Draining your water heater is an essential maintenance task that helps prolong its lifespan by removing sediment buildup inside the tank.
Sediment can reduce efficiency, cause strange noises, and even damage the water heater over time.
Follow this simple step-by-step guide to drain your water heater safely and effectively.
Step 1: Gather the Necessary Tools
Before you start, make sure you have the following items:
- A garden hose
- A flathead screwdriver or a wrench (depending on your drain valve type)
- A bucket (if needed for controlling water flow)
- Towels (to catch any spills)
Step 2: Turn Off the Water Heater
For Electric Water Heaters: Go to your home’s circuit breaker panel and switch off the breaker that powers the water heater.
For Gas Water Heaters: Turn the thermostat to the “Pilot” setting. This keeps the pilot light on but prevents the burner from heating the water.
Step 3: Turn Off the Cold Water Supply
Locate the cold water shut-off valve at the top of the water heater and turn it clockwise to stop the flow of water into the tank.
Step 4: Attach a Hose to the Drain Valve
Find the drain valve near the bottom of the water heater tank. Attach one end of a garden hose to the valve. Make sure the other end of the hose is placed in a safe drainage area, such as a floor drain, outside, or into a large bucket.
Step 5: Open the Pressure Relief Valve
Locate the pressure relief valve, typically near the top of the tank. Open the valve by lifting the lever. This allows air into the tank, helping the water to drain out more easily and preventing a vacuum from forming.
Step 6: Open the Drain Valve
Carefully open the drain valve using a flathead screwdriver or wrench, depending on the valve type. Allow the water to flow out through the hose. Be cautious, as the water will be hot.
Step 7: Flush the Tank (Optional but Recommended)
Once the tank has drained, you can flush out any remaining sediment by turning on the cold water supply for a few seconds. This will stir up and push out any debris at the bottom of the tank. Continue flushing until the water runs clear.
Step 8: Close the Valves
Close the drain valve and remove the hose. Close the pressure relief valve by lowering the lever.
Step 9: Refill the Tank
Turn the cold water supply back on to refill the tank. Keep an eye on the open hot water tap to let out any trapped air. Once a steady stream of water flows from the tap, close it.
Step 10: Turn On the Water Heater
For Electric Water Heaters: Switch the circuit breaker back on to restore power to the water heater.
For Gas Water Heaters: Turn the thermostat from “Pilot” to your desired temperature setting.
Step 11: Check for Leaks
After the water heater has refilled and heated up, check around the drain valve and pressure relief valve for any leaks. Tighten the valves if necessary.
Final Tips
Draining your water heater should be done annually or as recommended by your manufacturer to prevent sediment buildup and maintain efficiency.
If you’re uncomfortable performing this task or encounter any issues, don’t hesitate to contact PM Plumbing & Mechanical for professional assistance.
FAQs About Draining Your Water Heater
1. How often should I drain my water heater?
It’s recommended to drain your water heater at least once a year to remove sediment buildup and maintain efficiency.
2. What if my water heater drain valve is stuck?
If the valve is stuck, do not force it open. Contact a professional plumber to assist you, as forcing the valve could cause damage.
3. Can I drain my water heater without turning it off?
No, you should always turn off the water heater and let the water cool down before draining to prevent burns and damage to the unit.
4. How long does it take to drain a water heater?
Draining a water heater typically takes 20-30 minutes, depending on the size of the tank and the amount of sediment buildup.
5. What should I do if I find leaks after draining the water heater?
If you find leaks, check if the valves are properly closed. If the leaks persist, contact PM Plumbing & Mechanical for professional help.