Does flushing a water heater extend its life?

Author: Neha Kutch  |  Last update: Wednesday, February 25, 2026

Flush the tank regularly Over time, sediment can build up in the bottom of the tank and cause the unit to overheat. This can shorten the lifespan of the unit and lead to expensive repairs. To avoid this, it's important to flush the tank regularly. Most manufacturers recommend flushing the tank once a year.

Does flushing water heater extend life?

Water heaters are one of the most essential appliances in your home. They're a big investment, and most of our clients want to make sure they protect their investment for as long as possible. Performing annual maintenance on a tank-style water heater by flushing it will extend its lifespan.

How can I extend the life of my water heater?

Consider these tips for keeping your water heater functioning as long as possible:
  1. Perform maintenance checks. ...
  2. Flush the tank annually. ...
  3. Test the pressure-relief valve. ...
  4. Invest in an expansion tank. ...
  5. Inspect gas lines. ...
  6. Inspect the anode rod. ...
  7. Insulate your water heater. ...
  8. Invest in a water softener.

Is it really necessary to flush your water heater?

Ideally you should flush it once a year because sediment builds up on the bottom and can affect the water flow and heating efficiency. If you have an older water heater that's never been flushed, you could risk flushing away sediment that's preventing rust from expanding.

How to get your hot water heater to last longer?

If you're ready to learn more, let's discuss how to extend the life of your water heater.
  1. Invest in Adequate Insulation. ...
  2. Flush the Tank Regularly. ...
  3. Install a Water Softener. ...
  4. Add an Expansion Tank. ...
  5. Inspect the T&P Valve. ...
  6. Check the Anode Rod. ...
  7. Schedule Maintenance With Faster Water Heater.

Does a Water Heater Really Need to be Drained and Flushed?

What shortens the life of a water heater?

Sediment can build up over time in a water heater, shortening its lifespan. To prevent this, you should flush your water heater at least once per year. Flushing will help to remove any sediment that has built up and improve the efficiency of your water heater.

Why is my hot water suddenly not lasting as long?

It could be faulty parts in the water heating unit, an obstructed flue, the build-up of sediment or a malfunctioning temperature control. When dealing with these problems it is always best to call in the plumbing professionals.

Can flushing water heater cause problems?

"However if you decide to drain your heater after many years of not doing it, or all of a sudden you start using the heater more then normal, this sediment that has been plugging that tiny hole is flushed out, often resulting in a leak in a few days after.

How much does it cost to have a water heater flushed?

Expect a pro to charge you between $75 and $200 to come to your home to flush your water heater, depending on where you live. While this cost deters many homeowners from performing this annual maintenance, it can extend the water heater's lifespan by years, making it worth the additional cost.

How often should I change the anode rod in my water heater?

The frequency of anode rod replacement depends on several factors, such as water quality, usage patterns, and the type of anode rod installed. In most cases, we recommend inspecting and potentially replacing the anode rod every 3 to 5 years.

Can a hot water heater last 20 years?

Water Heater Lifespan

With proper maintenance, a tank water heater tank should last six to 12 years. A tankless water heater can last for more than 20 years. Check your water heater's warranty for the most accurate timelines.

Does replacing the anode rod extend the life of a water heater?

The water heater anode rod is a key part of keeping your hot water tank in good shape and extending its service life. Without regular replacement, however, you may risk excessive corrosion, leaks and damage to your plumbing system.

Should I drain my water heater after 10 years?

Usually if the heater hasn't been drained in 10 years draining it now won't help much but if you want to do it here are instructions. Turn the water off to the tank and turn the power to the heater. Then hook a hose onto the drain faucet at the base of the tank and open the drain.

How do I know if my water heater needs to be flushed?

Keep an eye out for debris suddenly showing up in your water. If you notice sediment or any brown sludge coming out of your faucet, that's probably an indication that it's time for a water heater flush. If you see any of these signs, it's a good indication that your water heater needs maintenance.

Is a 30 year old water heater safe?

Sometimes, you'll just need repairs, but serious issues call for replacement. For example, a 30-year-old water heater certainly needs to be replaced, but a younger one with a minor problem may be able to get by with some simple repairs.

Can I flush my hot water heater myself?

You can flush your water heater yourself if it's done on a regular basis. This guide will take you through the steps to drain and flush a gas or electric water heater. Learning how to clean a water heater is an essential part of maintaining your plumbing system.

How much does it cost for a plumber to check a water heater?

If so, you're probably wondering how much a maintenance visit will cost you. The cost of water heater maintenance ranges from $75 to $300+, depending on the following factors: What the plumber checks during a maintenance visit. Whether you choose a single visit or an annual maintenance plan.

How much does a heater core flush cost?

You will need tools like 50/50 pre-mixed coolant, an air compressor, and a cooling system vacuum fill tool. A heater core back-flush requires you to prepare the vehicle, perform the back-flushing process, and refill the cooling system. Prepare to pay between $100 and $250 for a professional heater core flush.

Is it better to flush or drain your water heater?

It is recommended that you flush your water heater at least once per year. Doing so will help to prevent the potential problems that sediment can bring over time. Typically, it takes one to two hours to flush a water heater. The size of your tank will impact the amount of time it takes to drain.

How do I know if my hot water heater is full of sediment?

Common signs that sediment buildup is significant include bubbling and gurgling sounds and diminished hot water when bathing, cooking, or cleaning. You may also notice water discoloration, a leaking pressure relief valve, or cracks in the tank or its connections.

Why do water heaters fail so quickly?

Heating elements can gradual breakdown if there is a mineral build up in the heating system. This is because mineral deposits can solidify, encasing the elements and forcing it to work harder to heat the water. This will lead to gradual wear out that will make the heating system have a shorter life span.

How to fix sediment buildup in a water heater?

Removing Sediment from a Water Heater
  1. Flush the unit. This will prevent sediment from building up inside the water heater. ...
  2. Perform a vinegar soak. ...
  3. Keep it at the right temperature. ...
  4. Install a water softener. ...
  5. Call a professional plumber.

Why does my hot water only last 8 minutes?

If your hot water runs out too fast, you may have an issue with: Too much hot water demand from multiple sources at the same time. Sediment build up inside of your water heater tank. A broken dip tube.

How long should hot water last in a shower?

The average adult uses about 10 gallons of water per shower (at a rate of 2 gallons of water per minute). If you assume that an 80-gallon tank has about 55 gallons of hot water to dispense before refilling, that means you have 27 or so minutes of total shower time before running out of hot water.

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