advice or recommendations
  • Your answer might already be waiting – check previous questions below to see if yours has already been asked provides guides and information on a range of products and services. Because our content is not financial advice, we suggest talking with a professional before you make any decision.

By submitting your comment or question, you agree to our Privacy and Cookies Policy and Terms of Use.

Questions and responses on are not provided, paid for or otherwise endorsed by any bank or brand. These banks and brands are not responsible for ensuring that comments are answered or accurate.
Go to site