I have a rental property with a water heater that is located in a storage shed that is next to a detached carport. So, the storage shed as about 10 to 15 yards from the house and the pipes are underground about maybe 6' to 8" deep that come up to the outside brick of the house and attach to pipes that come into the kitchen. There are two bathrooms and the water is not getting hot enough...maybe luke warm at best. The water heater still seems to be generating hot water from what I can tell. I'm having a plumber come out this week to take a look because it is beyond the scope of what I can do, but I wanted to get suggestions and recommendations on possible solutions so I can speak intelligently enough with the plumber. I don't know if the water is losing it's heat traveling from outside the house to inside the house or if there is some other issue. I'm wondering if there is a way to keep the water hot when it reaches the house or maybe add a smaller secondary water heater in the attic? What potential options are there? I'm trying to not spend a fortune replacing the water heater and trying to relocate it inside the house because there are not many options to put it inside the house. The attic is too small and there is very little other space to place it. I'm just curious what possible options there may be for this type of scenario. I used to live at the property before I started renting it out. So, I'm familiar with the issue, although I did get some hot water just not a lot. Thanks for any suggestions.