Commercial sauna heaters deliver 10.5kW to 26.6kW for large residential and commercial rooms over about 500 cubic feet, including gyms, spas, and clubs. Every unit is a Harvia electric heater engineered for high output and long daily run times. Use this guide to specify the right heater for a busy space.
- Calculate total volume. Big rooms need more output, so measure carefully and match the kW rating to the cubic footage.
- Plan for 3-phase power. Many of these heaters require 3-phase service, so involve an electrician early in your project.
- Consider duty cycle. For frequent daily use in gyms or spas, choose a heater rated for continuous commercial operation.
For smaller rooms see our 9kW sauna heaters, or compare every tier under sauna heaters.
Commercial Sauna Heater FAQ
What size room needs a commercial sauna heater?
Commercial sauna heaters suit large residential and commercial rooms over about 500 cubic feet, such as gyms, spas, and clubs. Smaller rooms are covered by our 9kW sauna heaters.
How powerful are your commercial sauna heaters?
Our commercial sauna heaters range from 10.5kW up to 26.6kW, so you can match the output to the size and daily demand of your room.
Do commercial sauna heaters need 3-phase power?
Many commercial sauna heaters require 3-phase power, so a licensed electrician should confirm your building service before you order.
How much do commercial sauna heaters cost?
Our commercial sauna heaters range from about $1,340 to $3,660, depending on the kW output, controls, and Harvia model you choose.
Can I use a commercial sauna heater in a large home sauna?
Yes, these heaters work well in large residential rooms over 500 cubic feet, as long as your electrical service supports the higher output. Compare all options under sauna heaters.
