The answer to 'why is my water heater' is that there are several common causes for water heater issues, including a faulty thermostat, sediment buildup, or a leak in the tank. Symptoms may include the water not getting hot enough, strange noises coming from the tank, or water leaking around the base.
Some potential solutions include adjusting the thermostat, flushing the tank to remove sediment, or replacing worn-out parts. However, it's important to know when to call a professional HVAC technician, as water heater repairs can be dangerous if not done properly.