Perform the Resistance Test — Access and Test the Element
Part of project
How to Replace an Electric Water Heater Heating Element · Step 3 of 9
In this video
Set your multimeter to the 200 ohms setting. Touch the red and black probes firmly to the two screw terminals on the water heater element. For a good, functioning element, the meter should display a low resistance reading, typically between 10 and 16 ohms (the video example shows 13.2 ohms). If the element is bad or burnt out, the meter will display 'OL' (Open Line) or a '1' on the far left, indicating infinite resistance and a broken circuit.
Goal: Measure the resistance of the element
Used in this video
- Multimeter (Multimeter: Digital) — Measuring the electrical resistance in ohms.
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FAQs
What are the most critical safety steps to take before attempting to replace an electric water heater heating element?
Always start by completely shutting off power to the water heater at your electrical panel to prevent electrocution. Next, shut off the cold water supply valve to the water heater to prevent it from refilling. Be prepared for residual hot water when draining the tank, and wear appropriate protective gear like gloves and eye protection.
Is a specialized heating element wrench truly necessary, or can I use a standard adjustable wrench for this job?
While an adjustable wrench might work for some elements, a specialized heating element wrench (like the Rheem PROTECH Dual Head Element Wrench) is highly recommended. It provides a better grip, reduces the risk of stripping the element's hex head, and ensures you can apply sufficient torque for proper sealing without damaging the tank or element.
How long should I expect this project to take, and is it genuinely suitable for a beginner DIYer?
This project is rated 'beginner' and typically takes 1-3 hours, not including the full water heater drain and refill time. Most of the time is spent on draining and refilling the tank, while the actual element replacement steps are straightforward if you follow the instructions carefully and have the right tools.
What should I do if I notice a leak around the new heating element after refilling the tank?
If you observe a leak, immediately turn off the water supply to the heater and shut off its power at the breaker. The leak is likely due to an improperly seated gasket or insufficient tightening. Drain some water (below the element level), then carefully tighten the element further, or if needed, remove it, inspect the gasket, apply fresh pipe thread sealant, and reinstall before refilling and rechecking.
Perform the Resistance Test — Access and Test the Element
Part of project
How to Replace an Electric Water Heater Heating Element · Step 3 of 9
In this video
Set your multimeter to the 200 ohms setting. Touch the red and black probes firmly to the two screw terminals on the water heater element. For a good, functioning element, the meter should display a low resistance reading, typically between 10 and 16 ohms (the video example shows 13.2 ohms). If the element is bad or burnt out, the meter will display 'OL' (Open Line) or a '1' on the far left, indicating infinite resistance and a broken circuit.
Goal: Measure the resistance of the element
Used in this video
- Multimeter (Multimeter: Digital) — Measuring the electrical resistance in ohms.
Frequently Asked Questions
What are the most critical safety steps to take before attempting to replace an electric water heater heating element?
Always start by completely shutting off power to the water heater at your electrical panel to prevent electrocution. Next, shut off the cold water supply valve to the water heater to prevent it from refilling. Be prepared for residual hot water when draining the tank, and wear appropriate protective gear like gloves and eye protection.
Is a specialized heating element wrench truly necessary, or can I use a standard adjustable wrench for this job?
While an adjustable wrench might work for some elements, a specialized heating element wrench (like the Rheem PROTECH Dual Head Element Wrench) is highly recommended. It provides a better grip, reduces the risk of stripping the element's hex head, and ensures you can apply sufficient torque for proper sealing without damaging the tank or element.
How long should I expect this project to take, and is it genuinely suitable for a beginner DIYer?
This project is rated 'beginner' and typically takes 1-3 hours, not including the full water heater drain and refill time. Most of the time is spent on draining and refilling the tank, while the actual element replacement steps are straightforward if you follow the instructions carefully and have the right tools.
What should I do if I notice a leak around the new heating element after refilling the tank?
If you observe a leak, immediately turn off the water supply to the heater and shut off its power at the breaker. The leak is likely due to an improperly seated gasket or insufficient tightening. Drain some water (below the element level), then carefully tighten the element further, or if needed, remove it, inspect the gasket, apply fresh pipe thread sealant, and reinstall before refilling and rechecking.