Rheem Water Heater Error Code E2: How to Fix It

Medium 2-3 hours High Severity Verified June 2026
Error Code
E2
Brand
Rheem
Product Type
water_heater
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
2-3 hours
The Rheem water heater E2 error code indicates a failure with the lower heating element in your electric water heater. This means the bottom element that heats water isn't working properly, which can result in insufficient hot water or no hot water at all.
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Tools You'll Need

How to Fix Error Code E2

  1. Turn Off Power and Water Supply

    Never work on an electric water heater with power on - risk of electrocution. Allow water heater to cool for at least 2 hours before proceeding.
  2. Remove Access Panel

    Wear safety glasses when removing insulation as fibers can irritate eyes.
  3. Test the Lower Element with Multimeter

    Ensure power is completely off before testing - double-check with a non-contact voltage tester.
  4. Drain the Water Heater

    Hot water will come out initially - be careful of burns and ensure hose drains to a safe location.
  5. Remove the Faulty Element

    Some water may spill out when removing the element - have towels ready.
  6. Install New Heating Element

    Do not overtighten the element as this can damage the tank threads or crack the element.
  7. Refill and Test

    Ensure tank is completely full before turning power back on to prevent element damage from dry firing.

Parts You May Need

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When to Call a Professional

Call a professional plumber if you're uncomfortable working with electrical components, if the tank is leaking, if multiple error codes appear, or if you discover corroded wiring or damaged thermostats during inspection.

Frequently Asked Questions

How long do Rheem water heater heating elements typically last?
Rheem heating elements typically last 6-10 years depending on water quality and usage. Hard water with mineral buildup can reduce element lifespan significantly.
Can I replace just the lower element or do I need to replace both?
You can replace just the faulty lower element, but if your water heater is over 8 years old, it's often wise to replace both elements as the upper one may fail soon after.
Why does the lower element fail more often than the upper element?
The lower element works harder because it heats the majority of water in the tank and is more exposed to sediment buildup at the bottom, which can cause overheating and premature failure.
What wattage heating element should I buy for my Rheem water heater?
Check the label on your old element or the water heater specification plate. Most residential Rheem units use 4500-watt elements, but some smaller units may use 3500-watt or 5500-watt elements.
Will a bad lower element affect my water heater's efficiency?
Yes, a failed lower element forces the upper element to work overtime, resulting in longer heating times, higher energy bills, and insufficient hot water during peak usage.