Since no one can predict what type of fire might start in their home, the U.S. Fire Administration recommends that every home and place where people sleep have: Both ionization AND photoelectric smoke alarms, OR. Dual-sensor smoke alarms, which contain both ionization and photoelectric smoke sensors.
Our pick for the most reliable smoke alarm is the Kidde Dual Sensor Smoke Detector PI9010, because it can detect different types of home fires, making it one of the more unusual smoke detectors out there. We've tested a wide range of smoke detector models and compiled a list of the best options for households.
For best protection, it is recommended both (ionization and photoelectric) technologies be used in homes. In addition to individual ionization and photoelectric alarms, combination alarms that include both technologies in a single device are available.
Overall, we recommend the First Alert SA3210 because it combines photoelectric and ionization sensors that detect low and smoky fires as well as high flames. It's also battery-operated, so it's easy to install. If you're looking for a bargain, the Kidde I9030 is a basic smoke detector that does the job at low cost.
The manufacturer of Firex® branded products was acquired by Kidde in 2009. Invensys Controls no longer manufactures or supports these products. This website may contain some historical support documents, such as product user guides that may reference the Invensys Controls name or mailing address for product support.
Ionization vs photoelectric
An ionization smoke alarm is generally more responsive to flaming fires (imagine a fire where you can see the flame), while a photoelectric smoke alarm is generally more responsive to smoking, smoldering fires (such as a cigarette).
Can I install a hardwired smoke detector myself? While it is technically possible, it is not recommended. Working with your home's electrical system can be dangerous and complex, best left to a qualified electrician.
According to the United States Department of Homeland Security, and the California Building Code, at least one smoke detector needs to be placed in each of the following areas of your home: On Every Floor Level. In Every Bedroom. In Every Hallway Outside of a Bedroom.
Kidde is the only major manufacturer whose CO alarms currently meet the strict standards set forth by both UL and CSA. Accuracy: Look for a statement on the package about the alarm's accuracy level. If the CO alarm is UL Listed, then the accuracy statement will have been certified by UL, too.
Code One Safety recommends the use of smoke alarms that combine in one unit both ionization and photoelectric sensing technologies. For additional protection the NFPA recommends the use of multiple smoke alarms and heat detectors.
Reliability: Hardwired smoke detectors are renowned for their reliability. They are directly connected to your home's electrical system, ensuring a constant power source. It means they are less likely to fail due to dead batteries, providing continuous fire protection throughout.
Buy a photoelectric smoke alarm.
The cost of these battery-operated units starts at under $20.00. Photoelectric units are less sensitive to small smoke particles so they are more resistant to cooking vapors.
The other uses the radiation from a small amount of radioactive material to sense smoke. These types of detectors, also referred to as ionization chamber smoke detectors, are the most commonly used because of their sensitivity and ability to identify a wider range of fire conditions.
A “chirping” sound means that it's time to change batteries. Because alarm sensors wear out, replace each alarm at least every 10 years. Also, alarms have labels showing when they were made. If you don't see a label, the alarm is old and must be replaced.
For many years NFPA 72, National Fire Alarm and Signaling Code, has required as a minimum that smoke alarms be installed inside every sleep room (even for existing homes) in addition to requiring them outside each sleeping area and on every level of the home. (Additional smoke alarms are required for larger homes.)
Avoid near fresh air vents, ceiling fans or very drafty areas (drafts can blow the smoke away from the detector/alarm). Avoid installing closer than 4 inches from the wall or corners. Avoid installing closer than 12 inches from fluorescent lights.
The national average cost for installing a smoke detector is between $70 and $150, with most people paying around $112 to install a dual hardwired detector. At the low end of the spectrum, you pay around $44 for a battery-operated ionization detector.
Kitchen: Place a smoke detector at least 10 feet from cooking appliances to reduce the number of false alarms. Living areas, dens, bedrooms: Mount alarms on the walls or ceilings.
Smoke detectors last up to 10 years, at which point it's best to replace them for your safety.
Are fire alarms connected to the fire department? Fire alarms can be connected to the fire department through fire alarm monitoring, but the default option is a “single-station” fire alarm, which is not connected to the fire department. With fire alarm monitoring, the system is connected to the fire department.
Installing a smoke alarm costs between $70 to $150 on average, nationwide. According to Fixr, most people prefer installing a hardwired smoke detector, which typically costs around $112.
While ionization smoke alarms are extremely common—many sources cite 90% of homes as having them, though I suspect the number varies from country to country—some jurisdictions have effectively banned them, requiring homes to use a different type of smoke alarm.
Difficulty Detecting Quick-Burning Fires
One of the primary limitations of photoelectric smoke detectors is their reduced sensitivity to quick-burning fires. These types of fires, often ignited by fast-acting sources such as sparklers or electrical sparks, produce less smoke but more intense flames.