Types of Carbon Monoxide Detectors

Carbon monoxide gas is created when fossil fuels don't burn properly. These fuels include petrol, natural gas, oil, coal and wood. Ovens, stoves, heaters and other common appliances and equipment often run on fossil fuels. However when these fuels burn incorrectly, carbon monoxide gas (CO) is created. It can poison and even kill humans and animals. Elderly people, children, pregnant women and small pets are all especially susceptible to CO poisoning. CO is so deadly because it is virtually undetectable by the senses: It is practically invisible; You can't hear it when it is leaking; You can't taste or smell it. The only sure way to detect CO is with carbon monoxide detectors. Thankfully, there are several different types currently available on the market:

Battery Operated CO Detectors:

These CO detectors typically have audible alarms and electrochemical sensors. They are recommended for single family homes, caravans, campers and boats. They are usually powered by replaceable AA batteries. Tamper proof units with lithium batteries sealed inside are also available. They are recommended for tenant housing and public buildings. Sealed batteries are guaranteed to last for the life of the CO detector, typically 5 to 10 years. It is important to remember that working batteries keep a CO detector's alarm functioning properly. However, working batteries do not guarantee that the internal CO sensor is still functioning. Make sure you understand how long the sensor is guaranteed to work in any CO detector you decide to purchase. Battery operated CO detectors cost between £12 and £30. Popular brands are Kidde, Honeywell, Aico and FireAngel.

Mains Powered CO Detectors:

These CO detectors also have audible alarms. Most have electrochemical CO sensors, as well. They are permanent installations. They operate on building mains power. They are recommended for tenant housing complexes, public buildings and organisations responsible for public safety. They are tamper proof, so only authorised individuals can access them. Many units feature battery back-up in case there is a power outage. Most require replacement of the entire unit after approximately 5 years due to electrochemical sensor wear-out. However, some units feature replaceable sensor modules so there is no need to replace the entire detector when the sensors wear out. All mains powered detectors are typically more expensive then battery operated units used in single family homes. Per unit cost is anywhere from £30 to £60. Popular brands are Honeywell and Aico.

Digital Display CO Detectors:

These Co detectors are battery powered with either replaceable AA batteries or tamper proof, sealed lithium batteries. They feature a Liquid Crystal Display (LCD) that provides a continuous reading of CO levels. Their alarms will sound if the monitored CO level become a danger. Again, while the batteries of these units may be replaceableor guaranteed to last a certain amount of time, CO sensor life could be less. Always refer to the manufacturer's guide for sensor life information. CO detectors with digital displays cost between £17 and £30. Popular brands are Kidde, Aico and FireAngel.

Bio-Mimetic CO Detectors:

These units are commonly referred to as "colour-change" or "black spot" CO Detectors. They contain a synthetic gel material that mimics the haemoglobin in human blood. When CO is present, the synthetic haemoglobin gel changes color. These sensors aren't always as accurate as other sensors. This is because the gel frequently gets contaminated, causing false alarms. In addition, many only rely on a visual display and don't have loud alarms like highly recommended CO detectors do. A visual indicator is useless during the night when everyone in a household is typically asleep.

CO is a extremely hazardous gas to humans and animals. Because it can be lethal, it is critical to detect a CO leak within the shortest period of time so corrective action can be taken and so fatalities can be averted. Purchasing the best type of carbon monoxide detectors for your home, business and recreational vehicles is the best line of protection. No matter what type you chose, make sure they all have audible alarms that can wake your family in the middle of the night if necessary!

Note: Always purchase carbon monoxide detectors that have the British Standard EN 50291, BSEN 50291, or CE mark. Also ensure they contain the British or European Kitemark or an accepted equivalent to indicate they have been properly tested.

Laura Ginn understands the need to make your home carbon monoxide safe by installing a carbon monoxide detector. Visit http://www.uswitch.com/boilers/guides/carbon-monoxide-safety/ and learn more about carbon monoxide safety.