Most common instant geyser problems and their causes

Image Credits: Wikimedia Commons

An instant water geyser or heater is one of the most useful devices that a household or commercial building can have. It provides us with hot water instantly whenever we need and this water can be used for a varied number of everyday activities.  Instant geysers are usually powered by gas or electricity and mostly run without any problems. However from time to time some problems can crop up and need to be resolved immediately to continue availing the many benefits of these appliances. The following is a list of the most common instant geyser problems as well as their causes.

1. Insufficient hot water

PROBLEMS: The most common instant geyser problems include insufficient hot water.


  • One reason for this could be an undersized heater whereas some others include faults with parts such as electric thermostat, gas pilot, heating element or pilot control valve.
  • Sometimes, certain parts get loose due to continued use and this too could be the reason for inadequate hot water.
  • If you happen to identify the damaged part, you must either get it repaired or replaced.
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2. Excessively hot water

PROBLEMS: Another common instant geyser problem is excessively hot water.  If you hear sounds of boiling water then this means that water is getting too hot.  This may also result in emissions of steam or hot water from the faucets.


  • For this the pressure as well as temperature settings need to be checked and adjustments must be made wherever necessary.
  • This could be due to wrong placement of pressure valve as well.
  • If any of these parts are damaged, they must be replaced through a professional.
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3. Noisy instant geyser

PROBLEMS: In some cases, instant geysers become too noisy and this too can prove to be a big problem.  If you hear popping or rumbling noises coming out from the geyser then this means water boiling at the bottom of the water tank and is because of accumulation of sediment.


  • You can solve this by flushing the water heater.
  • If you hear loud high pitched whirring sounds then this is indicative of scale substance accumulation on the heating element.
  • You need to clean the tank to resolve this issue.
instant water geyser
Image Credits: Wikimedia Commons

4. Leaking instant geyser

PROBLEM: Another one of the common instant geyser problems is leakage.


  • Some of the common causes of water leaking from instant geyser include corrosion, overheating, excessive pressure and faulty plumbing etc.
  • In order to treat overheating, check the thermostat whereas for corrosion, call a professional for replacement.
  • Excessive pressure can result in temperature and pressure valves leakage.
  • Leaking valves must be changed immediately.
geyser repair
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Now that you know the most common instant geyser problems as well as their causes, you can solve the issues either on your own or by contacting a professional electrician. There are many experienced ones available and you can contact one by reaching out to Mr Right for any repair or geyser demo and setup services.

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