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albatross
Room sensing carbon monoxide alarms are not an alternative to being able to see the flue and you will still need to have inspection hatches fitted so that the flue system can be checked. It is recommended that inspection hatches are fitted as soon as you are able to do so. From 1 January 2013, any Gas Safe registered engineer will classify the boiler as At Risk, this means that they will turn the boiler off, with your permission, and formally advise you not to use it until inspection hatches have been fitted in appropriate
fron gas safe site
fron gas safe site