Gas vs. Electric Pool Heaters in Sydney's Eastern Suburbs: The Ultimate guide

Should I go gas or electric heater for my pool in Sydney Ausralia?

Dreaming of year-round swims in your Eastern Suburbs pool? Good on ya, mate! But with those chilly winter nights creeping in, you'll need a reliable pool heater to keep the water toasty.



Now, the big question is: gas or electric? Both have their pros and cons, so let's dive deep and help you make the right choice for your backyard oasis.

Gas Pool Heaters: Quick Heat, Higher Costs

Gas heaters are like the Usain Bolt of pool heating – they get the job done fast! Perfect for those impromptu pool parties or when you need to warm things up quickly. But keep in mind, they can be a bit thirsty when it comes to energy consumption.


Pros for gas pool heaters:


  • Speed demons: Gas heaters are the undisputed champions of speed when it comes to pool heating. They can raise your pool's temperature significantly faster than electric heat pumps, making them ideal for those times when you need to heat your pool quickly, like for a spontaneous weekend gathering or a last-minute dip. This rapid heating capability is especially beneficial in Sydney, where the weather can change quickly, and you might decide on a whim to take a dip even when it's not particularly warm outside.

  • Weatherproof: Whether it's a scorching summer day or a chilly winter night, gas heaters work consistently, regardless of the air temperature. This makes them a reliable choice for year-round swimming in Sydney, where the weather can be a bit unpredictable, with warm days sometimes giving way to cooler evenings.

  • Pool party power: Got a big pool or a spa to heat? No worries! Gas heaters have a high heat output, making them perfect for larger pools and spas where you need to warm up a significant volume of water quickly. This is particularly relevant in the Eastern Suburbs, where many homes have spacious pools and outdoor entertaining areas.

  • Occasional use: If you're not a daily swimmer or only use your pool during certain months, a gas heater can be a good option. You can fire it up when needed and turn it off when not in use, potentially saving on running costs compared to a continuously running heat pump. This can be a smart choice for those who primarily use their pool during the warmer months but want the option to extend the swimming season a bit with occasional heating.

Cons for gas pool heaters:



  • Pricey power: Gas heaters can be expensive to run, especially with the fluctuating gas prices we often see in Australia. If you plan on using your heater frequently, be prepared for a noticeable increase in your energy bills. It's worth considering your budget and how often you plan to use the heater before making a decision.

  • Energy guzzlers: Gas heaters are generally less energy-efficient than electric heat pumps. They consume more energy to generate heat, which can impact both your wallet and the environment. If you're environmentally conscious or looking for ways to reduce your energy consumption, this is an important factor to keep in mind.

  • Shorter lifespan: On average, gas heaters have a lifespan of 5-10 years. This is shorter than electric heat pumps, meaning you might need to replace your gas heater sooner. It's worth factoring in the potential replacement cost when comparing gas and electric options.

Environmental impact: Burning gas produces carbon emissions, contributing to greenhouse gas pollution. If you're environmentally conscious, this is an important factor to consider. Electric heat pumps offer a greener alternative.


Estimated Running Costs for Gas Pool Heaters in Sydney:

On average, you can expect to pay anywhere from $250 to $600 per month to run a gas pool heater in Sydney. This is a rough estimate, as the actual cost will depend on factors like the size of your pool, how often you use the heater, and the fluctuating price of gas.


Electric Pool Heaters (Heat Pumps): Efficiency and Long-Term Savings


Electric heat pumps are like the marathon runners of pool heating – they're in it for the long haul! They're energy-efficient and can save you money in the long run, but they take a bit longer to heat the pool.


Pros for electric pool heaters in Sydney:


  • Energy misers: Heat pumps are incredibly energy efficient. They don't generate heat; instead, they extract it from the surrounding air and transfer it to your pool water. This means they use less energy than gas heaters, leading to lower running costs and a smaller environmental footprint. This can be a significant advantage in the Eastern Suburbs, where many residents are environmentally conscious and looking for ways to reduce their energy consumption.

  • Wallet-friendly (eventually): While the initial purchase price of a heat pump might be higher than a gas heater, you'll likely save money in the long term due to their lower operating costs. If you're a frequent swimmer or plan to use your pool for many years, the energy savings can really add up. This makes heat pumps a particularly attractive option for families who use their pools year-round or for those who want to maximize their swimming season.

  • Built to last: Heat pumps are known for their longevity, with an average lifespan of 10-15 years. This means you can enjoy years of warm swims without worrying about frequent replacements. This long lifespan can provide peace of mind and make heat pumps a more cost-effective investment in the long run.

  • Eco-warriors: Heat pumps are a more environmentally friendly option compared to gas heaters. They don't burn fossil fuels and produce fewer emissions, making them a better choice for those who want to reduce their carbon footprint. This aligns with the environmentally conscious values of many Eastern Suburbs residents.

  • Steady temperature: Heat pumps excel at maintaining a consistent pool temperature. Once your pool reaches your desired temperature, the heat pump will efficiently maintain it without using excessive energy. This is ideal for regular swimmers who want to enjoy a comfortable swim whenever they like, without worrying about fluctuations in temperature.

Cons for electric pool heaters in Sydney:


  • Slow and steady: Heat pumps are not known for their speed. They heat water gradually, and it can take 24-48 hours to raise your pool's temperature significantly. So if you need to heat your pool quickly for a spontaneous swim, a heat pump might not be the best option. However, if you plan ahead and maintain a consistent temperature, this shouldn't be a major issue.

  • Cold weather woes: Heat pumps rely on extracting heat from the ambient air. In very cold temperatures (below 10°C), their efficiency drops significantly. While Sydney's winters aren't extremely cold, you might notice a decrease in heating performance during the coldest months. If you're looking for optimal heating performance even in the depths of winter, a gas heater might be a more reliable option.

  • Higher upfront cost: Be prepared to pay more upfront for an electric heat pump compared to a gas heater. However, remember that the long-term energy savings can often offset this initial investment. It's important to weigh the upfront cost against the potential long-term savings when making your decision.

  • Power-dependent: Heat pumps require a reliable power source to operate. If your area experiences frequent power outages, this could disrupt your pool heating. However, this is generally not a major concern in Sydney's Eastern Suburbs, where power outages are relatively rare.

Estimated Running Costs for Electric Pool Heaters in Sydney:


Electric heat pumps are generally more energy-efficient, so their running costs tend to be lower than gas heaters. In Sydney, you can expect to pay around $60 to $180 per month to run a heat pump. Again, this is an estimate, and the actual cost will vary depending on usage and electricity tariffs.



Heater Type Average Monthly Cost (Sydney)
Gas Heater $250 - $600
Electric Heat Pump $60 - $180

Which Pool Heater is Right for You?

Still unsure which one to choose? Here's a quick cheat sheet:


Choose a gas heater for your pool in sydney if:


  • You need to heat your pool quickly.
  • You want reliable heating in all weather conditions, even during the coldest winter months.
  • You have a large pool or spa that requires a high heat output.
  • You only use your pool occasionally and don't need to maintain a constant temperature.


Choose an electric heat pump for your pool if:


  • You prioritise energy efficiency and long-term savings.
  • You live in a milder climate (like the Eastern Suburbs!), where temperatures rarely drop below 10°C.
  • You use your pool frequently and want a system that maintains a steady temperature.
  • You're looking for an eco-friendly option with fewer emissions.


Need a hand?


Choosing the right pool heater can be a tough decision. If you need expert advice or help with installation, Pool Runnings is here to help! We can assess your needs, recommend the best heating solutions, and ensure your pool is always ready for a swim, no matter the weather.


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