Burst Geyser

by | Sep 6, 2022 | Geyser Repairs

Hot water is a vital part of any home.  Most homes in South Africa have their hot water delivered using a geyser or hot water cylinder. A hot water geyser is a large tank that heats water to the desired temperature.  By means of a thermostat, the temperature of the water is controlled with ease.  The hot water geyser can be placed in the roof or can be located in a well-concealed position. 

Looking After Your Geyser

Geysers are common hot water solutions because they require minimal maintenance. Most geysers, when installed from new, come with a warranty that can range between 5 and 10 years depending on the manufacturer. A regular check of your geyser to feel for heat and check for any leaks is normally all that is required. Your geyser overflow is an important part of your hot water system and should be monitored.

Causes of a Burst Geyser

Burst geysers are common with old geysers that are generally more than 10 years old. Geysers are very tough systems but as they become older, they can fail.  There are three reasons that can cause a geyser to fail and burst.

1 Too Much Pressure

Just like a balloon bursts if you blow it too far, so a geyser will burst the same. When water heats up the pressure inside a geyser is increased. The overflow or drainage pipe acts as a safety valve in most cases and once a geyser cools down things settle back to normal. Where this fails and the pressure inside your tank increases the tank can burst. In some cases, geysers have been known to explode.

Avoiding Pressure Build Up

To save energy costs and reduce the chances of a burst geyser the temperature of your geyser should be set to no more than 60 centigrade.

You should have the valves of your hot water geyser checked at least twice a year. Your local plumber will ensure this is carried out correctly.

2 Sediment Causes Burst Geysers

In areas of hard water especially, sediment can settle at the bottom of the geyser. This sediment soon insulates the water from the heating element meaning the element has to work harder to heat the water. This means a geyser is running inefficiently,  may not heat your water fully, or can overheat the water causing a pressure build-up inside the tank.  

To prevent or reduce sediment build-up and reduce the chances of a burst geyser, a geyser should be fully flushed every 12 to 24 months. This is a service your local plumber can provide.

3 Corrosion

Although some modern geysers are made of other materials, most are made from steel. Steel and water are not a good combination and corrosion can set in. All metal geysers contain an internal anode rod to attract rust and slow the corrosion process. Once this rod has rusted almost completely your geyser will begin to corrode. Brown water will be your first sign that a geyser is corroding.

Burst Geysers

A burst geyser can be dangerous in some cases. The damage caused by a burst geyser can be serious and may or may not be covered by insurance. Plumbers respond quickly to burst geysers and a replacement is nearly always required. To prevent a burst geyser calling a plumber to assess and maintain your appliance is a worthwhile investment of time and money.