Harvia
Harvia 50 wood-burning sauna stove
Harvia makes the 50 wood stove in 2 versions for saunas of 706 ft³ to 1,766 ft³. Slide to your room size to see which one fits and how fast it heats.
Updated Oct 18, 2026
Output
not published
Rooms
706 ft³–1,766 ft³
Stones
265 lb
Sizes
2
Which size fits your sauna?
Your room's effective volume
1,236 ft³
Best fit: 50
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 | Firewood per session |
|---|---|---|---|---|---|
| 50WK500 | – | 706 ft³–1,766 ft³ | 265 lb | 20–25 min | 21 lb |
| 50 SLWK500SL | – | 706 ft³–1,766 ft³ | 265 lb | 20–25 min | 21 lb |
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). The maker does not publish this stove's output; the heat-up times use a rough figure from its room range.
Where to see it
- 50€4,602 at esaunashop.com (2026-10-18)
- 50 SL€4,831 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/harvia-50dealer · read 2026-10-18
- esaunashop.com/harvia-50-sldealer · read 2026-10-18
Other heaters for the same rooms
Questions and answers
What size sauna does the Harvia 50 heat?
Harvia rates the sizes for these rooms: 50 706 ft³–1,766 ft³; 50 SL 706 ft³–1,766 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.
How long does the Harvia 50 take to heat up?
In a well-insulated room at the middle of each size's range, our heat model gives about: 50 20–25 min; 50 SL 20–25 min to reach 176 °F. The maker does not publish the output, so treat these as rough; firing and wood make a big difference.
How many stones does the Harvia 50 take?
As stated by Harvia: 50 265 lb; 50 SL 265 lb. Use the stone size the manual specifies and re-stack the stones at least once a year, replacing crumbled ones.