
For one heating, you use 2 to 3 bags of wood worth €6.99 - depending on use and insulation.
Around your hot tub of approximately 1000 liters to fully warm up, you have an average 2 to 3 bags of wood needed. One bag of wood costs approximately €6.99, which amounts to a total heating price of around €14 to €21 per session.
The exact costs depend on several factors, including:
Are you heating the hot tub? several days in a row, then the water is often still lukewarm. You then need less wood to get back to temperature, which saves costs.
Do you have a hybrid hot tub (with both wood and electric heating)? Then you can choose to heat up the water with wood, and then the temperature to be maintained with the electrical system. You can also use the set the start temperature higher, so you end up using less wood. Please note that this leads to additional electricity costs.
Do you have well-dried firewood lying around? Then, of course, you don't have to buy anything. In all cases, make sure that you clean and dry wood used for efficient combustion and optimal heat efficiency.