Relight Pilot and Test Operation — Restore Gas and Relight Burner
Part of project
How to Flush a Water Heater to Stop Popping Noises · Step 9 of 10
In this video
Turn the gas supply valve back on. Set the control knob to the 'PILOT' position. Press and hold the knob down to allow gas to flow to the pilot. Use a long lighter or the water heater's igniter to light the pilot flame inside the combustion chamber. Continue to hold the pilot knob down for at least 30-60 seconds. This allows the thermocouple to heat up. Release the knob. If the pilot flame stays lit, the repair is successful. Turn the control knob to your desired temperature setting, and the main burner should ignite with a whoosh sound.
Goal: Confirm Successful Repair
- Using a torch to light the pilot is not recommended for safety reasons. Use a long-reach lighter if your unit does not have a built-in igniter.
Used in this video
- Lighter — Igniting the pilot light.
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FAQs
Why is my water heater making popping noises?
Popping noises typically indicate a buildup of sediment, like mineral deposits and rust, at the bottom of your water heater tank. This sediment traps water underneath, which then boils and creates steam bubbles that burst, causing the popping sound. Flushing your water heater removes this buildup, silencing the noise and improving efficiency.
How often should I flush my water heater to prevent sediment buildup?
It's generally recommended to flush your water heater once a year. However, if you live in an area with particularly hard water, you may benefit from flushing it every six months to prevent excessive mineral accumulation. Regular flushing extends your water heater's lifespan and maintains its efficiency.
What are the essential tools and materials I'll need for this project?
You'll primarily need a garden hose (like a GardenJoy PVC Garden Hose 5/8 in. x 75 ft.) long enough to reach a drain. A Milwaukee 4 in. x 1/4 in. Slotted Flat Head Screwdriver might be necessary to open some drain valves, and a NITECORE 4000 Lumens Tactical Flashlight is very helpful for visibility. Don't forget safety gloves (FIRM GRIP Heavy Duty Large Glove or similar) to protect your hands.
What are the most important safety precautions to take before I start flushing?
Always turn off the power or gas supply to your water heater first to prevent accidental operation and potential damage. Wear sturdy safety gloves (like Work Gloves or FIRM GRIP Heavy Duty Large Glove) to protect your hands, especially when handling the drain valve which can get hot, and be mindful of the hot water draining from the tank to avoid scalding.
Relight Pilot and Test Operation — Restore Gas and Relight Burner
Part of project
How to Flush a Water Heater to Stop Popping Noises · Step 9 of 10
In this video
Turn the gas supply valve back on. Set the control knob to the 'PILOT' position. Press and hold the knob down to allow gas to flow to the pilot. Use a long lighter or the water heater's igniter to light the pilot flame inside the combustion chamber. Continue to hold the pilot knob down for at least 30-60 seconds. This allows the thermocouple to heat up. Release the knob. If the pilot flame stays lit, the repair is successful. Turn the control knob to your desired temperature setting, and the main burner should ignite with a whoosh sound.
Goal: Confirm Successful Repair
- Using a torch to light the pilot is not recommended for safety reasons. Use a long-reach lighter if your unit does not have a built-in igniter.
Used in this video
- Lighter — Igniting the pilot light.
Frequently Asked Questions
Why is my water heater making popping noises?
Popping noises typically indicate a buildup of sediment, like mineral deposits and rust, at the bottom of your water heater tank. This sediment traps water underneath, which then boils and creates steam bubbles that burst, causing the popping sound. Flushing your water heater removes this buildup, silencing the noise and improving efficiency.
How often should I flush my water heater to prevent sediment buildup?
It's generally recommended to flush your water heater once a year. However, if you live in an area with particularly hard water, you may benefit from flushing it every six months to prevent excessive mineral accumulation. Regular flushing extends your water heater's lifespan and maintains its efficiency.
What are the essential tools and materials I'll need for this project?
You'll primarily need a garden hose (like a GardenJoy PVC Garden Hose 5/8 in. x 75 ft.) long enough to reach a drain. A Milwaukee 4 in. x 1/4 in. Slotted Flat Head Screwdriver might be necessary to open some drain valves, and a NITECORE 4000 Lumens Tactical Flashlight is very helpful for visibility. Don't forget safety gloves (FIRM GRIP Heavy Duty Large Glove or similar) to protect your hands.
What are the most important safety precautions to take before I start flushing?
Always turn off the power or gas supply to your water heater first to prevent accidental operation and potential damage. Wear sturdy safety gloves (like Work Gloves or FIRM GRIP Heavy Duty Large Glove) to protect your hands, especially when handling the drain valve which can get hot, and be mindful of the hot water draining from the tank to avoid scalding.