Cilindro 9 kW (built-in controls)
| Power | 9 kW |
| Fuel | electric |
| Rated room volume | up to 14.2 m³, no stated minimum |
| Stone capacity | 90.7 kg |
| Controls | built-in |
| Voltage | 240 V |
| Phase | 1 |
| Stated amperage | 37.5 A |
A dash means the publisher does not state that figure. Nothing on this page is estimated.
Specs read from Sun Valley Saunas Harvia Cilindro page, spec block states up to 500 cubic feet for 9 kW (max only, no min). Page stated ft3, converted to m3 on 2026-08-30. Retailer published.
The electrical arithmetic, ours
As briefing arithmetic, and ours alone: 9 kW over 240 volts is roughly 37.5 amps of load, and the 125 percent continuous-load rule points past 46.9 amps of capacity. The decision belongs to a licensed electrician working from your panel and local code, and this site publishes no wiring instructions.
No published price
Sun Valley page shows one price ($1,427 sale) across 6/8/9 kW variants without per-kW breakout, so no price is attributed to this variant. Redwood Outdoors listed a Cilindro 9kW package at $1,895 but marks it Discontinued and out of stock.
Rooms whose makers pair with this power
7 saunas in our database state a compatible heater range that includes 9 kW. The pairing is each sauna maker's own statement, not ours.
- Grandview 4-6 Person Canopy Barrel Sauna 4 person barrel
- Kuuma 4-6 Person Classic Barrel Sauna (Harvia Collection) 4 person barrel
- Lewisburg 6-8 Person Barrel Sauna 6 person barrel
- Barrel Outdoor Sauna - 6 Person 4 person barrel
- Cabin Outdoor Sauna - 4 Person 4 person cabin
- Canadian Timber Tranquility CTC2345W 6 person barrel
- Georgian Cabin Sauna CTC88W 6 person cabin
Where these numbers came from
Every figure above was read from 2 pages, listed here so you can check our reading rather than take it.
- Sun Valley Saunas Harvia Cilindro page, spec block states up to 500 cubic feet for 9 kW (max only, no min). Page stated ft3, converted to m3 (retailer published, read 2026-08-30)
- Redwood Outdoors Harvia Cilindro 9kW Heater Package, $1,895, marked Discontinued and out of stock (price evidence only) (retailer published, read 2026-08-30)
Who it suits, and who should skip it
Suits
- • Six person cabins, big glass and shed conversions: the room classes where mid-size stoves top out.
- • Buyers who want push-button sessions and a heater that holds temperature without tending.
- • Buyers who prefer a timer and a dial on the unit over a second box on the wall and the wiring it needs.
Should skip it
- • A small room. Oversizing wastes panel capacity and reaches temperature before the stones do their work.
How it sits in the field
Set against the rest of the database, the numbers place it. At 9 kW it sits above the 8 kW median of the heaters we track. The stated stone load of 90.7 kg sits at or above the 55 kg median of the models that publish one. Each comparison counts only the records that state the figure involved, and the arithmetic reruns on every build.
What the publisher states, and what it does not
Of the 9 facts we try to verify on every heater, the linked pages state 8 for this one.
Not published: a price.
That is a well-documented heater, and it is why our calculator can evaluate it instead of setting it aside.
Common mistakes with this class
Forgetting to price the stones
One listing ships with stones and controls, another is the bare stove at the same price. Until the contents are priced, the cheaper sticker is just the earlier bill.
Buying at the edge of the rated range
Heater makers publish a volume window and their own guidance says to land in the middle of it. A room at the top of this range heats slowly and runs the elements harder than a size up would.
Ignoring what glass does to the math
Glass and uninsulated surface count as extra volume under the makers’ published rules. A glazed door can move a small room a whole heater class. Run the real numbers, not the tape measure alone.
Closest alternative on power
VEVOR 9 kW 240V sauna heater is the nearest tracked heater by power rating.
| This model | VEVOR 9 kW 240V sauna heater | |
|---|---|---|
| Power | 9 kW | 9 kW |
| Fuel | electric | electric |
| Rated room | up to 14.2 m³ | 9–13 m³ |
| Voltage | 240 V | 240 V |
| Price | — | — |
Keep reading
- A worked example
The four person barrel scenario, sized end to end with the arithmetic shown.
- Run your room through the math
Your room’s effective volume against this heater’s published window, computed the way its maker says to.
- The electrical conversation
What a 240 volt heater circuit involves, so you can brief an electrician instead of discovering one.
- Every electric heater we track
The full electric column, each with its publisher’s own room rating and a dated price.