Choosing the right hot water cylinder for your home can be a daunting task, with so many different types, sizes, and brands on the market. To help you make an informed decision, we’ve put together a list of factors to consider when choosing a hot water cylinder.


One of the most important factors to consider when choosing a hot water cylinder is the size. The size you choose will depend on a number of factors, including the number of people in your household, your hot water usage habits, and the size of your home.

If you have a large family and use a lot of hot water, you’ll likely need a larger cylinder to ensure you always have enough hot water on hand. Conversely, if you live alone or with just one other person and use very little hot water, a smaller cylinder may be sufficient.


There are two main types of hot water cylinders: vented and unvented. Vented cylinders are connected to a cold water storage tank and rely on gravity to move water through the system. Unvented cylinders, on the other hand, are directly connected to the mains water supply and use pressure to move water through the system.

Unvented cylinders are generally considered more efficient and provide better water pressure, but they also require more complex installation and maintenance. Vented cylinders are simpler and more affordable, but may not be as efficient or provide as much water pressure.

Energy Efficiency

Hot water cylinders can be a major source of energy consumption in the home, so it’s important to choose a system that is energy efficient. Look for cylinders with high levels of insulation, as this will help reduce heat loss and keep your water hot for longer.

You should also consider the energy efficiency rating of the cylinder itself. Many modern cylinders come with an energy rating label that indicates their efficiency, with higher ratings indicating more efficient systems.


Hot water cylinders are typically made from either copper or stainless steel. Copper cylinders are the more traditional choice, and are generally less expensive than stainless steel. However, they are also more prone to corrosion and may not last as long.

Stainless steel cylinders are more durable and resistant to corrosion, but they are also more expensive. If you live in an area with hard water or have water with high mineral content, a stainless steel cylinder may be a better choice.


Of course, cost is always a factor when making any home improvement decision. Hot water cylinders can vary greatly in price, depending on the size, type, material, and energy efficiency of the system.

While it may be tempting to choose the cheapest option, it’s important to remember that investing in a high-quality, energy-efficient cylinder can save you money in the long run by reducing your energy bills and preventing the need for costly repairs or replacements.


Choosing the right hot water cylinder for your home requires careful consideration of a variety of factors, from size and type to energy efficiency and cost. By taking the time to research your options and consult with a professional plumber, you can make an informed decision and ensure that your hot water system provides reliable, efficient service for years to come.