Many users have found the advantages of propane heaters far outweigh the small additional running costs. The fuel is more completely burned and does not leave an oily residue as experienced with paraffin heaters. There is no odour, except for the few seconds during start-up and the units run a little more quietly since they do not need a compressor to drive the fuel to the burner.All propane heaters are fan assisted, are fitted with a piezoelectric ignition system for trouble-free starting and are supplied with a propane gas regulator. All heaters are tested and certified to CE standards by the German DVGW test house and are safe for use in the UK. All regulators are Calor approved.