Sealey space warmer propane heaters sealey lp150 space warmerreg propane heater from sealey 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 heatersthere 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 heaters are fan as