by tonyfu »
Sun Sep 09, 2007 8:47 am
Hi, I don't know if you'll be able to get a combined gas/CO alarm because they need to be sited at different heights according to the weight of the gas. CO is light and so it rises when mixed with air. A CO alarm should be sited higher up than a gas alarm. Natural gas is heavier so it falls to the bottom of a room when mixed with air. We have separate alarms for these in our campervan.
Our CO alarm was bought off Ebay. The gas alarm was from Lidl (discount supermarket) but they only get them in occasionally. Could also try Argos or B&Q. When searching the internet you could also ask your web browsing software to only search UK sites.
Tony