What Size Sauna Do You Need?
Start with how many people will sit in it, then make sure the heater matches the room.
Start with seats
Count the people who will use it at once on a normal night, not at the biggest party of the year. Urban Sauna names its Oasis models by seat count.
- The One: 4 by 6 feet, one person in a curved lounge seat
- Oasis 2: the same 4 by 6 feet, with seating for two
- Oasis 3: a 6 by 6 foot hot room for three
- Oasis 5: a 7 by 7 foot hot room for five
- Oasis 7: a 7 by 8 foot hot room for seven, plus a changing room
- The Legend: 8 by 18 feet overall, for a group, with a changing and cold plunge room
Leave room around the hot room
A covered porch keeps snow off the door and gives you a dry place for boots and towels. Oasis 3 and larger have one.
A changing room lets you cool down between rounds without going back to the house. Oasis 7 and The Legend have one, and a cold plunge fits inside it.
Check the yard
Measure the spot and compare it with the overall footprint, not the hot room: 4 by 6 feet for the two smallest models, up to 8 by 18 feet for The Legend. Your city's setback rules decide how close to the lot line it can sit.
Match the heater to the room
Heaters are sized by the volume of the room: length times width times height. A common guideline is 1 kW for every 45 to 50 cubic feet, with more for large glass and for an outdoor sauna in a cold climate. A heater that is too small heats slowly and struggles in January.
Urban Sauna sizes the heater to each hot room. Oasis 3 takes a 6 kW HUUM Drop or 6.6 kW IKI Pillar, and Oasis 5 takes a 9 kW electric heater.