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High-quality smoke detectors can sense both smoldering and flaming fires, don’t disturb you unless there are dangerous conditions, and are interconnected so when one goes off, they all go off.
The First Alert Smoke and Carbon Monoxide Alarm is our top pick because it detects both smoke and carbon monoxide, features voice and beeping alerts, and First Alert offers excellent customer service.
Half of all fire deaths happen between 11 p.m. and 7 a.m. when most people are asleep. One way to increase your chances of surviving a fire in your home is to have smoke alarms, but these devices don’t last forever. In fact, the United States Fire Administration (USFA) recommends replacing your smoke detectors 10 years after the date of manufacture, which is usually found on the back of the alarm.
It’s a good idea to replace all of your smoke alarms at the same time and to use units that are made by the same manufacturer. Fortunately, this is fairly easy to do these days. Due to mergers and acquisitions, there are only two big players in the smoke detector industry: First Alert and Kidde. Though, Nest is growing in popularity due to its superb smart smoke detector.
When shopping for smoke alarms, you need to know what kind of sensors the detectors have: photoelectric or ionization. Photoelectric sensors do a great job of detecting slow-burning, smoky, smoldering fires. Ionization sensors are better at detecting fast-burning, flaming fires. Ionization sensors are more popular and less expensive but less effective. If possible, try to install at least one of each type of alarm.
How many smoke alarms should your home have? This is a tricky question because codes vary from one municipality to another. You can find your city’s code by simply searching “<your city> smoke detector code” online. Most require an alarm in each room where people sleep, an alarm in hallways outside of bedrooms, and at least one on each level, including the basement.
Lastly, don’t stop at smoke alarms. Carbon monoxide detectors are also a must. The requirements are also governed by local code, and generally, you want a CO detector on each floor. A fire extinguisher can also be a lifesaver. Not only can a fire extinguisher put out small fires, but it can also be used to open up a path of escape in the event of a raging fire. Again, place one on each floor.
While you are improving your family’s fire safety, take a moment to draw up an escape plan for family members. For information on how to create a plan, visit the website for the National Fire Protection Association.
While researching the best smoke detectors, we looked at countless ratings and reviews from buyers and experts. Our guide features detectors that will last you for at least five years, are easy to install, and, most importantly, they will alert your family when hazardous smoke is present.
Here are the best smoke detectors you can buy:
- Best smoke detector overall: First Alert Smoke and Carbon Monoxide Alarm
- Best hardwired smoke detector: Kidde Smoke Alarm Dual Sensor
- Best dual-sensor smoke detector: First Alert Photoelectric and Ionization Smoke Alarm
- Best smart smoke detector: Nest Protect Smoke and Carbon Monoxide Alarm
- Best affordable smoke detector: Kidde Hardwire Smoke Alarm
Read on in the slides below to check out our top picks.
The best smoke detector overall
Why you'll love it: Installing the First Alert Smoke and Carbon Monoxide Alarm in your home will decrease your family’s chance of falling victim to the “silent killer.”
The First Alert Smoke and Carbon Monoxide Alarm is a terrific solution because it has an electrochemical CO sensor and is interconnected so it alerts the other connected alarms when there are dangerous conditions.
The smoke sensor is photoelectric, which is better for detecting slow, smoldering fires. You can program up to 11 locations into the connected alarms, and the voice will tell you where hazards exist. Each unit is operated using two AA batteries, which are included. And, it tells you when the battery is low with a beep every minute. First Alert backs the quality of this detector with a seven-year limited warranty.
The First Alert Battery Operated Combination Smoke and Carbon Monoxide Alarm is one of two smoke detectors recommended by The Wirecutter. The reviewer chose another First Alert detector as the top pick because it’s more affordable, but if you want coverage against carbon monoxide, he suggests throwing a few of these detectors in the mix.
Consumer Reports recommends this model because it did an excellent job of detecting high and low CO levels in its tests, and the device clearly conveys unsafe environments. Consumer Search and The Spruce also recommend this detector.
About 77% of the buyers who reviewed the First Alert detector on Amazon gave it a positive rating. One parent appreciated this device because it was able to wake up the children. The family's previous smoke alarm would do nothing, but the combination of the beeping and the voice caused the kids to stir after 10 seconds.
Another buyer was unable to connect his units so he contacted the manufacturer and received two replacement devices in a couple of days. He appreciated the excellent customer service. There are some complaints of false alarms, even when there are no clear causes.
Pros: Also detects CO, interconnected, combination voice and beeping, excellent customer service
Cons: Expensive, complaints of false alarms
Buy the First Alert SCO501CN-3ST Battery Operated Combination Smoke and Carbon Monoxide Alarm on Amazon for $47.33 (originally $54.97)
The best hardwired smoke detector
Why you'll love it: The Kidde Smoke Alarm Dual Sensor Detector has both photoelectric and ionization sensors to protect you from smoldering and flaming fires.
There are two main features that make the Kidde Smoke Alarm Dual Sensor Detectorgreat. First of all, it has both of the sensors recommended by countless fire safety associations: photoelectric (for smoldering fires) and ionization (for flaming fires).
Also, this unit can be hardwired into your home’s electrical system so you don’t have to worry about replacing batteries. However, there’s also a 9V battery backup that covers you in case of a power outage. Kidde backs the quality of this device with a 10-year limited warranty.
We should also note that the United States Consumer Product Safety Commission issued a recall for some of these Kiddie devices. In the manufacturing process, a yellow cap was left on the units that blocked one of the smoke sensors. It’s unlikely you will find one of these, but if you do see the yellow cap on your detector, contact Kidde, and the company will replace it immediately.
The Kidde detector is one of two smoke detectors recommended by Consumer Reports. In the reviewers' tests, the unit responded quickly to paper fires with little smokes but lots of flames. It also had a fast response time for smoldering, smoky fires.
The Reviews recommends this detector because of the dual sensors and the excellent alarm intensity, which the reviewer measured to be 85 decibels (dB). However, he didn’t like that there were relatively few features, and once the low-battery alarm starts chirping, there’s no way to silence it.
Approximately 69% of the reviewers of the Kidde Smoke Alarm Dual Sensor Detectoron Amazon gave it four or five stars. The most helpful reviewer appreciated how easy it is to replace the battery and that the alarms are interconnected. However, he points out that all of the smoke alarms must be the same to use the interconnected feature.
As with many detectors, there are several complaints of false alarms. Unfortunately, to silence the alarms, buyers had to disconnect the hardwiring and the backup battery.
Pros: Does a great job of detecting flaming and smoldering fires, interconnected, battery backup
Cons: Recall notice, hard to silence, sensitive sensors
Buy the Kidde 21007915 PI2010 Smoke Alarm Dual Sensor on Amazon for $39.13 (originally $43.35)
The best dual-sensor smoke detector
Why you'll love it: The First Alert Hardwire Photoelectric and Ionization Smoke Alarm is an excellent detector that relies on hardwiring and can detect the two main types of fires.
The First Alert Hardwire Photoelectric and Ionization Smoke Alarmfeatures the patented “OptiPath 360 Technology,” which is designed to give 360-degree access to the smoke sensor, which can detect smoldering and flaming. This is a wire-in unit with a two-AA-battery backup so you are protected even if the power goes out.
First Alert states that the horn is 85 dB, which is similar to loud traffic or a garbage disposal. First Alert backs this alarm with a 10-year limited warranty.
The Spruce tested the First Alert detector and rated it the best smoke detector. The reviewer notes that the interconnected units all go off when one goes off, and the sensors quickly detected both types of fires. Consumer Reports also tested this model and gave it top marks for how it responded to smoldering and flaming fires.
Reviews.org recommends the 3120B because the units have flashing LED lights to denote which one initiated a low battery alert or alarm, and there are silencing buttons for low-battery chirping and false alarms.
Around 74% of the buyers who reviewed the First Alert Hardwire Photoelectric and Ionization Smoke Alarm gave it five stars. The most helpful reviewer installed nine of these devices with lithium batteries in the hopes there will be no need to replace the batteries during the alarm’s life. He was impressed with how well the interconnection worked when he triggered one unit.
Other buyers appreciate that the First Alert mounting bracket has remained the same over the years so it’s easy to switch out alarms.
Pros: Photoelectric and ionization sensors, battery backup, interconnected, 10-year warranty
Cons: Not all homes will have the needed wiring
Buy the First Alert 3120B Hardwire Photoelectric and Ionization Smoke Alarm on Amazon for $27.18 (originally $31.98)
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