Installed in a campervan, yes they are very good, they will keep you as warm as you like. You can run them overnight from a fully charged lesuire battery & they use gas at the rate of around 140grams/hr. 1000grams=1 kg so you can work out from that how long your gas bottle should last, ie around 27hrs continuous running from 3.9kg Calor propane bottle.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets