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
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Tools You'll Need
- Phillips screwdriver
- Multimeter
- Heating element wrench
- Garden hose
- Non-contact voltage tester
- Safety glasses
- Towels
How to Fix Error Code E2
-
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. -
Remove Access Panel
Wear safety glasses when removing insulation as fibers can irritate eyes. -
Test the Lower Element with Multimeter
Ensure power is completely off before testing - double-check with a non-contact voltage tester. -
Drain the Water Heater
Hot water will come out initially - be careful of burns and ensure hose drains to a safe location. -
Remove the Faulty Element
Some water may spill out when removing the element - have towels ready. -
Install New Heating Element
Do not overtighten the element as this can damage the tank threads or crack the element. -
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.