working at an average of £10 an hour ( some are below this, some are above ), you would have to work 90 ( 45 hours or 5 days at £20 per hour ) hours or 11 and a quarter 9-5 days to pay for the system not including fitting it in your van. So the question is, is it worth it. So to be worth it the hot water will have to save you more than 90 hours work to be worth it at 10 per hour, if you earn more then it will take less time to make it pay. But you also have the hastle of an extra thing to do at the job setup and gas bottles to buy. So will the winter lose you 90 hours of work? I doubt it, so this is a long term investement. It will only pay off after say 2 plus years. Or have I got this all wrong? Luke
ps. another way of thinking of it is, 90 £10 jobs, it will take 90 £10 jobs to pay it off no matter how fast you work!!!!