I have been in this apartment 6 months and have never been able to have a warm shower longer than 3 minutes. I told my landlord and he replaced the water heater. But that didn't solve the problem. So he had a plumber come over and the plumber said maybe the water heater was defective. But then he said he was able to fill the bathtub before the hot water ran out so there is no problem with the water heater. What else could it be? My landlord doesn't respond to my emails, calls, or letters about this now. I'm assuming he is not going to fix the problem so I thought maybe I could do it myself or hire my own plumber to do it. I would give anything for a 5 minute shower!