Draining a geyser is a useful maintenance task that helps remove sediment, improve heating efficiency and extend the lifespan of the unit. Over time, minerals and debris settle at the bottom of the tank, causing noise, slow heating and unnecessary strain on the system. Draining the tank clears these buildups and keeps the geyser working smoothly. The process is simple when approached calmly and safely, and it can be done at home with basic tools and patience.
- Preparing the Geyser for Draining
Before you begin, the geyser must be turned off to prevent damage or burns. For an electric geyser, switching off the power at the main distribution board ensures the element cannot heat while the tank is empty. If the geyser is connected to a solar or gas system, the heat source should also be turned off completely. Allowing the water inside to cool for a while makes the process safer. When the temperature has dropped, you can turn off the cold water supply leading into the geyser. This prevents new water from entering the tank while you work.
- Locating the Drain Valve and Attaching a Hose
Most geysers have a small drain valve near the bottom of the tank. This is where the water will exit when you open it. A standard garden hose usually fits securely onto this valve and directs the water away from floors or walls. Running the hose outside or into a floor drain helps avoid flooding. Making sure the hose is attached tightly prevents leaks. Once it is in place and the outlet is positioned correctly, the geyser is ready to release the stored water.
- Opening the Drain Valve and Releasing the Water
When you begin draining, open a hot water tap inside the house first. This allows air to enter the system, reducing pressure and helping the water flow smoothly. You can then open the drain valve slowly. Water starts flowing through the hose, sometimes carrying visible sediment or discoloration if the tank has not been serviced in a long time. Letting the tank empty completely ensures all loose particles escape. If the water flow slows down too much, gently tapping the tank or adjusting the hose angle can help release trapped debris.
- Flushing the Tank for Better Cleaning
After the tank has drained, flushing it improves the cleaning effect. Turning the cold water supply on briefly pushes fresh water through the tank and forces remaining sediment out through the hose. Allowing this flush to run until the water appears clear gives you a cleaner result. When you are satisfied, you can switch the cold water off again and close the drain valve securely. Ensuring the valve is tight prevents drips or leaks when the geyser refills.
- Refilling the Geyser and Restoring Power
With the valve closed and the hose removed, turn on the cold water supply to refill the tank. Leave a hot tap open inside the house while it fills. This allows air to escape and prevents pressure issues. When a steady stream of water flows from the tap, you can close it. Once the tank is full, restoring electricity or the heat source brings the geyser back into normal operation. The unit heats more efficiently after draining, and the water often feels cleaner and fresher. Regularly draining the tank every few months helps maintain performance and prevents long-term damage.
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