Why More Christchurch Homeowners Are Replacing Their Gas Hot Water Systems
If you’d asked us five or ten years ago what type of hot water system we were most likely to install, the answer would often have been a new gas continuous flow unit.
Today, things look very different.
At BC Plumbers, a significant amount of the gas fitting work we now carry out involves removing existing gas hot water systems and replacing them with electric or heat pump hot water systems, rather than installing new gas units.
That shift reflects a broader change in how Christchurch homeowners are thinking about hot water, energy efficiency and the future of their homes.
Why Are Homeowners Moving Away From Gas?
Every household has different priorities, but we’re seeing several common reasons why people choose to replace their gas hot water systems.
1. Rising Energy Costs
Many homeowners are paying closer attention to their household running costs than ever before.
While gas has traditionally been seen as an efficient option, changes in energy pricing mean many homeowners are now comparing the long-term operating costs of electric storage cylinders and modern heat pump hot water systems before replacing an ageing unit.
2. Ageing Gas Systems
Like any appliance, gas hot water systems have a finite lifespan.
As systems approach 10 to 15 years of age, repairs can become more frequent and replacement parts may become harder or more expensive to source. Rather than investing further in an ageing system, many homeowners decide it’s the right time to explore newer technologies.
3. Advances in Heat Pump Technology
Heat pump hot water systems have improved significantly over the past decade.
Modern systems use ambient air to heat water, making them substantially more energy efficient than traditional electric cylinders. For many households, they offer an attractive combination of lower running costs and reduced electricity consumption.
4. Home Renovations
Kitchen and bathroom renovations often prompt homeowners to reassess their plumbing and hot water systems.
If changes are already being made to the home, it’s often the ideal opportunity to replace an older gas system with a solution better suited to the property’s future needs.
5. Environmental Considerations
Many Christchurch homeowners are also looking for practical ways to reduce their household’s environmental impact.
For some, replacing a gas system with an electric or heat pump alternative aligns with broader goals such as installing solar panels, improving home insulation or reducing reliance on fossil fuels.
What Are People Replacing Gas Systems With?
There isn’t a single solution that’s right for every home.
The best replacement depends on your household size, hot water usage, available space and budget.
1. Electric Hot Water Cylinders
Modern electric cylinders remain a reliable and cost-effective option for many homes.
They’re generally straightforward to install, familiar to most homeowners and provide dependable hot water for a wide range of households.
2. Heat Pump Hot Water Systems
Heat pump systems are becoming an increasingly popular choice.
Although they typically involve a higher upfront investment, they use significantly less electricity than conventional electric cylinders and can provide substantial savings over time, particularly for households with higher hot water usage.
Our team can help determine whether a heat pump system is suitable for your property and explain the installation requirements.
Modern Heat Pump Hot water System
Should You Replace Your Gas Hot Water System Now?
Not necessarily.
If your existing gas system is operating reliably, efficiently and meeting your household’s needs, there may be no reason to replace it immediately.
However, if your system is becoming unreliable, requiring frequent repairs or approaching the end of its expected lifespan, it’s worth understanding the alternatives before an unexpected breakdown leaves you without hot water.
Planning ahead allows you to compare options, understand installation costs and choose the solution that’s best for your home rather than making a rushed decision during an emergency.
What We're Seeing Across Christchurch
One of the advantages of working with homeowners throughout Christchurch is that we see changing trends long before they appear in industry reports.
Five or ten years ago, replacing a gas hot water system with another gas unit was common.
Today, that’s becoming increasingly rare.
Instead, more homeowners are choosing electric cylinders or heat pump hot water systems that better align with their long-term plans, energy preferences and household budgets.
It’s one of the most noticeable changes we’ve seen in residential plumbing over recent years.
Thinking About Replacing Your Hot Water System?
Whether your current gas system is nearing the end of its life or you’re simply exploring your options, obtaining professional advice early can help you make an informed decision.
At BC Plumbers, we’ll take the time to understand your home’s hot water requirements, explain the advantages and considerations of each system, and recommend a solution that’s right for your household – not simply the most expensive option.
If you’re considering replacing your gas hot water system, contact the BC Plumbers team to discuss the options available for your Christchurch home.
FAQ's About Replacing Gas Hot Water Systems
Is it worth replacing a gas hot water system?
If your gas hot water system is ageing, unreliable or becoming expensive to repair, replacing it can be a worthwhile investment. Modern electric and heat pump hot water systems offer reliable performance, and heat pump systems can significantly reduce electricity consumption compared with traditional electric cylinders.
Can I replace a gas hot water system with an electric hot water cylinder?
Yes. Many Christchurch homeowners are choosing to replace older gas systems with electric hot water cylinders. The installation may involve plumbing and electrical modifications, so it’s important to have the work carried out by qualified professionals.
Can I replace my gas hot water system with a heat pump hot water system?
Absolutely. Heat pump hot water systems are becoming an increasingly popular replacement for gas because they use ambient air to heat water, making them highly energy efficient. Whether a heat pump system is suitable depends on your property’s layout and your household’s hot water demand.
How long does a gas hot water system last?
Most gas continuous flow and storage hot water systems have an expected lifespan of around 10 to 15 years, depending on usage, maintenance and water quality. If your system is approaching this age, it may be worth considering replacement before an unexpected failure occurs.
What are the signs my gas hot water system needs replacing?
Common signs include inconsistent hot water, reduced water temperature, frequent repairs, visible corrosion, unusual noises, error codes or increasing running costs. A qualified plumber can inspect the system and advise whether repair or replacement is the better option.
Is a heat pump hot water system cheaper to run than gas
Running costs depend on energy prices and household usage. However, modern heat pump hot water systems are generally among the most energy-efficient hot water solutions available and can cost significantly less to operate than conventional electric cylinders. Comparing them with gas depends on local energy tariffs and your household’s hot water demand.
Do I need a gas fitter to remove a gas hot water system?
Yes. Removing a gas hot water system involves safely disconnecting the gas supply and should only be carried out by a licensed gas fitter. If you’re replacing the system with an electric or heat pump unit, both plumbing and electrical work may also be required.
How long does it take to replace a gas hot water system?
Most straightforward replacements can be completed within a day, although more complex installations involving pipework changes, electrical upgrades or heat pump systems may take longer. Your plumber can provide an accurate timeframe after assessing your home.
Can I keep using gas for cooking if I replace my gas hot water system?
Yes. Replacing your gas hot water system doesn’t necessarily mean removing gas from your home entirely. Many homeowners continue to use gas for cooking while switching their hot water to an electric or heat pump system.
Does BC Plumbers replace gas hot water systems throughout Christchurch?
Yes. BC Plumbers provides gas hot water system replacement, electric hot water cylinder installation and heat pump hot water system installation throughout Christchurch and the surrounding areas. We can assess your current system and recommend the most suitable replacement for your home.