How much does anyone use their gas room heater , have only been away twice since I had the van also lived in van until mid november last year while house was being repaired and have not used the gas heater at all its also a bit close to the fixed bed so was mulling over removing heater and using area for storage, wont use van through winter and have a 240v 2 stage (400w/400w) infrared heater i could run from inverter if necessary,