Many users have found the advantages of propane heaters far outweigh the small additional running costs The fuel is more completely burned & does not leave an oily residue as experienced with paraffin heaters There is no odour except for the few seconds during startup & 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 troublefree starting & are supplied with a propane gas regulator All heaters are tested & certified to CE standards by the German DVGW test house & are safe for use in the UK All regulators are Calor approved