External Hot Water Cylinders Wellington

External hot water cylinders are an ideal solution for Wellington homes looking to improve energy efficiency, free up indoor space, and enhance overall system safety. Designed to operate outdoors, these cylinders are purpose-built to withstand Wellington’s coastal climate while delivering reliable hot water performance year-round.

Southern Plumbing supplies, installs, and replaces a full range of external hot water cylinders, including mains-pressure, low-pressure, and energy-efficient models. Our licensed plumbers ensure each installation meets New Zealand building and safety standards, with careful attention to pipework, insulation, seismic restraint, and long-term durability.

Whether your existing cylinder has failed, is leaking, or no longer meets the demands of your household or business, our team can assess your system and recommend the most suitable external unit for optimum performance. We also offer upgrades from internal to external cylinders—freeing up valuable indoor space and reducing the risk associated with indoor water leaks.

With Southern Plumbing, you receive trusted advice, high-quality products, and professional installation backed by decades of local experience. For external hot water cylinders in Wellington, we provide dependable solutions that deliver comfort, efficiency, and long-term peace of mind.

External hot water cylinders are good for households which require extra space. A hot water cylinder occupies a lot of space inside the house, but with the external hot water cylinders, you can use that space efficiently. There are water tanks designed especially for external use and the casing is waterproof.

Dux, Parex, and Rheem  and Rinnai manufacture external hot water heaters. They are available in a wide range of sizes. The most popular models are around 180 litres for standard domestic use.