Ever noticed your water heater making strange noises? Or maybe your hot water isn’t as hot as it used to be? That could mean your tank is filled with sediment, making it work harder than it should.
Draining your water heater is one of the best ways to keep it running smoothly. It helps remove all that built-up gunk, improves efficiency, and extends its lifespan.
But here’s the thing—you don’t want to take risks with such an important appliance. A poorly drained tank can lead to leaks, damage, and even total system failure. That’s why regular water heater maintenance is key.
In this guide, we’ll walk you through the process. You’ll learn how to flush a water heater, why it matters, and when it’s best to call a professional. Ready? Let’s start.
Why Draining Your Hot Water Heater Tank Is Important
Your hot water heater works hard every day to provide your home with warm water. But did you know that sediment buildup inside the tank can make it work even harder?
Minerals and debris settle at the bottom of the tank, reducing efficiency and increasing energy bills. Regular water heater maintenance can help:
- Improve heating efficiency.
- Extend the lifespan of the water heater.
- Reduce the risk of leaks and corrosion.
- Ensure cleaner water for daily use.
Failing to drain your tank can lead to long-term issues, such as overheating, rumbling noises, or complete system failure. If you notice these signs, it’s time to take action.
As a general rule:
- In areas with hard water (like Edmonton) – Drain every six months to prevent excessive sediment buildup.
- For moderate water hardness – A yearly flush is typically enough.
- If you hear unusual noises – It’s a sign of significant sediment accumulation, and a flush is overdue.
Preparing To Drain Your Water Heater Tank Safely
Before starting, safety should be your priority. Here’s what you need to do:
Turn Off The Power Or Gas Supply
- For electric water heaters – Switch off the breaker in your home’s electrical panel.
- For gas water heaters – Turn the gas control valve to the “pilot” position.
This step is crucial to avoid electrical hazards and protect the heating elements.
Turn Off The Cold Water Supply
Locate the cold water shut-off valve (typically found on top of the water heater) and turn it off to stop the water flow.
Allow The Water To Cool
Hot water can cause serious burns. Let the tank sit for two to three hours before draining.
Attach a Hose to the Drain Valve
Connect a garden hose to the drain valve at the bottom of the tank. Direct the other end to a floor drain, outside area, or bucket.
Open a Hot Water Faucet
Turn on a nearby hot water tap. This prevents a vacuum from forming inside the tank, allowing smooth drainage.
Draining The Hot Water Heater Tank
Once you’ve completed the preparation steps, it’s time to start the process:
1. Open The Drain Valve
Slowly turn the drain valve counterclockwise to let the water start flowing through the hose. If you notice slow drainage, sediment might be clogging the valve.
2. Check For Sediment Buildup
As the water drains, look for signs of cloudy water or small particles. This indicates how much sediment has accumulated inside the tank.
3. Flush The Tank
Once the tank is empty, turn on the cold water supply briefly to flush out the remaining debris. Repeat this step until the water runs clear.
4. Close The Drain Valve
Tightly close the drain valve once all sediment is flushed out.
5. Refill The Tank
Turn the cold water supply back on and allow the tank to fill. Keep the hot water tap open to release any trapped air.
6. Restore Power Or Gas Supply
- Electric water heater – Turn the breaker back on.
- Gas water heater – Relight the pilot light if needed.
Now, your water heater is clean and ready to provide optimal heating performance.
How Long Does It Take To Flush A Water Heater?
The time required for draining and flushing depends on the size of the tank and the level of sediment buildup. On average:
- Small water heaters (30-40 gallons) – Around 30-45 minutes
- Larger tanks (50+ gallons) – Up to 60 minutes
If significant sediment is present, the process can take longer. A professional technician can speed up the process and ensure thorough flushing.
Why You Should Hire A Professional For Water Heater Maintenance
While some homeowners attempt emptying hot water tanks themselves, it’s easy to run into problems like stuck valves, incomplete sediment removal, or leaks. A professional water heater maintenance service ensures:
- Safe and thorough sediment removal
- Inspection of critical components for wear and tear
- Prevention of leaks and costly damage
- Longer system lifespan and improved efficiency
At Nor-Can Heating & Air, we specialize in water heater maintenance and servicing in Edmonton. Our expert technicians ensure reliable, energy-efficient solutions tailored to your home’s needs.
Need professional water heater maintenance? Contact us today!
