Electric Water Heater Repair and Replacement
Full Nelson repairs and replaces electric tank water heaters for homes without natural gas service or where gas line extension is not practical. Electric water heaters use immersion heating elements inside the tank rather than a gas burner, which eliminates the need for gas piping, venting, and combustion air.
How Electric Water Heaters Work
An electric water heater contains two heating elements: an upper element and a lower element. Each element has its own thermostat. In most residential electric water heaters, the elements operate in a flip-flop arrangement. The upper element heats first, bringing the top of the tank to temperature quickly so hot water is available at the fixtures. Once the upper thermostat is satisfied, power transfers to the lower element, which heats the remaining water in the bottom of the tank.
This design means both elements are rarely on at the same time, which keeps the electrical draw within the capacity of a standard 30-amp circuit. It also means the upper portion of the tank recovers first, prioritizing hot water availability.
Electric Water Heater Repair
Electric water heater problems are often isolated to one or two replaceable components.
Heating element failure
Elements corrode and burn out over time, especially in hard water areas where mineral scale coats the element surface. A failed lower element produces lukewarm water. A failed upper element produces no hot water at all. Elements are replaceable without draining the entire tank on most models.
Thermostat failure
Each element has its own thermostat. A failed upper thermostat prevents the unit from heating. A failed lower thermostat causes inconsistent temperatures. Thermostats can also trip their high-limit reset button, which is a safety feature that cuts power when the water temperature exceeds a safe threshold. If the reset button trips repeatedly, the thermostat or element needs attention.
Sediment buildup
Minerals settle on the tank bottom and bury the lower element. The element overheats trying to transfer energy through the sediment layer, shortening its lifespan and producing popping or rumbling sounds. Flushing the tank removes sediment and helps elements last longer.
Dip tube failure
A cracked dip tube lets cold incoming water mix with hot water at the top of the tank. You get lukewarm water at the faucets regardless of thermostat setting.
Anode rod consumption
The same sacrificial anode rod principle applies to electric units. Once consumed, the tank walls begin corroding from the inside.
Electric Water Heater Replacement
Electric water heaters typically last 8 to 12 years. When the tank develops a leak, replacement is necessary. Full Nelson removes the old unit, verifies the electrical circuit capacity, installs the new water heater, and connects plumbing and wiring.
Electric water heater replacement considerations include:
- Electrical capacity
Electric water heaters require a dedicated 240-volt circuit, typically 30 amps for standard residential units. Upgrading to a larger unit may require an electrical circuit upgrade.
- Physical dimensions
Tank height and diameter matter when the water heater sits in a tight closet, utility room, or crawl space. Full Nelson verifies clearances before ordering equipment.
- Energy factor (UEF)
The Uniform Energy Factor measures how efficiently the unit converts electricity into hot water. Higher UEF ratings mean lower operating costs. Standard electric water heaters have UEF ratings around 0.90 to 0.95.
- Recovery rate
How quickly the unit can reheat after heavy use. A higher wattage element recovers faster but requires adequate electrical service.
Why Full Nelson
- Family, Women, and Veteran owned since 2003
- Licensed, insured plumbers
- Element, thermostat, and anode rod replacement
- Up-front pricing before work begins
- 24/7 emergency service
- Expansion tank installation when required