Choosing the right hot water system isn’t just about convenience—it’s about cost, comfort, and how you live. Here’s something to think about: hot water heating makes up around 30% of the average Auckland household’s energy bill. That’s not a small change.
So if you’re weighing up gas versus electric, you’re not just picking a box—you’re making a decision that could impact your power bills, your lifestyle, and even your future renovations.
Let’s break it down properly. No jargon. No sales pitches. Just real, practical advice to help you choose what’s best for your home.
1. Cost to Install: Which Is Cheaper Upfront?
Let’s start with the money talk.
Electric hot water systems are usually cheaper to install. They’re straightforward, don’t need gas connections, and fit easily into most Auckland homes. If you’re building new or replacing an old system quickly, electric is often the faster, more budget-friendly choice.
Gas systems, on the other hand, cost a little more to install—especially if you don’t already have a gas line. But if you’ve already got gas at your property, upgrading to a gas hot water system can make a lot of sense.
Action step: Check if your home already has a gas connection. If not, factor in the extra cost of running a new gas line when planning your budget.
2. Running Costs: What Will You Pay Over Time?
Upfront costs are one thing. Running costs are another beast entirely.
Gas systems tend to be cheaper to run day-to-day, especially natural gas systems. They’re efficient and don’t chew through electricity like older electric cylinders can. If you have a larger household (think four or more people), gas can save you serious dollars over the long term.
Electric systems, especially older models, can be expensive to run—particularly if you’re using hot water during peak times when electricity rates are higher. Newer, more energy-efficient electric systems have closed the gap somewhat, but gas still often comes out ahead.
Action step: Look at your current power bills. If you’re already paying through the roof for electricity, gas might be the smarter move.
3. Performance: Which Gives Better Hot Water?
Imagine this: it’s the middle of winter. You jump in the shower. And the hot water runs out halfway through. Nightmare, right?
Gas hot water systems (especially continuous flow or “instantaneous” ones) provide hot water on demand. That means you can enjoy endless showers—perfect for busy Auckland households where everyone needs to shower at once.
Electric systems rely on storing hot water in a cylinder. Once that tank’s empty, you’re out of hot water until it heats up again. If your family loves long showers or you often have guests, this could be a real pain.
Action step: Think about your household’s hot water habits. If constant, reliable hot water matters, gas has a serious edge.
4. Environmental Impact: Which Is Greener?
This one’s tricky—and it depends on how your electricity is generated.
Electric hot water systems can be very environmentally friendly if you’re using renewable electricity sources, which are growing fast in New Zealand. Plus, adding solar panels can make an electric system practically carbon neutral.
Gas systems burn natural gas or LPG, which is a fossil fuel. While modern gas systems are highly efficient, they still have a carbon footprint.
Action step: If reducing your home’s carbon impact is a priority, and you have or are planning solar, an electric system could be the way to go.
5. Space and Placement
Another big practical factor—space.
Gas continuous flow systems are compact. They mount on the wall and take up very little room, freeing up valuable space inside your home or garage.
Electric hot water cylinders are bulkier. They need a decent spot inside your home or outside in a weather-protected area.
Action step: Think about where you’ll physically put your system. If space is tight, gas could make a big difference.
Final Thoughts: Which System Wins?
There’s no one-size-fits-all answer. It all depends on your needs, your budget, and your lifestyle.
- If you want lower running costs, endless hot water, and have gas available—go gas.
- If you want lower upfront costs, flexibility with renewable energy, and a simpler install—go electric.
Still not sure? That’s what we’re here for!
At Response Plumbing, we help Auckland homeowners choose the perfect system every day. We’ll assess your current setup, your hot water needs, and your budget—and give you honest, expert advice without the jargon.
Ready to upgrade your hot water system?
Get in touch today and let’s find the right fit for your home!
