The average life of a water heater is 12 to 15 years if you take proper care of it. Proper care of a water heater involves:
The average live of a tankless heater is over 25 years and can even be used to heat your home as well through the use of a heat pump.
Slow drains bother a lot of people, be sure to call a plumber before it gets so bad that you end up with a clogged drain.
Do you need to flush more than once to clear your toilet? Then perhaps it's not vented properly or you could need a new one.
Many old homes don't have drains wide enough to accommodate garbage disposals. Before adding one to your kitchen you should have your plumber check the drains in the basement. If this step isn't taken you can just end up with a drain that often clogs.
If you need a shower or drain moved in your bathroom or kitchen it's time to call a licensed plumber that has experience with construction. Carl Priest, the owner of Northern Heating and Cooling has the experience your looking for.