used the l5 heater for the fist time saturday, and its really good. found it a little hard to work out how to use it but there now. i found by the time the water came in hot i nearly cleaned the house by about 2 windows, if people are going to get one use brass on the hot side as found it started to come lose doed any one use thremo bore hose as my normal 8 mm its like a elastic band and when you turn the hot of its cold within 3 seconds and would it be worth it to get the thermal hose what you think.... thanks carl