If you’re here just to find the best smoke alarm and really can’t afford to take the time to read the excellent reviews and buying advice prepared by our researchers, this short paragraph will highlight the vital information. We have gathered a lot of information about the best smoke alarms on the market by looking at owner feedback, expert review sites, and even overall brand quality. Out of the products we have looked at, the Nest Protect S3000BWES is the best because it combines both types of smoke alarms and carbon monoxide detector, it can let you know via phone message if anything is wrong, tells you its exact whereabouts and lights your way so you can find it in the dark. The App Silence allows you to stop the alarm with your phone in case it’s a false detection, but with the Steam Check feature, that situation is very unlikely to appear. Lithium batteries ensure a long run time on a charge, and the carbon monoxide sensor has a ten years lifetime. If the Nest Protect is out of stock, you could also consider the Kidde KN-COSM-BA as we found it to be the second best option.



Comparison Table




Buying Guide


Buying a smoke alarm isn’t so easy when you don’t understand the way it is supposed to work and how all the functions the manufacturer specifies are going to help you. Lately, there are a lot of models which come with interesting and exciting features that make it easy to forget about the essential properties a smoke alarm should have and the primary purpose we put them on our walls for. Here are some features you should look for when trying to find the best smoke alarm.

Kidde KN-COSM-BA Battery-Operated

Type of detection

A smoke alarm is a small apparatus that uses different types of sensors to detect elements that appear when a fire is burning. Based on the sensors they use and the kind of elements they recognize, you can find ionization smoke alarms and photoelectric smoke alarms.

Ionization smoke detectors are better at detecting fast burning fires, with open flare, but usually fail when they’re dealing with smoldered fires that burn slowly. They also have the best chance of going off for no reason. Photoelectric smoke alarms, on the other hand, are more efficient in detecting the latter category of fires, and the risk of false alarms is much smaller. In order to have both the possibilities covered, you can choose a dual-sensor smoke alarm that works with both ionization and photoelectric technology.

As a considerable addition, you can now find smoke alarms that include CO detectors, absolving you from the installation harass of separate devices and making your home even safer.


Power source

Naturally, alarms may be wired to your electrical system or they can run on batteries. The big downside of electrical wiring is that the installation process has to be operated perfectly, and this is why the help of an expert is usually recommended. Also, in the case of power outages, the appliance won’t be functional, and fluctuations of the electric flux might trigger a false alarm. If you want to connect the smoke alarm to your electrical system, it is best if you find a model that has an emergency battery it will switch to when the power is down.

Battery powered smoke alarms also have some disadvantages. The batteries will need to be replaced, and most of these detectors will make a chirping sound when the batteries are low, which you may find stressful if it happens in the middle of the night. If you plan on buying this type of alarm, you should consider one that uses lithium batteries, as they have a longer run-time life.


Type of signal

Outside from the classic beeping sound, there are other types of signals that are meant to be efficient for people who might not be sensible to acoustic alarms. Many of the new smoke alarms use voice alerts which have been proven to be more effective for children. Some of them even offer the possibility to record your own voice to make it more noticeable.

Other smoke detectors use strobe lights that are especially recommended for hearing impaired people.

Nest Protect smoke & carbon monoxide alarm


However high is the alarm sound, it is possible that now and then you won’t be able to hear it unless you’re in the same room. This is why an interconnected smoke alarm system is suggested as the safest option. Such a system will make every alarm connected to it sound as soon as one of them is triggered. However, this feature is more expensive, and the installation is quite difficult. It will consume more power, and so it is usually encountered in hard-wired systems. But you can also find wireless, interconnected alarms which don’t need you to connect them in any other way than the electrical system if it’s the case.



Top rated smoke alarms in 2019


A smoke alarm doesn’t have the possibility of extinguishing the fire, but a good one will alert you and your family fast enough so you can leave the premises in time and call for help sooner. Therefore, it should be durable and easy to maintain, and you should choose one that follow the characteristics of your house and the things inside it. Buyers reviews are always a big help when you’re at your first purchase, so we warmly encourage you to read some. Meanwhile, the best smoke alarms you can find for sale are showcased below.


Our recommendations


Nest Protect S3000BWES


1.Nest Protect smoke & carbon monoxide alarm,

After a trip through all the features and functions of this appliance, you will remain in total awe. It is a photoelectric, interconnected, voice alert alarm system that will send you a text on your phone warning you if the alarm was triggered or if the batteries are about to discharge. Two wavelengths of light identify both types of fire, and it works on lithium batteries. Much like in the case of smoke detection, when the Nest detects traces of CO, it tells you where to look for it. The Nest also comes with a silence app, nighttime pathlight, self-testing features, and many more advantages that make it the best smoke alarm carbon monoxide detector we could recommend.


Buy from Amazon for ($97.95)






2.Kidde KN-COSM-BA

This convenient combination of smoke alarm and CO detector comes from one of the most appreciated manufacturers in the field. It is an ionized smoke alarm that uses AA batteries and has different alert types that announce fire, CO detection or batteries drainage. This model of Kidde also uses voice signal for its alerts and has a hush-mode feature that allows you to stop the alarm sound in case of false alarm. Different colored LEDs announce a change of the normal, safe state and the safeguard battery features prevents the alarm from being installed if the batteries have been forgotten.


Buy from Amazon for ($29.16)




First Alert SC9120B



In spite of the fact that it is one of the most affordable models available on the market today, the First Alert SC9120B is perfectly capable of doing what it’s supposed to. This device is a combination of ionization smoke alarm and carbon monoxide sensor, which means that you’ll be able to rest assured that your home will be protected all the time. The universal mount bracket makes it possible for owners to install the product by themselves, without requiring the services of a professional. Additionally, it should be noted that the SC9120B comes with a 9-volt battery and is backed by a seven-year warranty.


Buy from Amazon for ($35)




First Alert SA305CN


The majority of the current top rated smoke alarm reviews emphasize the solid built of the device and its capacity to fully protect any space. This model comes with a lithium battery that benefits from an enhanced lifespan. The SA305CN model from First Alert features a convenient and precise silence/test button, blinking power light and also a solid 85-decibel alarm. The package of First Alert also includes a 9-volt lithium battery, side battery drawer and a solid missing battery guard. This is why it comes as no surprise to see so many people consider this particular model as one of the best in the industry today.


Buy from Amazon for ($23.13)




First Alert SA320CN


First Alert SA320CN

First Alert always created efficient devices with the capacity to fully respond to unwanted perils. To this extent, the SA320CN makes no exception, reuniting vast technical expertise from the engineers working at First Alarm. This model utilizes both ionization and photoelectric smoke sensors that deliver optimal performance every time the on button is pushed. The SA320CN smoke alarm comes equipped with an intelligent detection technology that delivers positive results, making this model probably the best smoke alarm in 2019.


Buy from Amazon for ($29.43)




First Alert SA304CN3


The majority of the latest top rated smoke alarm reviews underline the efficiency and functionality of the First Alert SA304CN3 model, a product designed with care and attention in order to offer a prompt response in the event of unforeseen events. This ionization battery-operated smoke alarm comes with an accurate escape light and also features a convenient silence/test button, a solid blinking power light and also a strong 85-decibel alarm. The model comes with 9-volt batteries that are included in the basic package.


Buy from Amazon for ($10.99)




Unavailable products


Kidde i9040


Considered by thousands of satisfied users and technicians as the best smoke alarm in 2019 in terms of quality and functionality, the Kidde i9040 represents the best way to protect your home in the event of a fire hazard. The device operates on 9 V batteries that are included in the basic package. This model from Kidde has a test button that tests the unit’s electronic circuitry horn and precise battery function. Furthermore, the i9040 model from Kidde has a four inch diameter discreet and elegant design that blends with ease in any surrounding.






Best smoke alarm

Thousands of families consider the KN-COSM-B model from Kidde as one of the best smoke alarm in 2019, regarding quality and efficiency. This smoke alarm has a talking system that announces the hazard type detected which speeds up the reaction time. The unit can be installed with ease and without any problems at all. Furthermore, the KN-COSM-B smoke alarm has a battery safeguard that ensures that the unit won’t be accidentally mounted without the batteries inside. This is the reason more and more Americans are using with confidence the KN-COSM-B smoke alarm.