Hot Water Cylinders

Featuring the best hot water cylinders in New Zealand

Hot water cylinders are essential for heating water in homes and offices, providing a reliable and efficient hot water supply. Many different types of cylinders are available to suit the needs of your home or office. Several of these include Vented, unvented, single-coil, twin-coil, solar, thermal store, direct, and indirect cylinders. Only the best hot water cylinders in New Zealand are featured on ArchiPro, an important part of a broader range of hot water heating solutions you consider for your home.

Hot water cylinder types

Vented cylinders

Vented cylinders are typically connected to a cold water storage tank and are ideal for homes with sufficient loft space.

Unvented cylinders 

Unvented cylinders are connected directly to the mains water supply, offering higher water pressure and greater installation flexibility.

Single-coil cylinders

Single-coil cylinders feature one heat exchanger coil, suitable for use with a single heat source like a boiler.

Twin-coil cylinders 

Twin-coil cylinders have two heat exchanger coils, allowing integration with multiple heat sources, such as a boiler and solar panels.

Solar cylinders

Solar cylinders are specifically designed for solar water heating systems, often including a backup heating element.

Thermal store cylinders 

Thermal store cylinders store heat in water for later use, providing heating and hot water and integrating multiple heat sources.

Direct cylinders

Direct cylinders are heated directly by an electric immersion heater, independent of the central heating system.

Indirect cylinders

Indirect cylinders are heated via an external source, such as a boiler, through a coil inside the tank.

How to choose hot water cylinders

Choosing the right hot water cylinder involves considering your household size and hot water demand. Larger households, for example, may need capacities of 150-200 litres. Decide between vented cylinders, which require loft space and a cold water tank, and unvented cylinders that connect directly to the mains for higher pressure. There are also single-coil cylinders that suit single heat sources like boilers and twin-coil models that can integrate multiple sources, such as solar panels. Energy efficiency is crucial, so look for well-insulated cylinders that can connect to renewable sources. You’ll also need to assess installation space and water pressure needs and balance initial costs with potential long-term savings from energy-efficient models. Finally, choose a cylinder that fits your maintenance preferences and has a good warranty.

Ongoing maintenance

Maintaining a hot water cylinder is crucial for ensuring its efficiency, longevity, and safety. Regular inspection for leaks and corrosion, as well as testing the temperature and pressure relief (TPR) valve, are essential steps. The anode rod should be inspected every few years and replaced if it’s heavily corroded. Annually draining and flushing the tank helps remove sediment build-up, maintaining efficiency. Ensuring the thermostat is set to around 60 degrees Celsius and verifying its accuracy prevents scalding and reduces energy usage. Proper insulation of the tank and pipes improves energy efficiency. Additionally, having a professional inspect the cylinder annually can ensure all components, including the heating element or burner, are functioning correctly. Specific types of cylinders, such as solar or unvented cylinders, may require additional checks. These maintenance steps help ensure a reliable and efficient hot water supply for your household.

Other hot water heating products you might need

There are more than just hot water cylinders to consider for your hot water heating solutions. For example, boilers are a commonly used heating method that people have been using for years due to their durability and minimal repairs. However, if you want to take a more environmental approach, you can opt for solar hot water systems as a solution, which comes with the added benefit of lower energy bills. If you want hot water almost immediately, gas water heaters are an ideal choice.