The short answer: between roughly $69 and $511 a year depending entirely on which type you own, at three sessions a week. A 1500 W portable costs about $94 a year in South Australia; a 6 kW traditional cabin costs about $511 in the same state. The wattage on the sticker decides almost everything, and it varies by a factor of four across the market.
Running cost is the number buyers either ignore completely or wildly overestimate. This guide maps the whole Australian market by type with the tariff arithmetic shown, then covers the costs that never appear in a running-cost article: the electrician, the consumables, the parts. If you only want the 1500 W calculation in detail, that lives in how much electricity a 1500W sauna uses.
The tariffs this rests on
Every figure below uses two published Australian rates. Finder put the national average residential usage rate at about 32 c/kWh (updated 2 September 2026). Canstar Blue put the national range at 24 to 45 c/kWh depending on state, distributor and tariff, with South Australia the highest at 43.7 c/kWh (May 2026).
Adelaide readers should use the higher column throughout. Victorians and Tasmanians sit nearer the bottom of the range, so scale accordingly: find the usage rate on your own bill, in cents per kWh, and the maths below works for any of them.
Cost by sauna type
| Type | Typical power | Session | Per year, national | Per year, SA |
|---|---|---|---|---|
| Portable dry heat | 1.5 kW | 55 min | about $69 | about $94 |
| Infrared cabin | 2.5 kW | 60 min | about $125 | about $170 |
| Steam generator | 6 kW | 45 min | about $225 | about $307 |
| Traditional cabin | 6 kW | 75 min | about $374 | about $511 |
Portable dry heat, 1.5 kW
The cheapest to run by a wide margin, for the simple reason that it is heating one person's worth of space rather than a room. A 55-minute session at full draw is 1.38 kWh, which is 44 cents nationally and 60 cents in South Australia. Three a week for a year comes to about $69 and $94 respectively.
Infrared cabins, roughly 1.6 to 3.5 kW
Australian listings span a real range. Kiva's Rise models are rated 1.6 kW for one person up to 3.5 kW for four; their Radiance Pro range runs 2.02 to 2.62 kW. Revel's infrared models sit between 1.96 and 3.38 kW. Clearlight's two-person Sanctuary lists 2,250 W, and Sunlighten's mPulse Believe lists 2,695 W (September 2026).
Sessions tend to run longer because the heat is gentler, which offsets some of the wattage advantage over a cabin. Taking 2.5 kW for an hour gives 2.5 kWh, about 80 cents nationally and $1.09 in South Australia.
Traditional cabins, 3.5 to 9 kW
The most expensive to run, and by a long way. Australian traditional cabins use Harvia stoves rated 3.5 to 4.5 kW for two-person models and 4.5 to 9 kW for four-person and larger (Revel and Kiva listings, September 2026). A 6 kW stove over a 75-minute session including the longer pre-heat a stone mass needs is 7.5 kWh: $2.40 nationally, $3.28 in South Australia.
What you get for it is a room, two or more people in it, and löyly. The cost per person drops considerably if two of you use it together, which is worth factoring before the annual figure puts you off.
Steam, around 6 kW
Steam generators sold in Australia are commonly rated 3, 6 or 9 kW depending on room volume, with one Australian listing covering rooms of 2 to 16 m³ across that range (September 2026). Sessions are shorter than a sauna, so at 6 kW for 45 minutes you get 4.5 kWh, about $1.44 nationally and $1.97 in South Australia.
The costs that are not electricity
The electrician, which only applies to some types
This is the largest non-obvious cost in the category and it lands entirely on the cabin side. Traditional stoves need a hardwired dedicated circuit: Kiva's Reset 4-person specifies 25 A, their Ritual outdoor cabins 25 to 30 A, and Revel's Solaris 4-person 32 A (September 2026).
What that costs depends on the distance from your switchboard and whether it has a spare pole, so only an on-site quote is meaningful. For rough budgeting, Australian electrician company guides put the add-on for a new dedicated circuit at roughly $150 to $500 on top of the base job, with published ranges of $150 to $300 and $200 to $500 (fazeelectrical.com.au, updated 1 September 2026; eroseelectrical.com.au, updated December 2025). Those are electrician business blogs rather than an industry body, and none of them quotes a sauna-specific figure, so treat the range as an order of magnitude rather than a quote. More detail in do you need a dedicated circuit for a sauna.
A 1500 W portable runs from a standard wall socket, so this line is zero.
Consumables and maintenance
Dry saunas are close to maintenance-free, which is the quiet advantage of the format. There is no water treatment, no filtration, no chemistry. You wipe surfaces down, keep the vents clear, and in a stone-stove cabin replace stones occasionally as they degrade under repeated heating.
Steam is the opposite. A wet room stays damp between uses, so mould management is an ongoing job rather than a hypothetical, and generators need descaling in hard-water areas. No Australian seller I checked publishes water consumption in litres per hour, which is a gap worth pushing on when you get a quote.
Replacement parts
On a portable, the parts that age are the heating element, zips, seams and frame joints. On a cabin, the heater and its contactor. Ask before buying whether individual components can be replaced or whether a failure means a new unit, because that answer changes the real cost of ownership more than any tariff does.
What actually drives your bill
Three things, in order. Wattage, which varies fourfold across the market. Session length, which you control. And your tariff, which varies by nearly a factor of two between the cheapest and most expensive Australian states.
Frequency matters less than people assume, because the numbers are small to begin with. Going from three sessions a week to five on a portable adds roughly $30 a year in South Australia. On a 6 kW cabin it adds about $170. The habit you want is affordable in either case; the type you buy is what sets the scale.
Work out your own cost in three steps
- Find the wattage on the sauna's spec sheet and divide by 1000 for kilowatts
- Multiply by your session length in hours
- Multiply by the usage rate on your bill in cents per kWh
- Multiply by sessions per year for the annual figure
- Every figure produced this way is a ceiling, since thermostats cycle the element
Frequently asked questions
How much does it cost to run a sauna in Australia?
At three sessions a week, roughly $69 to $94 a year for a 1500 W portable, $125 to $170 for a 2.5 kW infrared cabin, and $374 to $511 for a 6 kW traditional cabin, with the lower figure using the national average of 32 c/kWh and the higher South Australia's 43.7 c/kWh.
Are infrared saunas cheaper to run than traditional?
Yes, usually by half or more. Australian infrared cabins draw 1.6 to 3.5 kW against 3.5 to 9 kW for traditional stoves. Longer infrared sessions claw back some of that advantage, but at three sessions weekly the gap is still around $340 a year in South Australia on the figures above.
How much does a sauna add to your power bill?
Less than most people expect. A portable at three sessions a week adds about $8 a month in South Australia. A 6 kW traditional cabin adds about $43 a month in the same state. Both are smaller line items than most households assume before running the numbers.
What is the cheapest sauna type to run?
Portable dry heat, because it heats one person's space rather than a room. At 1.5 kW it uses roughly a fifth of the electricity of a 6 kW traditional cabin per session, and it needs no electrician, which removes an installation cost of roughly $150 to $500 that cabins carry.
Do saunas need servicing?
Dry saunas need very little: wipe-downs, clear vents, and occasional stone replacement in a stone-stove cabin. Steam rooms need ongoing mould management and generator descaling in hard-water areas. Ask any seller whether heating elements and other parts can be replaced individually before you buy.
Is it cheaper to run a sauna or go to a gym sauna?
Depends on your gym fee and how often you go, but the electricity itself is rarely the deciding factor. A home portable costs under $2 a week to run in the most expensive Australian state. The comparison that matters is purchase price against membership, not running cost against membership.
Where the Kiuas Dry Sauna sits on this
At the bottom of the running-cost table, at about $94 a year in South Australia for three sessions a week, and with no electrician line at all because 1500 W runs from a standard wall socket.
That is not an argument for buying it over a cabin. A cabin gives you two seats, a stone stove and löyly, and the roughly $420 a year difference in Adelaide is real but not decisive if you have the space and the budget. Where it matters is if a dedicated circuit is not available to you. Specifications are on the Kiuas Dry Sauna product page.
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