Vertical and Horizontal Geysers: Choosing the Right Water Heater


In today’s fast-paced world, hot water is crucial in various daily tasks, such as showering, washing, and doing dishes. To cater to these demands, modern homes are equipped with geysers. Among the most prevalent options are Vertical and Horizontal Geysers.

This article will compare these two types, exploring their design, installation, energy efficiency, maintenance, and repairs, so you can make an informed decision and optimize your investment. Whether you’re building, renovating, or simply upgrading, understanding the distinctions between

Vertical and Horizontal Geysers will help you maximize your home’s space, energy savings, and convenience. Let’s delve into the geyser ecosystem and find the perfect fit for your requirements!

Difference Between Vertical and Horizontal Geysers

Definition of Vertical and Horizontal Geysers:

Vertical geysers are usually wall-mounted. Due to their upright shape, they are often placed in tight locations like restrooms or utility rooms. Tankless or storage tank geysers can be vertical, with the latter being more prevalent.

In contrast, the installation of horizontal geysers is intended to be done thus, often in a horizontal position on a wall or ceiling. They are typically installed in spaces with little wall space, like crawl spaces or attics, and have a wide, flat shape. Tankless horizontal geysers are less common than storage tank geysers. However, they can also exist.

There are many different sizes and capacities of vertical and horizontal geysers, and they can be powered by electricity, gas, or solar energy. The availability of a gas or power supply, the local climate, and energy efficiency considerations are only a few variables that influence the choice of fuel source.

Vertical and horizontal geysers’ design and installation requirements significantly differ. In contrast to horizontal geysers, which are broader and flatter and require more wall space but less floor area, vertical geysers are taller and narrower. Knowing the distinctions will let you select the ideal geyser for your unique requirements and available area.

Design and Installation:

The installation and design of vertical and horizontal geysers are fundamentally different. Here are some things to think about:

Vertical Geysers:

  • Dimensions: Vertical geysers have a cylindrical or rectangular shape and are tall and narrow. The top of the geyser is typically at ceiling height and positioned against a wall. The home’s population determines the geyser’s size and how frequently hot water is used. From 10 litres to 150 litres or more, vertical geysers come in a variety of sizes.
  • Installation: Any area with a suitable wall, such as the bathroom, kitchen or utility room, is a good candidate for a vertical geyser installation. For stability and safety, a special mounting bracket is needed. The height at which vertical geysers are typically built makes reaching the control and maintenance regions simple.

Horizontal Geysers:

  • Dimensions: Horizontal geysers are rectangular, more comprehensive, and flatter than vertical ones. Usually, they are mounted on a wall or ceiling with a long side parallel to the surface. The size of the geyser is determined by the available wall or ceiling space, as well as the hot water usage patterns. From 10 to 150 litres or more, horizontal geysers come in various sizes.
  • Installation: Crawl spaces, attics, and other spaces with little wall space are where horizontal geysers are most frequently installed. For stability and safety, a solid mounting bracket is necessary. The height at which horizontal geysers are commonly built makes reaching the control and maintenance regions simple.

It’s vital to remember that the installation requirements for vertical and horizontal geysers may change depending on the particular model and manufacturer. To ensure proper installation and secure operation of your geyser, always refer to the installation manual or employ a qualified plumber.

Energy Savings:

Both horizontal and vertical geysers’ energy efficiency has benefits and drawbacks. Here are some ideas to consider:

Vertical Geysers:

  • Energy Efficiency: Because less of their surface is exposed to the air, vertical geysers frequently require less energy than horizontal ones. This will eventually lead to less heat loss and cheaper energy costs.
  • Standby Heat Loss: However, standby heat loss, or the heat transferred from the hot water in the storage tank to the outside air when the geyser is not in use, can still happen to vertical geysers. This may account for up to 20% of the geyser’s total energy use.

Horizontal Geysers:

  • Energy Efficiency: Horizontal geysers frequently require less energy than vertical ones since they have a larger surface area exposed to the surrounding air. As a result, more heat will be wasted, thus raising your energy expenditure.
  • Standby Heat Loss: The standby heat loss that occurs in horizontal geysers can also be reduced by insulating the storage tank and tubes.

Choosing a geyser with the proper size and capacity for your household’s needs is essential. A too-big or too-little geyser could waste energy and money and quickly run out of hot water. Consider your geyser’s fuel source because some sources may be more energy- and environmentally friendly than others. Speak with a licensed plumber or energy auditor for tailored advice on choosing the most energy-efficient geyser for your home.

Services and Repairs:

Both horizontal and vertical geysers need maintenance and repairs in different ways. There are particular distinctions to take into account, though.

Vertical Geysers:

  • Maintenance: Vertical geysers need routine upkeep to ensure optimum performance and energy efficiency. This entails flushing the tank to remove silt accumulation, inspecting the heating element, and testing the pressure relief valve.
  • Repairs: Fixing leaks or drips, changing the pressure relief valve, and replacing a broken thermostat or heating element are common vertical geyser repairs.

Horizontal Geysers:

  • Maintenance: To ensure optimal operation and energy efficiency, horizontal geysers, like vertical geysers, require routine maintenance. This entails flushing the tank to remove silt accumulation, inspecting the heating element, and testing the pressure relief valve.
  • Repairs: Fixing leaks or drips, repairing the mounting bracket, and changing the pressure relief valve are all frequent fixes for horizontal geysers.

While the specifics may vary depending on the model and manufacturer, both types of geysers generally need the same upkeep and repairs. To guarantee your geyser’s safety and effective operation, it’s crucial to adhere to the manufacturer’s maintenance instructions and engage a qualified plumber for any repairs.


Size, design, installation, energy efficiency, maintenance, and repairs are crucial when choosing vertical or horizontal geysers. Examine each geyser’s merits and cons before picking.

Some families can employ vertical geysers, which are more space- and energy-efficient than horizontal ones. However, horizontal geysers offer more installation flexibility and may be better for larger households or those with unique needs.

Follow any geyser’s installation, maintenance, and repair instructions for safety and efficiency. Timers, thermostats, and insulation minimise energy bills.

Researching and choosing the right geyser for your home and following maintenance and energy efficiency best practices will provide you with years of reliable and cost-effective hot water.

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