After reading your message, im sure there is the clear problem of exchanging your existing calor bottle once in France, as you may or may not know, they do not exist on the continent!May i suggest what i had fitted to my motorhome, refillable cylinders that are topped up with LPG at a filling station. France has more than they uk over 1300 + its cheaper. I used those from www.leisuregasservices.co.uk who offer a mobile installation service,never regretted it!I always travel into France and this has been a godsend, never having to take or exchange another bottle again.