Water Heater vs Geyser – Difference Between the Two

The terms water heater and geyser are often used interchangeably. But, how many of us know that there is a slight difference between the two? In our article, we have discussed both water heaters and geysers and also highlighted the differences between the two terms. So, without much ado, let’s get started.

Difference Between Geyser and Water Heater

What is a Water Heater?

Water Heater

As the name suggests, a water heater is referred to a system that is designed to heat water. You will be surprised to know that a water heater is not an isolated appliance. In contrast, it is an umbrella term used for any device that is capable of heating water. By this, we mean that an immersion rod, an electric kettle, an instant, or a storage geyser, etc., all fall in the category of water heaters.

A water heater is often used during the cold winter months. This is the time when the water temperature falls, and one either uses gas or electricity to heat water. However, one needs to be careful while using water heaters as these have a tendency to explode or cause burns when not handled properly.

What is a Geyser?

Geyser water heater

The term geyser has different meanings in different contexts. Traditionally, it is used for a hot spring with a surface opening that throws out hot water and air. Therefore, a geyser is not something artificial but a phenomenon that occurs naturally. It is usually present in areas with active volcanoes and is found in large numbers across the world.

However, in India, a water heater, especially the one installed in your bathrooms, is often termed a geyser. Therefore, a geyser is a type of water heater that supplies hot water for domestic use. It usually consists of a heating element that gets heated when electricity is passed through.

As a result, water gets heated for your consumption. These are of two types – an instant geyser and a storage geyser. One can choose either of the two depending on one’s requirements. However, we recommend opting for a storage geyser for better efficiency.

Comparison–Water Heater VS Geyser 

CriteriaWater HeaterGeyser
MeaningA water heater is any appliance or a system that is used to heat water, primarily used for household purposes.A geyser is a type of water heater that is installed in a house for a continual supply of hot water.   Traditionally, it refers to a hot spring that occurs naturally and oozes hot water and air from a surface opening.
Different TypesA water heater can be of numerous types, including an immersion rod, a geyser, an electric kettle, etc.A geyser is mainly of two types, a storage, and an instant geyser.
Word OriginIt is made up of two words – water + heater.It is derived from the Icelandic verb geysa, which means to gush. The Great Geysir in Iceland is one such example.


Now that we have discussed both water heaters and geysers, and the differences between the two, we hope that we were able to put the confusion regarding the two terms to some rest. If any doubt still prevails, please write to us in the comments below. We will get back to you as soon as possible.

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