Tag Archives: drain a water heater

Keep Your Water Heater Running Smoothly with Routine Draining

Keep Your Water Heater Running Smoothly with Routine Draining

A working water heater is one of the most indispensable appliances for the smooth running of your home. Water heaters make everyday activities like doing the laundry, washing dishes and taking a shower easier or even fun, says Nelson Management.

However, like other essential systems in the homes, most homeowners ignore their water heater until it malfunctions. Only when they turn a hot water faucet and get a blast of cold water do they attend to their water heater?

Yet water heaters are not hard to maintain; all you need is a good understanding of a few simple steps and a fixed schedule. If you do these two things, your water heater will serve you well and exceed its projected lifespan.

In this post, we discuss the most essential maintenance step for the smooth operation of a storage water heater. To get the full value from your water heater, you should drain it periodically. How do you drain a water heater?

Draining your water heater

This maintenance step helps remove crud or mineral deposits that have settled at the bottom of the water heater tank. It improves the appliance’s performance and prolongs its life. Draining a water heater is easy. Here is how to do it.

How to drain and flush a water heater

Required tools: Garden hose, bucket or drain and screwdriver

Cut the power or gas supply

Before doing any maintenance work on your water heater, always ensure the power or gas supply is off.

Let the water cool

To avoid burns, you may want to wait until the water inside the tank has cooled. This step is optional, but you must take proper care not to get burned.

Connect garden hose

Look for the drain valve and connect a garden hose to it. The valve will be near the bottom of the water heater tank. Connect the other end of the hose to a bucket, flood drain or sump basin.

Close the cold water supply

You will see two water lines connected to the water heater. The cold water line should say “cold” or “in.” If it doesn’t, you may need to track the lines to see which goes to the water meter or pressure tank. That is the cold water supply; close it.

Open the TPR Valve

The TPR (temperature and pressure relief) valve can be found on the side of the tank, towards its top. Lift the flap to open the valve. That will allow air into the tank as water flows out of it. You may also open a hot water faucet on a floor above your water heater.

Open the drain valve

Open the drain valve at the bottom with the garden hose attached. If the water is still hot, avoid putting your hand or foot into it. Keep small children and pets out of the area. When the water stops flowing, the tank is empty.

Flush the water heater

Open the cold water supply with the drain valve still open. Cold water will flow into and out of the tank under pressure. This additional step ensures that any debris left inside the tank will be washed out. 

Repeat step 7

Close the drain valve and leave the cold water supply open until the tank is full. Open the drain valve and let the water flow out. That will ensure that the tank is clean.

Refill the tank

Close the drain valve and let cold water refill the tank.

Restore power or gas supply

Do not forget to reconnect your water heater to power or relight the gas. After this, wait until the water is heated to the desired temperature to ensure the water heater works.

How long does this process take, and how often should you do it?

On average, it should not take more than 30 minutes to drain a 50-gallon water heater. The actual amount of time it takes to drain your water heater will vary depending on:

  • Your home’s water pressure.
  • The amount of sediment inside the tank. If you have never drained the water heater, expect it to take longer.
  • How handy you are. A professional plumber will do it in less time than a homeowner.

How often you drain your water heater depends on the quality of the water entering your home. If your area’s water is hard or has a lot of sediments, you may have to do this step every six months. Otherwise, once a year is sufficient. A reputable plumber can help you make the right decision.

How to Drain a Water Heater Correctly

draining a water heater tank

Issues with your water heater are one of those home maintenance problems you never want to deal with. A malfunctioning water heater will bring many of the simple everyday things you take for granted in your home to a screeching halt.

When the water heater fails to work as it should or doesn’t work at all, taking a bath will go from being a pleasant experience to an ordeal you must endure. As Nest Finders Property Management points out, lack of warm water for household chores like washing clothes and dishes will make your life a lot harder than it needs to be.

But why do water heaters fail in the first place?

Most water heater issues are the result of not taking the small steps you need to ensure the health and efficient function of your water heater. One of the steps for keeping the water heater in your home in good working order is draining the water heater.

Why do you need to drain your water heater?

The reason is the water from the municipal supply looks clean to your eyes, but actually contains quantities of dissolved and suspended materials. Although these substances inside your water are harmless to you, they can present a problem for your water heater.

That is because as the water travels through the water heater and is heated to the evaporation point, its suspended or dissolved content is deposited inside the unit. These become sediment that lines the sides or bottom of the water heater and impedes its performance.

How does sediment affect the performance of your water heater?

  • The water heater has to work harder to heat water because the deposit creates an insulating layer between the water inside the unit and the heating element. 
  • There is a significantly higher risk of corrosion, leaks, and blockages. The lifespan of your water heater may be severely shortened by these sediments.
  • Due to the increased possibility of overheating, the risk of the tank exploding is higher. Chances that someone will get burned by excessively hot water also increase.
  • You will pay more for energy because your water heater will use up more energy. Furthermore, you will need to replace the water heater sooner than you expect.

How to drain your water heater

To prevent sediment buildup inside the tank of your water heater, you should flush the tank once every year. This simple measure will make it easier to avoid water heater repair emergencies and also help your water heater last longer. Here is how to flush a water heater.

  1. Turn off the unit’s heat source. If this is an electric water heater, you need to unplug the heater or find the breaker and flip the switch to the off position. For gas water heaters, turn them off by changing the temperature settings to vacation or pilot mode.
  2. Find the water supply valve – the inlet pipe that supplies cold water to the unit – and shut it off. To do this, turn the valve until it is at a 90-degree angle to the pipe.
  3. Find the drain spigot at the base of your water heater and connect a garden hose to it. The other end of the hose should be outside your home, where you want to release the water.
  4. To let air into the tank, open the pressure relief valve on the side of the water heater. This will allow the water in the tank to flow out when you open the drain valve.
  5. Turn the valve of the drain spigot at the bottom of the water heater. You should feel the water flowing through the connected garden hose; note that the water will be hot (do not let children or pets play in the water).
  6. Wait until the water stops flowing. Your tank is empty but not yet clean; the flow of water was not forceful enough to agitate the sediments at the bottom of the tank. Open the cold water valve to release a spray of water into the tank for 15-20 seconds.
  7. Repeat step six several times (3 – 4 times) until there are no more particles in the water. To check if the water is clean, run some of it into a clean (preferably white) bucket and inspect for particles.
  8. Close the drain valve, along with the pressure relief valve, and open the cold water valve to fill the water heater tank. Close the cold water valve and open both the pressure relief valve and drain valve to empty the tank one last time.
  9. Close the drain valve and disconnect the garden hose. Close the pressure relief valve on the side of the tank and open the cold water valve. If it is a gas water heater, return the unit’s heat settings to the previous position. For electric water heaters, plug the unit back into the wall or flip the breaker to the on position.