One of the most common questions we get in winter is, should I stick with gas or switch to electric for my hot water? It usually arrives at the worst possible moment, standing beside a failed unit with the household showering at the gym, which is exactly why it is worth thinking through before the countdown starts. The honest answer has changed over the years as tariffs, technology and Perth’s energy landscape have shifted, and it now depends more on your household’s pattern than on any universal winner. Here is the comparison as we give it in driveways, without the sales gloss.
How each type earns its keep
The contenders divide by fuel and by strategy. Gas systems, storage or instantaneous, heat water quickly and recover fast after heavy use, which is why they have suited big busy households, and instantaneous gas heats only what you draw, eliminating standing losses entirely. Conventional electric storage heats a tank with an element, simple, cheap to buy, and historically run overnight on cheaper tariffs, with the drawback of slower recovery and continuous standing losses. The third contender changed the conversation, the heat pump, an electric unit that moves heat from the surrounding air into the water rather than generating it directly, producing hot water for a fraction of the energy of a conventional element, at the price of higher upfront cost and a preference for decent airflow around the unit.
The winter question specifically
Winter stresses the contenders differently. Gas instantaneous units shrug at winter demand, delivering endlessly at a higher gas burn per shower as incoming water cools. Gas storage recovers quickly between the morning and evening rushes. Electric storage feels winter most, colder inlet water and higher demand can outrun overnight heating in underszed tanks, producing the classic July complaint of hot water running out, which is often a sizing problem wearing a technology costume. Heat pumps work efficiently through Perth’s mild winter air, our climate is genuinely favourable for them, though they recover more slowly than gas and reward being sized and scheduled correctly for the household’s pattern.
The running cost reality
On pure running cost, the ranking in Perth today generally runs heat pump first by a clear margin, then a contest between gas and conventional electric that depends on your tariffs and usage pattern, with gas’s historical advantage narrower than it was as gas prices have firmed and electricity options, particularly for households with solar, have improved. That solar point deserves emphasis, a household with rooftop panels can run a heat pump or timed electric storage substantially on its own daytime generation, which rewrites the economics entirely and is the single biggest variable in the modern comparison. The right answer increasingly starts with a question, what is on your roof?
The practical fit factors
Beyond running costs, fit decides satisfaction. Household size and rhythm matter most, simultaneous showers and evening surges favour gas instantaneous or generous storage, while steady moderate use suits heat pumps perfectly. Existing infrastructure counts, a home without a gas connection faces real connection costs to choose gas, while a home with one already sunk that cost. Location and space matter for heat pumps, which want airflow and produce mild operating noise, worth siting away from bedroom windows. And replacement urgency is its own factor, a like for like swap is always the fastest path when a family is cold, which is precisely why the thinking is best done before the failure.
The direction of travel
It is fair to note which way the wind blows. Electrification is the clear trajectory of Australian energy policy and pricing, rebates and incentives have repeatedly favoured heat pumps, solar uptake keeps strengthening the electric case, and the long term outlook for gas pricing is nobody’s idea of a bargain. None of that obliges anyone to abandon a gas unit that suits their household today, but for a system you will own for a decade, the direction of travel belongs in the decision, and it is why our advice has gradually shifted from defaulting to like for like toward genuinely weighing the switch at replacement time.
Our driveway summary
If we compress it to guidance, large busy households with existing gas and simultaneous demand still get excellent service from gas, especially instantaneous. Most other households replacing a unit today should seriously price a heat pump, particularly with solar on the roof or planned, and treat conventional electric storage as the budget option it is. Whatever the choice, size it to the household honestly, site it well, and decide in autumn rather than mid failure. We install, service and repair all of the above across Perth, and our advice in your driveway will follow your household’s numbers, not a brand allegiance. Call Drains Plus before winter forces the question, and make the choice while it is still yours.
Two transition details are worth flagging for anyone switching fuels. Moving from gas to electric may involve switchboard capacity and a dedicated circuit, worth confirming with an electrician before committing, and moving away from a home’s last gas appliance opens the separate question of whether keeping the gas connection and its supply charges makes sense at all. Neither is a blocker, both belong in the quote conversation upfront rather than as discoveries on installation day.
