Helo
Helo Hanko sauna heater
The Helo Hanko is a 8 kW heater that Helo rates for saunas of 283 ft³ to 424 ft³. Check it against your room, see how fast it heats and what it needs from your fuse box.
Updated Oct 18, 2026
Output
8 kW
Rooms
283 ft³–424 ft³
Stones
71 lb
Sizes
1
Which size fits your sauna?
Your room's effective volume
353 ft³
Best fit: 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 |
|---|---|---|---|---|---|
| Hanko 8 kW | 8 kW | 283 ft³–424 ft³ | 71 lb | 25–35 min | $1.34 |
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
| Output | three-phase 400 V (per phase) | single-phase 230 V |
|---|---|---|
| 8 kW | 11.5 A | 34.8 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
- Hanko 8 kW€394 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-tylohelo-hanko-without-control-unitdealer · read 2026-10-18
Other heaters for the same rooms
Questions and answers
What size sauna does the Helo Hanko heat?
Helo rates the sizes for these rooms: Hanko 8 kW 283 ft³–424 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 Helo Hanko need?
It depends on the size and your supply: Hanko 8 kW: 3~ 400 V: 11.5 A, 1~ 230 V: 34.8 A. A licensed electrician sizes the circuit from the heater's manual and local rules.
How long does the Helo Hanko take to heat up?
In a well-insulated indoor room at the middle of each size's range, our heat model gives: Hanko 8 kW 25–35 min to reach 176 °F. Outdoor saunas, glass and cold weather take longer.
How many stones does the Helo Hanko take?
As stated by Helo: Hanko 8 kW 71 lb. Use the stone size the manual specifies and re-stack the stones at least once a year, replacing crumbled ones.