What sits inside a Rp 68 million sauna, line by line

A dry sauna for two to three people starts at Rp 68,000,000. That's the number. Now here is where it comes from — line by line, including the line that usually shows up in week three, once it's far too late to re-budget.

Home sauna cost estimates rarely blow up because someone picked the wrong timber. They blow up over something printed in no brochure: the distance from the cabin to your electrical panel.

Home sauna cost: where the number comes from

The table below is for a 2–3 person indoor dry sauna. The left column isn't a marketing figure — it is the Rp 68 million sauna from our pricing page, added up from its parts. The right column is the same cabin in cedar, with a full glass wall and digital control.

The final figure always comes out of a site survey, not a table. But the table tells you something more useful than a single price: where your money can move.

Timber: species and volume, not just square metres

Two variables move here. Species — hemlock is the affordable end, thermo-aspen sits in the middle, cedar is the top — and cabin volume, which climbs fast because you are lining six surfaces, not one. A cabin 20% larger is not 20% more timber; it's usually more. We compare the species properly in best wood for a sauna.

Heater and controller

A 6 kW heater with a mechanical dial sits at the bottom. A 9 kW unit with an external digital controller, timer and scheduling sits at the top. The gap is real but undramatic — and heater sizing is the worst possible place to economise, for reasons below.

Insulation, vapour barrier, ventilation

Rp 5–9 million on things no guest will ever see. These are also the first three lines a cheaper quote deletes. In Bandung's climate — 750 m altitude, humid, evenings at 18–20°C — all three work harder than they would in Jakarta, because the temperature gradient across the cabin wall is steeper and it happens more often.

Glass

A standard tempered door is already in the bottom column. A full glazed wall facing the garden adds Rp 8–10 million and changes how the room feels more than any other single component. It is simultaneously the most optional line and the one clients approve most often.

Benches and joinery

This is where the actual handwork lives. Two-tier benches, radiused edges so they don't cut into your thighs, timber selected knot-free on every seating face — knots hold heat and will burn skin. No screw head appears on any surface you can touch.

Electrical work: the line that surprises people

A 6–9 kW heater does not go into a wall socket. It needs a dedicated line — three-phase or heavy single phase — pulled straight from the panel on its own breaker. If your panel is on the opposite side of the house, that's a long cable run. If your contracted PLN supply isn't large enough, you need a supply upgrade, and that is its own process with its own cost and its own timeline.

The Rp 3–12 million range in the table isn't us hedging. It's the genuine difference between two houses. The detail lives in sauna power requirements.

Installation and delivery

We fabricate in our own workshop, then assemble on site. What drives the labour number: access (narrow staircases are expensive), floor condition, and ceiling height. Delivery is included within Bandung city. Lembang, Dago, Cimahi or Padalarang typically add Rp 1–4 million depending on road access.

Running cost: the honest arithmetic

People rarely write this section because it needs numbers instead of adjectives. Here it is for an 8 kW heater.

Heat-up. A 2–3 person cabin from ambient to 90°C: roughly 40 minutes with the heater drawing near full load. 8 kW x 0.67 h = about 5.4 kWh.

During the session. Once it's up to temperature the heater doesn't run continuously — the thermostat cuts it. Assume roughly a 40% duty cycle. A 60-minute session: 8 kW x 0.4 x 1 h = about 3.2 kWh.

Around 8.6 kWh per session. At a household tariff of roughly Rp 1,450–1,700 per kWh — check your own bill, tariff bands differ — that's Rp 12,000–15,000 a session. Three sessions a week is about 112 kWh a month, or Rp 160,000–190,000 monthly.

That is not a frightening number. What's frightening is an undersized heater.

An infrared sauna is far cheaper to run — around Rp 2,500–3,500 a session — because it never heats the air. That's a genuine advantage. But it is a different product at 45–60°C, not a budget version of a 90°C sauna.

An ice bath chiller at 0.5–1 HP runs on standard 220V and needs no dedicated line. In Bandung it works less hard than it would in Jakarta: 18–20°C evenings mean the compressor cycles less. Budget Rp 90,000–180,000 a month, heavily dependent on your lid and insulation.

Why a cheap sauna gets expensive

There are Rp 30 million saunas on the market. We know exactly how that number is reached, because we've taken a few of them apart.

Thin timber. 8–10 mm panelling instead of 15 mm and up. Saves millions today. Thin wood moves more on every heat-cool cycle: it cups, it cracks around the fixings, benches flex under two adults.

No vapour barrier. This is the one that actually kills. Inside a sauna, water vapour is driven toward the walls. With no foil layer on the hot side, that vapour passes into the insulation, condenses on the cold side, and never dries. You'll see nothing at all for two years. Then you smell must — and the damage is inside the wall, not on a surface you can sand.

Undersized heater. A 4.5 kW heater in a room that needs 8 kW never reaches 90°C. It runs at 100% duty cycle forever, trying and failing. You pay more electricity for a colder sauna, and the element dies early. It's a saving that inverts its own sign.

No ventilation. With no inlet near the heater and no outlet on the opposite side, air doesn't move and the cabin never dries between sessions. Timber left damp 20 hours a day does precisely what you'd expect.

Add those four together and you get the pattern we see repeatedly: a cheap sauna feels fine in year one, suspicious in year two, and gets demolished in year three. Rp 30 million spent twice, plus removal, costs more than Rp 68 million spent once. That's arithmetic, not a sales argument.

The most expensive part of a sauna is the part you can't see. It's also the first part people delete to hit a price.

If your budget is below that

The honest answer: don't buy a cheaper dry sauna. Buy a different product.

An infrared sauna starts at Rp 42,000,000, plugs into 220V, needs no dedicated electrical work, and costs about a fifth to run. It isn't a 90°C sauna and doesn't pretend to be — but it's a complete product at its price rather than a compromised version of another one. A dry sauna value-engineered down to Rp 40 million is a compromise, and the compromise lives inside the walls.

If your number isn't clear yet, send photos of the room over WhatsApp. Free site survey and 3D layout in the Bandung area, and we'll quote after we've seen your panel — not before.