South Island Plumbing

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Hot Water Cylinders

South Island Plumbing are hot water cylinder breakdown, replacement, upgrade & installation specialists.  We work with our clients to find the most suitable residential or commercial hot water solutions to meet their needs & budget installing throughout the South Island.

Working in conjunction with our partner brands South Island Electrical (Master Electricians) & The Heat Pump People, we can offer comprehensive solutions to a wide range of hot water, plumbing, drainage, heat pump & electrical requirements.

Hot Water Cylinder Options

South Island Plumbing provide extensive hot water cylinder options from electric & gas to heat pump hot water solutions including whole home heating solutions incorporating hot water.

Heat Pump Hot Water Cylinders

On average, over half of a home’s energy consumption is taken up by traditional hot water & heating, so when considering how to reduce energy costs & improve heating efficiency, it makes sense to turn to hot water heat pump technology.

Heat pump technology that revolutionised home heating in New Zealand can be just as effective and efficient at heating your home’s hot water.

Heat pump hot water cylinders use electricity far more efficiently than ordinary electric water heaters. By extracting heat from the ambient air, hot water heat pumps have a low cost of operation compared to gas or electric elements & with their supreme energy efficiency they are one of the most environmentally friendly sources of heating available.

“Consumer NZ research shows that a well specified and installed heat-pump water heater would reduce your hot water bill by two-thirds over standard electric water heating.”

Heat pump hot water cylinders can also connect to whole home heating solutions such as the Daikin Alterma system or the Mitsubishi Electric EcoDan creating the most cost-effective whole home package.

Daikin Altherma

Daikin Altherma Hydronic Heating Systems are highly flexible, energy efficient home heating systems. At the heart of the system lies an innovative air to water heat pump that provides hydronic heating and cooling all year round. Unlike traditional hot water heaters, the hot water does not stay in the storage tank, it is heated instantly as it passes through the tank. 

Daikin Altherma

There are several different options available to provide heating in your home and Altherma is compatible with all of them. The selected system can simply be connected to the Altherma unit. The below can be connected to your system:

  • Underfloor heating: possibly the best solution for new installations, maximum comfort and efficiency due to radiated heat and is unobtrusive.
  • Fan coils: able to heat and cool, cased or concealed units, individual control & easy installation
  • Radiators: traditional heating solution, low capital cost & easy installation

Mitsubishi Electric EcoDan

Ecodan is an advanced heat pump system that cleverly combines the hot water heating supply for a home with energy efficient whole home central heating; all through the same system.

With proven Mitsubishi Electric Technology, Ecodan is designed for New Zealand conditions; maintaining high performance during the winter months when heating is in high demand. Whether you need central whole home heating, hot water or both, Ecodan Hydrobox & Cylinder Systems can provide the perfect solution.

Electric Hot Water Cylinders

An electric hot water cylinder is a reliable, safe & affordable choice of home water heating.

If you’re looking for low pressure or mains pressure hot water cylinders, we have electric hot water cylinder options suitable for your home.  Whether you require a compact electric hot water heater to fit into a small space, a low-pressure electric water heater or an energy efficient electric hot water heater for outdoor installation, we have available solutions.

Outdoor Hot Water Cylinders

If you are looking to buy an outdoor hot water cylinder, we can help you. Many electric hot water cylinders are suitable for both indoor & outdoor installation.

If you are wanting to free up space inside your home for a large laundry, kitchen or extra storage cupboard, a hot water cylinder that can be installed outside your home might be the solution for you.

Hot Water Cylinder Breakdown, Repair & Maintenance

If your hot water cylinder is faulty or has stopped working you may need a repair, or if you are looking to increase your hot water capacity it may be time for a replacement cylinder. 

If you are experiencing any of the issues below, contact the team today, we have a 24-hour, 7 day a week service to get hot water back to your home or business as soon as possible

  • No hot water
  • Low pressure
  • Damage to your cylinder
  • Leaking cylinder
  • Low temperature
  • Constantly running discharge valves
  • Knocking noises

Hot Water Cylinder Upgrades

Do you have a leaky, low pressure water cylinder? Are you wanting to upgrade to a mains pressure hot water system? Or perhaps you are looking to increase your hot water capacity or change to a more environmentally friendly & energy efficient heat pump hot water solution.  We can guide you through all the available upgrade options to select the best fit for your lifestyle or business.


Chlorinated Water & Water Cylinders

Chlorinated water not only leaves a nasty taste in your mouth, but it is also corrosive on copper, brass, copper, galvanized iron, stainless steel pipes & fittings making them prone to leak. It can even wear away the protective alloy coating on heating elements causing them to fail.

“Chlorine is likely to be to blame for the failure of some hot water cylinders in Christchurch, according to a report issued by a University of Canterbury scientist. The analysis was performed by Professor Milo Kral on four hot water cylinders, from three different brands, that had suffered corrosion ‘pitting’.” For more information, click here to read Newshub’s report on hot water cylinder failures in Christchurch.

If you live in an area that has chlorinated water, such as Christchurch, it is advisable to check regularly for any signs of damage before leaks occur. Signs of possible corrosion include white build up (calcification) around fittings or blue-green stains in baths or sinks.

Left unresolved corrosion can lead to major leaks, structural damage & possibly even health issues caused by damaged pipes & fittings contaminating your drinking water.

If you are considering replacing your current system, or you require a new hot water cylinder for a house build, South Island Plumbing can provide a free quotation & customised solution, contact us on 03 354 4504 or complete an online contact form today.