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Wood-Fired Hot Tub

How to use the wood-fired hot tub at The Fernweh House — seasonal availability and operation guide.

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The wood-fired hot tub is one of those experiences that stays with you. Set under open sky beside the river, it takes a bit of patience to heat — and every minute of the wait is worth it.

NoteSeasonal availability: Mid-April through Early November. The hot tub is not available during winter months.

Step 1 — Fill the Tub

  • Close the drain valve (toggle perpendicular to the pipe)
  • Turn the left valve by the hillside to fill from the bottom
  • Fill to 6–8 inches from the top — takes approximately 40 minutes
  • Do not start the fire until the tub is full — the firebox can be damaged if heated dry

Step 2 — Start the Fire

  • Remove the stove lid
  • Layer paper/fire starter, then kindling, then medium logs
  • Light the tinder and let the kindling catch before adding larger logs

Step 3 — Heat the Water

  • Partially replace the stove lid with a gap for airflow
  • Keep a small, steady flame — no need to roar it
  • Stir the water often with the paddle for even heating
  • Water reaches 95–105°F in 90–120 minutes
  • Stop adding wood when the water reaches around 90°F — it will continue rising to ~104°F
  • The black thermal cover speeds up heating — keep it clear of the firebox

Step 4 — Soak

  • Stir occasionally to keep the water heating evenly
  • No bubbles, oils, soaps, or bath products — these damage the wood
  • Lights are controlled by the switch near the steps to the river

Step 5 — After Your Soak

  • Let the fire burn out completely — do not extinguish
  • Do not drain the tub — our cleaning team will handle this
  • Place the cover back on the tub
  • Water can be reused for up to 5 days
NoteThe right-side valve connects to a garden hose for rinsing the tub before filling and after draining.

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