Heating your Nordic hot tub year-round

The right heater turns a summer novelty into an all-year ritual. You have three options.

Internal wood-fired heaters sit inside the tub and warm the water directly — fast, off-grid, and beautifully simple. External wood-fired heaters free up seating and heat by convection. Electric heaters give you thermostat control and scheduling. Whichever you choose, a well-fitted insulated cover is what keeps the heat in between soaks — it does more for your running costs than any heater upgrade.