Sauna heaters by output

The ratings we cover in depth

These are the outputs with enough models in the dataset to be worth comparing side by side. Each page lists every model at that rating, the room volume its manufacturer rates it for, and the supply figures that manufacturer publishes — with the gaps left visible rather than filled in.

• 4.5 kW5 models · 4 brandsRated for 100–248 ft³3 publish a current draw
• 6 kW15 models · 5 brandsRated for 130–320 ft³12 publish a current draw
• 8 kW7 models · 2 brandsRated for 141–431 ft³6 publish a current draw
• 9 kW11 models · 4 brandsRated for 141–500 ft³10 publish a current draw

Every output in the dataset

The full census, including the one-off ratings. A rating without its own page has too few models to compare usefully; the heaters are still in the directory, and the closest bracket page lists anything within 0.9 kW of it.