IKI
IKI Float sauna heater
The IKI Float is a 13.8 kW heater that IKI rates for saunas of 530 ft³ to 883 ft³. Check it against your room, see how fast it heats and what it needs from your fuse box.
Updated Oct 18, 2026
Output
13.8 kW
Rooms
530 ft³–883 ft³
Stones
353 lb
Sizes
1
Which size fits your sauna?
Your room's effective volume
706 ft³
Best fit: 13.8 kW
Work out your effective volumeEffective volume = inside volume, plus 1.2 m³ for every m² of glass, tile or stone; × 1.5 for solid log walls (Harvia's rule, used by most planners).
Sizes and specifications
| Model | Output | Room range | Stones | Heat-up | Per session |
|---|---|---|---|---|---|
| Float 13.8 kW17683 | 13.8 kW | 530 ft³–883 ft³ | 353 lb | 55–70 min | $3.23 |
Heat-up and cost are our heat model's estimate for each size in a room at the middle of its range: indoor, insulated walls, 68 °F around the sauna, heated to 176 °F, one hour of bathing, electricity at $0.18/kWh (United States average).
Electrical connection
| Model | Supply | Current | Fuse / breaker | Cable |
|---|---|---|---|---|
| Float 13.8 kW | 3~ 400 V | 19.9 A | – | – |
Current is computed from the output; fuse and cable are shown where the maker or dealer states them. A licensed electrician sizes and installs the circuit following the heater's manual and local rules.
Where to see it
- Float 13.8 kW€3,269 at esaunashop.com (2026-10-18)
Prices and availability come from the shop or maker and change; their page is what counts. Shop offers are added as retailers join.
Sources
- esaunashop.com/electric-sauna-heater-iki-floatdealer · read 2026-10-18
Other heaters for the same rooms
Questions and answers
What size sauna does the IKI Float heat?
IKI rates the sizes for these rooms: Float 13.8 kW 530 ft³–883 ft³. Use your room's effective volume: add 1.2 m³ for every m² of glass, tile or stone, and multiply by 1.5 for solid log walls.
What fuse or breaker does the IKI Float need?
It depends on the size and your supply: Float 13.8 kW: 3~ 400 V: 19.9 A. A licensed electrician sizes the circuit from the heater's manual and local rules.
How long does the IKI Float take to heat up?
In a well-insulated indoor room at the middle of each size's range, our heat model gives: Float 13.8 kW 55–70 min to reach 176 °F. Outdoor saunas, glass and cold weather take longer.
How many stones does the IKI Float take?
As stated by IKI: Float 13.8 kW 353 lb. Use the stone size the manual specifies and re-stack the stones at least once a year, replacing crumbled ones.