The answer to 'my water heater installation is leaking' is that there are several common causes, including improper installation, worn gaskets or seals, excessive water pressure, and corrosion. Symptoms may include pooling water around the heater, dripping, or water damage. Solutions can range from tightening connections, replacing washers or gaskets, adjusting the pressure, or in some cases, replacing the entire water heater.
If the leak is minor and you feel comfortable doing basic plumbing work, you may be able to fix it yourself. However, if the leak is significant, the water heater is older, or you're unsure of the cause, it's best to call a professional plumber. They can properly diagnose the issue and make the necessary repairs to prevent further damage.