How many smoke detectors do you need in your home?
This means that if you have a four-bedroom house, and all of the bedrooms are accessed from a second-floor hallway, you need to have a smoke detector in each bedroom and one in the hallway outside the bedrooms. One smoke detector must be present on every floor of the house, including basements and attics.
If this is not possible, install the Smoke Alarm at least 4 inches (102 mm) from the wall or corner. For wall mounting (if allowed by building codes), the top edge of Smoke Alarms should be placed between 4 inches (102 mm) and 12 inches (305 mm) from the wall/ceiling line, below typical “dead air” spaces.
- One of the more common installation problems with smoke detectors is installing them too close to air vents. NFPA 72 recommends that they should not be installed closer than 3 feet from any supply air diffuser or return vent. If they are too close to the supply, smoke may not reach the detector.
- When a very large residence contains floor areas greater than 1,000 square feet (excluding garage areas), the code requires smoke alarms installed on the ceiling, and all points on the ceiling must have a smoke alarm within 30 feet or have an equivalent of one smoke alarm per 500 square feet of floor area.
- Answer: The National Fire Protection Association recommends homes should have smoke alarms installed inside every bedroom, outside each sleeping area and on every level of the home, including the basement. So that means a 2 story, 3 bedroom house needs a minimum of five smoke alarms.
In order to ensure that your home has maximum protection, it's important to have a CO detector on every floor. Five feet from the ground. Carbon monoxide detectors can get the best reading of your home's air when they are placed five feet from the ground. Near every sleeping area.
- According to the carbon monoxide guidelines of the National Fire Protection Association (NFPA 720, 2005 edition), all carbon monoxide alarms “shall be centrally located outside of each separate sleeping area in the immediate vicinity of the bedrooms,” and each alarm “shall be located on the wall, ceiling or other
- = incorrect Carbon monoxide is not heavier than air - in fact it is slightly lighter as CO has the RMM of 28 whereas air is slightly more than this. It is therefore almost neutral density. However in a normal room, thermal convection current dominate transport of gases in a room.
- Kidde KN-COPP-B-LPM. This digital carbon monoxide alarm is a popular choice on Amazon—number three out of all CO detectors. It's equipped with the best sensor in the industry, an electrochemical sensor, to help detect carbon monoxide in your home.
One is a “fast flame” fire, the other is for smoldering fires. In tests, ionization alarms will typically respond about 30 to 90 seconds faster to “fast-flame” fires than photoelectric smoke alarms. However, in smoldering fires ionization alarms respond an average of 15 to 50 minutes slower than photoelectric alarms.
- However, they are triggered by heat and not smoke so are unlikely to detect vapour from electronic cigarettes. The vapour from ecigs does set off smoke detectors, but only when exhaling or blowing the vapor towards the smoke detector at close proximity. It's not much different than smoking a cigarette in that regard.
- In order to ensure that your home has maximum protection, it's important to have a CO detector on every floor. Five feet from the ground. Carbon monoxide detectors can get the best reading of your home's air when they are placed five feet from the ground. Near every sleeping area.
- There are two main types of smoke alarm for home use: ionisation and photoelectric alarms.
- Ionisation alarms.
- Photoelectric alarms.
- Dual sensor alarms.
- Other types of alarms.
- Standards Australia certification or ActivFire registration.
- 10-year battery.
- Test button.
- Hush button.
Updated: 16th October 2019