18 kW Sauna Heaters
Every 18 kW heater we carry, across brands. This is commercial output for large rooms: clubs, gyms, spas, and private saunas built at that scale. Confirm the electrical supply before anything else.
Frequently asked questions
Do 18 kW heaters need three-phase power?
Often yes. The requirement is on each product page and should be confirmed with your electrician before you commit to the room.
What room size does 18 kW suit?
Large rooms well beyond domestic scale. The manufacturer's rated room size is on each page.
Can you help spec a commercial install?
We install in the San Francisco Bay Area and on the Peninsula with our own licensed crew: general contractor, electrical and HVAC in house, so there is no handoff between trades. Outside that area we ship and you arrange your own installer.
How do I pay?
Card or bank transfer (ACH), both at checkout. Stripe handles the payment, so your card details never reach us. A transfer takes a day or two longer to clear, and on a large order it is the one we prefer.