Had my L5 for 12 weeks or so,works great no need to turn it up too hot as it is hot enough on a low setting and have not missed a day of work during the cold spell due to water freezing as its been hot enough to bead to a point where very little water is left on glass,were I using trad or cold water I would of had to pack in.
And before the doubting thomas's start of with their objections / reasons as to why you should not use an L5 , I always have the rear door open when using it to clear out fumes,never drive with gas bottle turned on,always put down salted sand if water freezes on ground and never set on high when working on glass or it will crack and if cleaning a doorway blade it to save water freezing in a high traffic area,on conservatory roofs and cladding whack it up high and see how fast hot water cleans !
p.s when it is freezing ,take out the drain on the L5 overnight if not it might been curtains for ya !