How many smoke detectors do I need?
Answer: Install smoke detectors in this order of priority and that will tell you how many to install.
- Outside bedrooms
- On each level of the house
- Inside bedrooms
Also, for a smoke detector to work properly, it has to be located where it will encounter the smoke as soon as possible. Therefore it needs to be on the ceiling, near the center of the room but away from fans. If it must be put on a wall, it should be at least 4 inches but not more than a foot down from the ceiling.
Where should I NOT install smoke detectors?
Answer:
- In the kitchen
- In the garage
- In a bathroom or just outside of it
- Any place where dust, fumes or steam is likely to be present
Are there different types of smoke detectors and which are the best?
Answer:
Smoke detectors differ by operating principle and power source. So there are Ionization detectors and photoelectric detectors. Ionization are quicker at detecting flaming fires while photoelectric are better at detecting smoldering fires. Combination units (both types in a single unit are now available and recommended).
There has been some controversy lately about the types of smoke detectors and the real answers are complex. Just remember than either type is far, far better than none.
Also important is whether they are hardwired to the house electricity or battery powered. Hardwired are generally more reliable and most new hardwired detectors also have a battery as back up power. This is a very good combination.
What are interconnected smoke detectors?
Answer:
Interconnected smoke detectors communicate with each other so that when one senses smoke, they all sound. This is the surest way of getting the early warning of a fire that is essential for adequate escape time.
Newly built houses in the last ten years have been built with interconnected smoke detectors installed in them.
How long do smoke detectors last?
Answer:
About 10 years. If yours are old and yellowed and more than ten years old you should test them regularly and plan to replace them before long.
When I replace my smoke detectors what should I look for in replacement units?
Answer:
The best smoke detector would be a hardwired, interconnected, dual sensor smoke detector with battery-back up. It would be U.L listed. Now there are interconnected smoke detectors which communicate with each other wirelessly-doing away with the need to run wires in your walls.
These won’t be the cheapest, but adding smoke detectors should be a thoughtful endeavor-hopefully not revisited again for a decade. There are even units now available that will tell you where the fire located valuable information in an emergency.
There are also combination smoke detector AND carbon monoxide detector units available. This is also a good innovation because it reduces the number of gadgets hanging around on your ceiling and walls.
I have a home security system with smoke detectors included. Is that adequate?
Alarm system type detectors are as good as any. However, often there are not enough of them installed to cover the house adequately. Also you may have regular hardwired smoke detectors and/or battery powered ones in addition to the alarm system. No combination of detector types harms the function of any though they cause some confusion when they sound. Just remember to exit the house, then come back in and check to see if there is a fire. When you update your detectors is a good time to retire old units of a different type.
My smoke detectors are sounding but I can’t smell any smoke or find a problem, should I be worried that there is a hidden fire somewhere?
Answer:
No. There is nothing magic about a smoke detector’s ability to sense a fire. It detects particulate matter in the air in concentrations you could smell and see if you were awake and near the source. If you can’t smell the smoke or find a fire after you’ve looked completely through the house you can be confident that you’re experiencing a false alarm.
If I need help installing a smoke detector, can I call the fire department?
Answer:
Yes. But please only call the fire department if you are NOT an able bodied adult-or if you are experiencing special difficulty after trying the installation yourself. Installing and maintaining smoke detectors is an important task, but should be handled like any essential house maintenance. The same of course is true for changing your smoke detector batteries.
Does the fire department give away smoke detectors?
Answer:
Yes, but again, only in special cases where it is apparent the need is unlikely to be met by normal means. In the past certain charities have provided us with inexpensive smoke detectors at no cost. Now, more expensive detectors are recommended and we have no free source for them. Typically we assist seniors who don’t’ have family or friends to help them.