In a city known for its southerly winds and damp winters, hot water is a necessity. At Paramount Plumbing & Gas, our licensed team of gas fitters have seen every hot water disaster Wellington can throw at a household. This guide is designed to help you navigate your next system upgrade and provide the straightforward, practical answers you’re actually looking for.
Copper vs. Stainless Steel: Which is Better in Wellington?
This is the most common question we get. The answer usually depends on your budget and your property.
| Feature | Stainless Steel Cylinders | Copper Cylinders |
|---|---|---|
| Pros | Doesn’t corrode; usually has a longer warranty. | Tried and tested; naturally antibacterial. |
| Cons | Higher upfront cost. | Prone to “pitting” in certain water types. |
| Best For | Long-term durability and high pressure. | Budget-friendly replacements. |
Each material presents a distinct set of benefits, but Paramount Plumbing & Gas can to equip you with the insights necessary for an informed choice.
Rapid Heating vs. Long-Lasting Reliability
The decision between copper and stainless steel ultimately hinges on individual priorities. Are you after a fast-heating shower in the morning, or does the prospect of a durable, long-term investment appeal more to you right now?
Copper cylinders, commonly found in Wellington households, are known for heating-up faster. However, stainless steel has grown more popular thanks to its durability and corrosion resistance. If you live on the Wellington coastline, stainless steel may be the better investment due to its resistance to the salt air and local water composition.
Determining the Right Size Tank
Choosing the right size is a balance between having enough water for everyone and not paying to heat a massive tank you never fully use.
This table covers the most common household setups in Wellington:
| Household Size | Cylinder Capacity | Best For |
|---|---|---|
| 1-2 People | 135L – 180L | Small units, apartments, or couples with low water use. |
| 3-4 People | 180L – 250L | Good for most family homes or 3 bedroom houses. |
| 5-6 People | 250L – 300L | Large families or homes with high-flow showerheads. |
| 6+ People | Continuous‑Flow Gas | Infinite hot water. Often better than a massive tank for big groups. |
Note that if you make the upgrade from an old low-pressure copper cylinder to a continuous‑flow gas system your water flow will be much stronger and you will likely use water faster.
How to Set the Hot Water Cylinder Temperature
In New Zealand, there is a “sweet spot” for cylinder temperatures. A recommended 60-65 degrees Celsius range is ideal for safety and energy efficiency.
Most cylinders come equipped with a thermostat, allowing users to set the temperature. However, adjusting temperatures should be approached judiciously, avoiding extremes that may compromise safety or comfort. Paramount Plumbing can also help you install and tempering valve to prevent potential scalding.
Commonly Asked Questions About Hot Water Cylinders
How Long Should it Take for a Hot Water Cylinder to Heat Up?
This is a common question we encounter. The pace of heating is influenced by various factors, such as the type of cylinder, its size, and the power source. Electric hot water cylinders typically take 60-90 minutes to reach the desired temperature.
Gas cylinders, on the other hand, often provide hot water within 30-45 minutes. Users need to consider these differences, aligning their expectations with the specific characteristics of their chosen system.
Why Is My Water Still Cold?
Insufficient heat could stem from issues ranging from gradual accumulation of sediment within the cylinder or a malfunctioning thermostat.
Sediment buildup within the hot water cylinder can gradually compromise its efficiency. Paramount Plumbing recommends watching for signs of sediment accumulation, such as discoloured water or unusual noises emanating from the system. Having a professional plumber flush your cylinder every 12–24 months will clear out any buildup.
If the case of a faulty thermostat, always call a professional service, like Paramount Plumbing, to accurately recalibrate your thermostat. A licensed gas fitter is also equipped to check the electrical connections and gas supply lines for potential issues.
Should I Smell Gas Near the Hot Water Heater?
No. You should never smell gas near your hot water heater, even a gas-powered system. If you detect the smell of rotten eggs or a sulfur-like odor near your unit, treat it as an emergency and call Emergency Services on 111.
Over time, the fittings connecting your gas supply to the heater can vibrate or corrode, leading to minor leaks. Sometimes the pilot light may have been extinguished by a draft or a vent issue, allowing unburned gas to escape.
Gas leaks are not a project for the weekend handyman. Only a professional gas fitter has the specialized equipment to make sure your system is compliant with safety regulations once fixed.
How Long Does a Hot Water Cylinder Last?
A well-maintained cylinder should last 10 to 15 years. However, this figure is contingent upon several factors, such as Wellington’s variable water mineral content, and a proactive maintenance approach can significantly influence your investment’s lifespan.
Signs your cylinder is failing include:
- Rusty water: A sign of internal corrosion.
- Small leaks: Check the base of the unit for dampness or “weeping.”
- Noises: Rumbling or popping sounds usually mean heavy sediment buildup at the bottom.
- Fluctuating temperatures: Often a sign the heating element or thermostat is on its way out.
Even small leaks and noises still deserve immediate attention. A minor repair or part replacement goes a long way, and saves you from a more expensive repair later.
Why Are My Utility Bills Increasing?
A spike in your power or gas bill is often the first sign of a struggling hot water system. Even a minor leak can waste a large amount of water and force your cylinder to constantly reheat “new” cold water. Check the thermostat settings to ensure they align with the desired temperature and look for any dripping valves or connections.
As a cylinder ages, sediment buildup can make it harder for the tank to heat the water. This means your system stays on longer and works twice as hard to do the same job. Regular flushing as preventative maintenance, can help restore the cylinder’s heating capacity.
The Role of Regular Maintenance
To maximise the longevity of your hot water cylinder, Paramount Plumbing & Gas recommends a routine maintenance schedule. Annual inspections can identify potential issues before they escalate and ensures all components are in optimal condition.
Be vigilant for rust or corrosion on the cylinder’s exterior and any excess water around the tank. Fluctuating water temperatures or reduced hot water supply can also indicate underlying issues that merit prompt attention.
Paramount Plumbing gas fitters are experts at both installing and repairing hot water cylinders. So whether you need a quick repair or a large-scale install, we can provide the expert service your home deserves. Take a look at our hot water cylinder selection here.
When to Seek Professional Intervention
In instances where the DIY diagnosis proves inconclusive, Paramount Plumbing stresses the importance of seeking professional intervention. Our trained technicians can pinpoint elusive issues and devise effective solutions right for you. A comprehensive assessment by our team ensures an accurate estimate, allowing Wellington homeowners to plan their repair and replacement budgets accordingly.
Paramount Plumbing: Your Experts in Hot Water Cylinders in Wellington
Let Paramount Plumbing & Gas be your partner – from understanding heating times to choosing between copper and stainless steel, we empower homeowners to make informed decisions.
Our gas fitters service following areas: Upper Hutt, Lower Hutt, Porirua, Johnsonville and Karori.
Whether you’re ready to request a free quote or have questions not addressed on our FAQ page, don’t hesitate to contact us.