Knowledge Builders

how do i choose a smoke detector

by Kaela Schaden DVM Published 2 years ago Updated 2 years ago
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Choosing a smoke alarm is based on the design of your job site and the type of fire that is most likely to occur on the particular job site. However, regardless of the type of smoke alarm or detector, you select, proper installation, testing, and maintenance of the device are very important.

Get a sense of sensors.
Ionization sensors are best for detecting smoke from fast, flaming fires, but they aren't very good for smoldering fires. Photoelectric sensors are best at detecting a smoldering fire, such as one caused by a cigarette left on a sofa, but they fall short at detecting open flames.
Apr 12, 2022

Full Answer

What are the best smoke detectors?

Best smart smoke detector: Nest Protect, $113.05 from Amazon The Nest Protect features both a carbon monoxide and split-spectrum smoke detector that detects both fast and slow-burning fires and delivers clear verbal instructions to explain why its sensor was triggered and what you should do next. Best smoke detector for smoke only: X-Sense SD01, $17.99 from Amazon

How do I know if my smoke detector is bad?

  • The detector often gives false alarms.
  • The alarm emits short beeps regularly without anyone touching it.
  • Frequent kitchen smoke has caused it to activate often, which may wear it out faster.

What to consider when replacing hard-wired smoke detectors?

Consider replacing smoke detectors when:

  • The smoke detectors are more than 10 years old
  • The existing system isn't functioning right
  • You are remodeling your home
  • Building an addition or converting existing space to a bedroom

What is the best type of smoke alarm?

Types of smoke alarms

  • Ionisation alarms. These contain a very small amount of radioactive material, which reacts to particles emitted in a fire and sets off the alarm.
  • Photoelectric alarms. These contain a photo cell and a light beam shining away from the cell. ...
  • Dual sensor alarms. ...

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How do I know what kind of smoke detector I need?

You can do so by taking the smoke alarm down and look at the back for either “Photoelectric” or “Ionization,” or a symbol with the letter “P” or “I” on the back. Once you figure out which type you own, purchase the other type and install one next to each unit.

How do I choose a smoke detector for my house?

Know your types of smoke alarms. Ionization sensing alarms may detect invisible fire particles (associated with fast flaming fires) sooner than photoelectric alarms. Photoelectric sensing alarms may detect visible fire particles (associated with slow smoldering fires) sooner than ionization alarms.

Which type of smoke detector is best for residential homes?

Photoelectric smoke detectors are best at detecting the large particles typical of smoky, smoldering fires but poor at detecting fast, flaming fires. Photoelectric units are less prone to false alarms from burnt food, so they may be a better fit in kitchen areas.

Which is better smoke detector photoelectric or ionization?

Photoelectric smoke alarms respond much faster (15 to 50 minutes faster) to smoldering fires – fires which move more slowly but produce the most smoke, the element of residential fires most responsible for fatalities – than ionization alarms.

Which is better hardwired or battery smoke detectors?

Once installed, though, hardwired smoke detectors are better than their battery-powered counterparts in every major aspect—safety, efficiency, maintenance and compliance with local codes.

Which brand is better Kidde or First Alert?

First Alert has better features than the Kidde because of the alarm system with a verbal warning of the threat.

What are the 3 types of smoke detectors?

There are three types of smoke alarms, ionization, photoelectric and a combination of the two which is commonly called a “dual” detector.

Is there a difference between a smoke alarm and a smoke detector?

Put simply, a smoke alarm detects smoke and sounds an alarm. A smoke detector is strictly a sensing device only, which senses the products of combustion (smoke) and sends a signal to a building's fire alarm system to activate an audible, and sometimes visual warning or alarm.

Are 10-year smoke detectors good?

Smoke alarms have a limited lifespan. The National Fire Protection Association (NFPA) recommends every smoke alarm be replaced after 10 years and that regular batteries be replaced every six months. With 10-year sealed battery alarms, battery replacements and late-night battery chirps are eliminated for a decade.

What brand of smoke detector is best?

Smoke alarm and detectors reviewsGoogle Nest Protect: Best overall. Best overall. Google Nest Protect. ... First Alert SCO7CN: Budget pick. Budget pick. ... X-Sense: Best digital display. Best digital display. ... First Alert SA320CN: Best basic. Budget pick. ... Kidde Hardwired Smoke Detector: Best battery changes. Best battery changes.

How many smoke detectors should a house have?

According to the National Fire Protection Association (NFPA), smoke alarms should be installed on every level of your home, including the basement. Fire detectors should also be installed inside of every bedroom and outside of each sleeping area.

Where do you place ionization smoke detectors?

Where should smoke detectors be placed? According to the NFPA, the best place for smoke detectors is inside and outside the bedrooms and on every level of your home, including the basement.

Should smoke detectors be on wall or ceiling?

Mounting the smoke alarm on the ceiling in the center of the room places it closest to all points in the room. Ceiling mounting is preferred in ordinary residential construction. However, in mobile homes, wall mounting on an inside partition is preferred to avoid the thermal barrier that may form at the ceiling.

Where in the bedroom should a smoke detector be placed?

Smoke rises, so mounting smoke detectors high -- usually on ceilings -- is the best option. If you choose to mount a smoke alarm on a wall, placing it less than 12 inches from the ceiling would be best. Find a spot away from air ducts, windows or anywhere with a draft that could keep smoke from reaching the detector.

Where should a smoke detector be placed in a kitchen?

In the kitchen, smoke detectors should be installed at least 10 feet away from cooking appliances to minimize the number of false alarms. Smoke rises, so smoke alarms should be placed high on walls or ceilings.

Where should co2 detectors be placed?

The International Association of Fire Chiefs recommends a carbon monoxide detector on every floor of your home, including the basement. A detector should be located within 10 feet of each bedroom door and there should be one near or over any attached garage. Each detector should be replaced every five to six years.

Why are ionization alarms good?

This is because there is an electric current inside the device that can interfere with the smoke and thus signal. When it comes to photoelectric detectors, their main advantage is the detection of larger particles.

How to install a smoke detector?

The simplest way to install a detector is to connect the whole house to one system. This way, each alarm will be networked with each other and you will automatically receive news of the fire. Otherwise, the detector would need much more time to detect smoke if the rooms are quite far away. Then a big problem can occur. Of course, this situation is possible only in a big house. This system should be installed by a professional who will know what it is doing because it is still about connecting the detector to the electricity at home. You can also find wireless detectors on the market.

What is the advantage of photoelectric detectors?

When it comes to photoelectric detectors, their main advantage is the detection of larger particles. Here you can notice a clear difference between the two mentioned types of alarms, and in that case the ionization is much more sensitive to external influences.

What to consider when buying a smoke detector?

This factor is crucial when buying a smoke detector. First of all, you need to consider the size of your house, the number of rooms, their layout and how to use them. Our advice is to secure every part of the house equally. In addition to the alarm in each room, it is necessary to fill the hallway with this device.

Why is there a heat detector in the kitchen?

So there is a heat detector. This device is usually placed in the kitchen to detect the potential danger due to a sudden rise in temperature. When it reaches a certain temperature, it means that a fire has occurred. This device works on that principle.

How long do you have to evacuate if you have a fire?

If a fire occurs due to an accident in your home, you have very little time left to evacuate. Then you will only have a few minutes. However, this is when a fire occurs without the presence of a smoke detector. With this device, you have at least twice as much time to go out.

What are the advantages of combined alarms?

We must also mention the characteristics of the combined alarms, and the main advantage is the addition in the form of a carbon monoxide sensor. This sensitivity can also be a drawback, as they usually need more frequent replacement. However, if you are dealing with fuel or something similar then it would be wise to take a device like this.

How many smoke alarms do i need?

This varies on the state and local laws as well as the size of your home. Some counties have stricter requirements than others. It’s advised that you consult your local code and building department or fire department for the specific regulations in your area.

Can a smoke alarm detect carbon monoxide?

Smoke alarms don’t detect CO2 but there are combination alarms that can detect both carbon monoxide and smoke.

Can a smoke alarm detect incense, candles, vape, cigarette or marijuana smoke?

Perhaps. It really depends on how close you are to a smoke detector and how confined the space is. Your alarm is less likely to go off if you’re vaping since it’s vapor and not smoke, however, any other smokey substance can trigger alarms, especially ionization sensors since they are known to be more sensitive.

Can you get smoke alarms fitted for free?

Yes ! If you cannot afford one, contact your local fire department and ask them if they’re able to install alarms in your house for free. Some organizations, like the Red Cross, also provide free alarms and volunteers will come out to install them for you and give you additional safety information.

Why do we need smoke detectors?

The purpose of a smoke detector isn’t to prevent a fire (although it helps) but rather to alert the people so they can evacuate before the smoke or toxicity in the air overwhelms the building, especially if the individuals are sleeping.

Can you hardwire a smoke detector?

When you’re deciding on a smoke detector for your home, I would suggest to keep it as simple as possible. Choose an alarm that uses both ionization and photoelectric technologies, that can be hardwired with the battery back-up and has the possibility of interconnecting with the other alarms around your home. One of the best units on the market with all of these features is the First Alert 3120B Hardwire Photoelectric and Ionization Smoke Alarm.

Do you need a smoke alarm in a commercial building?

Yes, smoke alarms are required by law for residential and commercial structures in the United States. This document describes the laws pertaining to most of the states as of May 2010.

What is a split sensor alarm?

Our take: A split sensor alarm with both photoelectric and ionized detectors that features a voice alert rather than a tone or a beep, making it more effective for waking up a sleeping child.

What is a split spectrum smoke detector?

The Split Spectrum sensor detects both smoldering and fast-burning fires quickly with fewer false alarms characteristic of most ionization sensors.

What is an ionization alarm?

Ionization alarms ionize the air between a positive and negative electrode, which creates a current inside the chamber. Smoke particles disturb the current balance, sending a signal to an integrated circuit that sets off the alarm.

What is a photoelectric alarm?

Photoelectric alarms are light sensors containing an infra-red LED. Every few seconds, the device pulses a beam of light into the sensor chamber to check for smoke particles. When smoke enters, the infrared light is scattered and hits the photodiode light receptor, triggering an alarm.

Can a dual smoke alarm trigger a fire?

Made with both a photoelectric sensor and an ionization sensor, a dual alarm smoke alarm will trigger for either type of fire (flaming or smoldering). However, the ionization mechanism makes them less than ideal for the kitchen.

What type of smoke detectors are used to detect smoldering fires?

Photoelectric: Photoelectric-type smoke detectors aim a light into a chamber at an angle away from the sensor. When smoke enters the chamber, it reflects light onto the light sensor and will trigger the alarm. Photoelectric smoke alarms respond faster to slow-burning smoldering fires. A smoldering fire can burn for hours and produces large amounts of smoke. Common causes of smoldering fires are cigarettes and cigars, electrical shorts, and fireplace embers.

What is an ionization smoke alarm?

Ionization: Ionization smoke alarms have a small amount of radioactive material between two charged plates. The charged plates ionize the air and cause current to flow between the plates. During a fire, the smoke interrupts the current and sets off the alarm. Ionization smoke alarms tend to respond faster to smoke produced by flaming fires. Flaming fires ignite quickly, produce large flames, and tend to produce less smoke than a smoldering fire. Common causes of a flaming fire are combustibles that burn quickly such as gasoline and other flammable liquids; newspapers; cleaning products; and kitchen grease fires.

How much does a smoke detector cost?

Smoke detectors are an affordable resource and tool to alert a homeowner to a fire. A basic smoke detector can cost as little as $10, with the average cost at $25. This minimal investment can help save lives and protect property from extensive fire damage.

What are the different types of smoke detectors?

There are three types of smoke detectors available for residential properties – ionization smoke detectors, photoelectric smoke detectors, and dual-sensor smoke detectors. While all three types will detect smoke, they work slightly differently.

How much does a smoke detector cut the risk of serious injury or death in a home fire?

According to the National Fire Protection Agency (NFPA), working smoke detectors cut the risk of serious injury or death in a home fire by nearly 55%. Other interesting smoke detector statistics include:

Why does my smoke detector fail?

Missing or disconnected batteries are the main reason that a smoke detector fails. In fact, 41% of all failed smoke detectors were missing a power source.

How to prevent dirt from blocking smoke alarm?

Gently vacuum or dust your smoke alarm monthly to prevent dirt from blocking the sensor.

Which Smoke Detectors Should You Get?

First of all, smoke detectors are absolutely critical to get in your home and might be legally required, depending on your local or state government. If you don't have any installed, you'll want to get on that right away!

Wired vs. Battery Smoke Detectors

Wired and battery-powered detectors both have their pros and cons, although some governments require people to use particular types. You can view your state's regulations to see what your requirements are, but it's a good idea to know what to choose once you know your options!

Installing Smoke Detectors

When you install smoke detectors in your home, there are a few key things you'll want to keep in mind.

Maintaining Smoke Detectors

The most important thing is to replace your smoke detector battery (if you have any) whenever it gets low. Don't let that chirp continue until you don't notice it anymore! Even if your batteries aren't chirping, it's recommended to replace them annually to make sure everything is in top condition.

Replacing Smoke Detectors

Most smoke detectors should be replaced every ten years, or sooner if they break down! If it's a simple battery smoke detector, it's a simple matter of removing it from its bracket, changing the battery, then putting it back.

Get More Help With Your Home's Electronics

If you'd like to learn more about smoke detectors or any other electronics, Buell Electric would love to help!

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Differences Between Smoke Detectors

Advantages and Disadvantages

  • We mentioned the ionization alarm and its main advantage is that they detect electricity very early. This is because there is an electric current inside the device that can interfere with the smoke and thus signal. When it comes to photoelectric detectors, their main advantage is the detection of larger particles. Here you can notice a clear difference between the two mentioned t…
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Differences Considering The Power Supply

  • You need to think about how to power the smoke detector. When it comes to this you have more options ahead of you. So you can choose between those that change periodically, and some have batteries designed in this way that can be changed every 10 years. At x-sense.comyou can find a smoke alarm that has been manufactured to last 10 years. Also, there are those batteries that ru…
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The Layout of The Rooms and The Size of The House Are Important

  • This factor is crucial when buying a smoke detector. First of all, you need to consider the size of your house, the number of rooms, their layout and how to use them. Our advice is to secure every part of the house equally. In addition to the alarm in each room, it is necessary to fill the hallway with this device. The simplest way to install a det...
See more on edmchicago.com

Label

  • The label you are interested in in this case is UL. Devices containing this mark have been tested and approved by the authorities in this field. That way, you will know that these are reliable manufacturers who respect all the regulations necessary for quality production. This means that all devices except are subjected not only to testing but also to sample testing. This is a sign tha…
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Easy Maintenance

  • Our advice is to choose one that does not require much effort during maintenance. The basic rule is to remove dust from them and that is enough to do once a month. This is done to avoid blocking the sensor and activating the alarm.
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1.How to Choose a Smoke Detector - x-sense.com

Url:https://www.x-sense.com/blogs/tips/how-to-choose-a-smoke-detector

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