COMMERCIAL SAUNA
HEATER SIZING CALCULATOR
WHAT SIZE SAUNA HEATER DO I NEED?
Enter your sauna's dimensions and cold surfaces to get the right heater power (kW). Estimates only; always confirm against the manufacturer's manual and a licensed electrician.
Your Sauna Space
The starting point for sizing is the room's volume. Enter the interior dimensions, or switch to enter the total volume directly if you already know it.
Cold Surfaces
Glass and exposed stone/concrete stay cold and pull heat from the room, so the heater must work harder. Enter the total area of each (skip if none). Do not include the floor.
Setting & Fuel
Uninsulated rooms — most outdoor and barrel saunas — lose heat faster and need more power. Choose a fuel type to filter recommendations, or leave it on Any.
Recommended Calore Heaters
Live pricing✓ Pricing synced live from the Calore store
Talk to a Sauna Specialist Prefer to talk it through? +1 (506) 308-0007Estimates only, based on the dimensions you enter and standard industry sizing guidance. Not a substitute for the manufacturer's specifications. Heater output, minimum room volume and required safety clearances must be confirmed in the product manual, and all electrical work verified by a licensed electrician. Pricing shown in CAD and synced from the Calore store where available.
