A leaking water heater can quickly turn from a minor inconvenience to a major headache for any homeowner. Whether it’s a slow drip or a sudden gush, water heater leaks can cause property damage, increase your water bills, and even pose safety risks. Knowing how to respond when your water heater leaks is essential to protecting your home and plumbing system.
In this guide, we’ll walk you through the key steps to take if your water heater is leaking and how to determine when it’s time to call a professional.
Common Causes of Water Heater Leaks
Before diving into what to do, it helps to understand why your water heater might be leaking:
- Corrosion or rust: Over time, the tank can corrode, leading to leaks.
- Loose or damaged plumbing connections: Pipes or fittings around the heater may become loose or cracked.
- Faulty pressure relief valve: This valve releases excess pressure but can fail or get stuck.
- Drain valve issues: A leaking drain valve may cause water to drip continuously.
- Cracks in the tank: Older tanks may develop cracks that allow water to seep out.
Step 1: Turn Off the Power or Gas Supply
Safety is the first priority. If you have an electric water heater, locate your circuit breaker and switch off the power to the heater. For gas water heaters, turn off the gas supply valve to prevent any potential hazards. This step helps prevent electrical shocks and gas leaks.
Step 2: Shut Off the Water Supply
Next, turn off the cold water supply valve leading to the water heater. This valve is usually located near the top of the unit. Shutting off the water will stop the leak from worsening and help minimize water damage.
Step 3: Drain the Water Heater (If Necessary)
If the leak is significant or you plan to call a professional, you may need to drain the tank. Attach a garden hose to the drain valve at the bottom of the heater and direct the water to a safe drainage area. Open the valve carefully to let the water flow out. Draining the tank can prevent further leaks and ease repair or replacement.
Step 4: Identify the Source of the Leak
Try to determine where the water is coming from. Is it dripping from a pipe connection, the pressure relief valve, or the tank itself? This information will help a plumber diagnose the problem more efficiently. If you notice rust or corrosion around the tank, it might indicate that the water heater needs replacing.
Step 5: Call a Professional Plumber
While some minor leaks can be fixed with simple tightening or part replacement, many water heater issues require professional expertise. Attempting DIY repairs on a leaking water heater can be dangerous and may cause further damage. A licensed plumber can perform a thorough inspection, repair faulty components, or recommend a replacement if needed.
Preventing Future Leaks
Regular maintenance can extend the life of your water heater and help prevent leaks. Flushing the tank annually removes sediment buildup, which can cause corrosion and reduce efficiency. Testing the pressure relief valve and inspecting plumbing connections periodically also helps catch potential problems early.
When to Contact Plumbing First
If your water heater is leaking, don’t wait until it becomes a costly emergency. Contact Plumbing First at for fast, reliable water heater repair and replacement services. Our experienced plumbers will diagnose the problem, provide expert solutions, and ensure your home’s plumbing stays safe and efficient.
By taking prompt action and trusting the professionals, you can protect your home from water damage and enjoy reliable hot water for years to come.