We finally bought a house after many years. There is a lot to fix and one thing I wanted to finish before winter was getting the old sauna in the basement functional.
It was previously wood-fired and also had a small electric heater. Now all the heaters are gone and the chimney is closed as it is instead used for a newly installed stove on the entrance floor.
However, a couple of questions have arisen. I have measured the sauna and checked the size of the heater needed. I had to go up a size because the corner where the old wood stove stood consists of two stone walls that affect the size of the heater required. Then there is the ventilation, which according to information is not made in a way that suits an electric heater.
What has been suggested to me is:
1. Frame out and build a wall for the stone corner walls to avoid having to buy such a large heater.
2. Drill a hole through the sauna wall where the heater will stand and another hole up by the ceiling out to the same space as the lower hole (something about the air should exit into the same space it is taken from).
I want to avoid buying too large a heater as it's in the 5-year plan to completely remodel the entire area with sauna and shower later.
Since I don't know much about building an extra sauna wall in a corner or drilling holes through sauna walls, a couple of tips would be greatly appreciated.
1. If I drill the holes, should I insert a metal duct and also seal against the wood panel I assume?
2. If I frame out and insulate the stone walls...how do I actually do that?
Attached are a couple of pictures of how it looks down there today...