Proper Procedure for Draining Your Hot Water Tank

Draining your hot water tank, also known as bleeding air, is a crucial maintenance step ensuring clean water supply and prolonging the appliance's lifespan. Learn how to drain your hot water tank at home with detailed guidance from Mytour.

Guide on How to Properly Drain Your Hot Water Tank

Draining the hot water heater involves flushing out dirty water and sediment to clean and maintain the operational efficiency of the appliance. Over extended use, dirt, impurities, and metals in the water can accumulate inside the hot water tank.

Draining is the process of releasing dirty water from the hot water tank

Draining the hot water heater provides benefits such as:

- Removing dirt and impurities: Draining the tank helps eliminate accumulated dirt, sediment, and impurities like sand and lime in the water. This enhances the efficiency of the hot water heater and extends its lifespan.

- Ensuring clean water quality: Draining the tank helps eliminate dirty water and yellowish water that can accumulate in the hot water heater. This ensures that the hot water supplied to various devices and applications is clean and safe to use.

- Enhancing efficiency and saving energy: When the hot water heater accumulates dirt and sediment, the operational efficiency of the appliance decreases. Draining the tank helps the hot water heater operate stably and more efficiently, leading to energy savings and reduced electricity usage costs.

- Preventing breakdowns and incidents: Regularly draining the hot water tank helps prevent incidents and malfunctions caused by the buildup of dirt and sediment. This minimizes the risk of damage to the hot water heater and ensures its stable operation.

Step 1: Preparation

Firstly, disconnect the hot water heater from the power source and ensure the tank has completely cooled before proceeding with draining the hot water heater.

Step 2: Clean the pressure relief valve

Inspect the pressure relief valve for any signs of leaks, explosions, or other abnormalities. Then, use a soft cloth to clean the external surface of the pressure relief valve, the plug socket, and the pronged foot of the pressure relief valve.

Clean the heat exchanger in the hot water tank

Step 3: Clean the burner and tank interior

Use a soft cloth or sponge to clean the heat exchanger. Ensure the heat exchanger is dry before reinstallation.

Open the tank valve to drain any remaining water, remove the tank interior, and clean away dirt using soap. 

Step 4: Inspect the Magnesium rod

Examine the Magnesium rod to ensure there is no corrosion, preventing the risk of dangerous electrical leaks. If the Magnesium rod is corroded approximately 60% or more, users should promptly replace the component to ensure safety for all users.

Magnesium rod in the hot water heater corroded on the right side

Step 5: Drain the tank

Locate and identify the drainage valve on the hot water heater. The drainage valve is usually positioned at the bottom of the tank or near the base.

Open the drainage valve enough to let water flow out of the tank. Ensure the water is collected in the container you have prepared.

Continue draining the water until it runs out completely, clear, and free of any dirt or debris.

Step 6: Reassemble the components

Once you've completed draining the tank, reassemble the components in their original positions.

Ensure all connections are securely tightened, and no components are misplaced.

Step 7: Perform a trial operation

After bleeding the air from the tank, operate the hot water heater and observe normal water flow without any air bubbles. Then, close the hot water valve and power up the unit.

Wait until the hot water reaches the exact temperature to complete the hot water tank draining process.

Perform a trial operation to ensure the water heater functions normally.

- Turn off the power: Before starting the draining process, ensure that the hot water heater is powered off. This ensures safety during the air bleeding process of the hot water tank.

- Read the user manual: Carefully read the user manual of the hot water heater to understand how to drain it correctly. Each type of hot water tank may have different draining procedures.

- Ensure the hot water heater is cool: Before draining, wait for the hot water heater to cool completely to avoid burns.

- Open the drain valve: Locate the drain valve under the hot water tank and open it. Make sure to place a bucket or a basin under the drain valve to collect the water.

- Drain water slowly: Release water from the drain valve slowly and gently. Avoid draining too quickly to prevent creating excessive pressure that could damage the hot water tank.

- Drain an adequate amount of water: Drain the water until there is no water left in the hot water tank. This helps eliminate sediment, debris, and settled impurities in the tank.

- Check and tighten the drain valve: After draining, make sure to check and tighten the drain valve to ensure no water leakage.

Conclusion: Draining the hot water tank will help keep your family's water supply clean. During the process, users should proceed with caution and adhere to safety guidelines. If you're not confident or lack the necessary skills, seek the assistance of a professional technician or service provider to ensure safety and effectiveness.

Hope the information provided by Mytour Supermarket will be helpful to you.