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How Many Smoke Detectors Do I Need in My Home?

Updated on May 6, 2021 by Jessica Parker
How Many Smoke Alarms Do I Need in My Home?

How many smoke detectors do I need in my home? This is a question that every person buying a smoke detector asks himself. Smoke detectors avoid serious damages and fire hazards, provided they can detect the fire on time. And if it is a big house, can one detector perform this function efficiently? This is what we are going to answer in this blog today. We are going to clarify all your doubts regarding smoke detectors. This will help you take a calculated risk and buy detectors easily.

How Many Smoke Detectors Do I Need?   

As mentioned before, smoke detectors like First alert ionisation smoke detectors should be placed in every room and outside every sleeping area. For instance, a two-story home with five bedrooms should have at least seven smoke detector. There is no such thing as having too many smoke detectors, so you can install as many as you want for the safety of your family.  

Where to Install Smoke Detectors?   

Smoke detectors should be installed in specific locations and away from stoves, dishwashers, cloth dryers and other products that generate heat. Since the natural tendency of the smoke is to rise vertically up, the best location for smoke detectors in the centre of the ceiling.   


A smoke detector’s job is to identify any extra smoke or gas in the house and prevent hazards. It is imperative to know about the smoke detectors that exist to make a wise choice. The section below talks about two of the major smoke detectors. Knowing about them and their various differences will help you make a wise decision easily.

Ionized Smoke Detectors   

Ionised smoke detectors like First Alert have electrodes that produce a low current through the ionized air. If any type of smoke or gas is predicted, the current gets disrupted, and the alarm goes off, alerting the housemates. These are better in detecting small flames or fires too.   

Photoelectric Smoke Detectors   

Photoelectric Smoke Detectors detect the fire through light. They have a light sensor and a light beam for the detection process. Generally, the light beam is away from the sensor, but when there is fire, the smoke particles scatter the beam. This causes some light to fall on the sensor and it signals the residents with an alarm.

The Key Takeaway

Now that you know the basic differences between the two, go ahead and look out for their different products. Although Ionized smoke detectors are efficient, it's the photoelectric ones that are popular. This is because they are relatively more sensitive, efficient and advanced.

When the question arises on, 'how many smoke detectors do I need in my home?' The answer is simple, one in every room if it's a two-story and two or three detectors if it is a smaller house. For more buying options, head over to Bestviewsreviews.com. We review and recommend the best products only based on their popularity, quality, and performance

Created with Raphaël
Created with Raphaël
Created with Raphaël

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