Hot water is the plumbing most people only notice when it stops. In Christchurch, Selwyn and Waimakariri homes run on a mix of electric cylinders, some still on low pressure, newer mains pressure models, heat pump water heaters and LPG units. This section covers repairing and servicing what you have, replacing it when it is done, and keeping the water at your taps at a safe temperature.
If the water has gone cold, lukewarm or rusty, or the cylinder is leaking, start with a repair visit. If the unit is old and failing, compare replacement options before you decide. Running costs, upfront price and whether you already use gas all shape which system suits. A shower that suddenly runs scalding hot points straight to the tempering valve.
Our Hot Water Services
Hot Water Cylinder Repairs
Fixes cylinders and water heaters that have gone cold, run lukewarm, leak, trip the power or drip from the overflow.
View serviceHot Water Cylinders
Replaces an old, leaking or undersized cylinder with a new electric, gas or heat pump model sized to your household.
View serviceContinuous Flow Hot Water
Instantaneous LPG water heaters that only heat water when a tap opens, so a long shower never runs out.
View serviceHeat Pump Hot Water
Air source heat pump water heaters that use far less electricity than a standard element cylinder to heat water.
View serviceHot Water Servicing
A routine check of valves, element, thermostat and safety settings to keep a cylinder or water heater working longer.
View serviceGas Hot Water
Installs, replaces and repairs LPG water heaters, both storage units and continuous flow, for homes that already use gas.
View serviceTempering Valves
Fits, adjusts or replaces the valve that keeps bathroom water at a safe temperature while the cylinder stays hotter.
View serviceChoosing a replacement system
There is no single right answer, only the right fit for your home. A mains pressure electric cylinder is the familiar choice and gives strong, even flow at every tap. Heat pump units are dearer up front but use the least power, although it has to work harder through frosty Christchurch mornings because there is less heat in the air to collect. Continuous flow on LPG never runs out mid-shower and frees up cupboard space, but it means keeping bottles or a bulk tank filled, since the city has no natural gas.
Switching from one type to another takes longer than a like-for-like swap, because the pipework, power supply or gas connection may also need to change.
- How many people shower at the busiest time of day
- Whether the home already has LPG for cooking or heating
- Space in the cupboard and room outside for a heat pump unit
- Upfront budget compared with running costs over the years
Signs your hot water needs attention
Most cylinders give some warning before they fail completely. Catching these early can mean a repair rather than a flooded hallway cupboard.
- Water at the taps is cooler than it used to be or runs out sooner
- Rusty or discoloured hot water
- Constant dripping from the overflow pipe outside
- Damp floor, swollen skirting or a puddle near the cylinder
- Popping, rumbling or hissing from the unit
What affects the price
Heat pump, continuous flow and gas hot water installs are quoted once we know your current setup. The type of system, where it sits, and whether power or gas supply needs upgrading make the biggest difference to the final figure.
Hot Water Questions
How long should a hot water cylinder last?
It depends on the type, water use and how well it has been looked after. Regular servicing helps a cylinder reach the end of its expected life, while leaks, rust or repeated faults usually mean replacement is the better spend.
Is heat pump hot water worth it in Christchurch?
It uses the least electricity of the common options, which suits larger households over time. It does cost more to install and slows down on cold mornings, so we look at your usage before recommending it.
Why is my hot water too hot at the shower?
Cylinders store water hot enough to control bacteria, and a tempering valve brings it down before it reaches the bathroom. If the shower is scalding, that valve may be faulty or missing and should be checked.
Can I go from electric to gas hot water?
Yes, provided LPG can reach the house, whether from bottles, a tank or a street network, and the unit can be sited and flued properly. We check the supply, location and pipework as part of the quote.
Other Services
Hot Water Across Christchurch
We send hot water specialists to every suburb. Find your area: Central Christchurch, North Christchurch, East and Coastal Christchurch, South Christchurch and Port Hills, West Christchurch, Selwyn and Waimakariri.
