You’ll need to replace the batteries every two to three years if you have this type of detector, though the alarm will still have a finite lifetime of between five and 10 years. Replaceable battery carbon monoxide detectors Buying this kind of carbon monoxide detector is a good idea if you want to avoid needing to replace the batteries every couple of years or so. The battery unit is tamper proof and some have lifetimes of around 10 years before they will need to be replaced. Types of carbon monoxide detector Sealed battery carbon monoxide detectorsĪs the name suggests, the battery for this kind of detector is sealed inside the unit once the battery runs out, the alarm will chirp, prompting you to replace the unit. We've found that the carbon monoxide detectors that failed our tests all cost around £10 or less - as do many other identical lookalike brands. Simpler models can cost as little as £17, while for an alarm with a screen and a long-life sealed battery, you'll typically pay £25 or more.īut pay £10 or less and you run the risk of buying an alarm that won’t be reliable and wouldn’t pass our rigorous carbon monoxide tests. Our carbon monoxide detector tests show that you’re more likely to end up with a safe and reliable carbon monoxide detector if you pay around £20. It pays to spend a little more when buying a safety product like a carbon monoxide detector. How much do carbon monoxide detectors cost? But if you have a fuel (gas, LPG, oil, wood) burning boiler, fire or stove, you should have one in every room where fuel is burned. If you live in a house or flat that’s entirely powered by electricity, you won’t need a carbon monoxide detector.
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