I have a old gas boiler under my sink in the kitchen. Next to the boiler is a little patch thing which says if dark colour its bad ie. it detects carbon monoxide. The sticker is a red colour with faint patches of white, I believe white was the original safe colour. I have had an engineer checking it once a year but never seen proof he is corgi registered and not had copies of safety certificate (didnt realise till I read here I should have one). I suspect it may be some guy employed by landlord and he just passes it regardless so want a independent check, if I have this check done and he finds a fault and more serious he finds a safety hazard can I claim the cost of this check back of my landlord? Also what is the best way to go about all this? thanks.
My sister works for a major gas company so I expect I can at least get it checked for a cheap cost luckily.
