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Electric Hot Water System

Electric hot water heaters and systems are common but require  uncommon skills to properly install and service

Unlike tankless water heaters, electric water heaters use an insulated storage tank, which is basically an insulated steel shell with submerged heating elements, the necessary plumbing and a thermostat to maintain the correct water temperature. Electric water heaters are very reliable normally, but they do have occasional problems, which can include:

  • No hot water
  • Inadequate hot water
  • Rusty water
  • Water leaking from the tank shell or fittings

Before attempting any repairs on a water heater, prepare to do the job by

  • Turning off the  power to an electric water heater. Do this by turning off the circuit breaker or fuse powering the heater.
  • Shutting off  the water supply to water heater.

Possible problems with electric hot water heaters include

  • Capacity of unit is not up to demand
  • Damaged dip tube which could allow cold and hot water to mix inside  the tank
  • Crossed cold and hot water connections
  • Faulty electric lower or upper heating element
  • Faulty thermostat.
  • Lukewarm water during a shower may indicate a defective upper heating element.
  • Water turning cold during a shower may indicate a defective lower heating element.

Possible Repairs for the above faults may include:

  • Hot water heater is  being overtaxed by hot water  demands. The water heater should have 75% of its capacity as hot water (e.g., a 40 gallon WH should be used for a demand of 30 gallons).  In this case install a larger heater.
  • Undo the cold water inlet and pipe nipple and remove dip tub; check the condition and replace if required.
  • Check for crossed connection by turning off water supply to water heater. Open hot water tap at a faucet. If there is water flow, then the a cross connection exists somewhere. Check for a hot water line connected to a cold water connection on the water heater or appliances such as washer, dishwasher, faucet or shower valves.
  • Check for power and electrical continuity at the lower and upper heating elements. Replace water heating element if necessary. Clear tank of any sediment before replacing the element .
  • If  the elements test OK, check for power at upper electrical upper thermostat. If OK check lower thermostat. Replace as necessary

Call any of the numbers at the bottom of the page to schedule one of our experts services. We specilise in promt service at affordable prices.