Commercial Wood Sauna Heaters

Commercial wood sauna heaters that pair Nordic craft with performance: authentic heat, high stone mass and efficient combustion for a calmer, more luxurious heat bathing experience. Ideal for commercial suites (gyms, spas, hotels, retreats) and daily-run private saunas. 

Why Choose a Commercial Wood Fired Sauna Heater

With a commercial wood burning stove, industrial sauna heating meets heritage – engineered for large facilities with predictable recovery and long service life, while keeping the ritual intact: real flame and soft, composed löyly.

Soft, abundant steam

High stone capacity stores heat and releases a gentle, even burst – authentic löyly guests notice straight away.

Built for duty

High stone capacity stores heat and releases a gentle, even burst – authentic löyly guests notice straight away.

Efficient combustion

Clean burn and correct stone loading deliver steady temperatures with sensible wood use – practical, sustainable heat.

Operational control

Front-feed for compact sites, or tunnel-feed to stoke from a service room and keep the guest space composed.

Complete specification

Finnmark’s team of sauna specialists match output to room volume/duty cycle, recommends stone mass, and outlines flue, guards and make-up air for a clean, compliant install.

Trusted Nordic Brands – Commercial Wood Sauna Heaters

As the UK’s specialists in Finnish saunas, we only stock premium, Nordic-made commercial wood heaters backed by decades of sauna craft.

Brands we trust:

  • Narvi: Heavy-gauge fireboxes and generous stone capacity for predictable recovery in long service. Available in front- and tunnel-feed formats; built for regular firing.
  • IKI: Distinctive stainless constructions that maximise stone exposure for gentle, extended steam; models suited to larger rooms and premium presentation.
  • HUUM: Clean-burn engineering and high stone loads (e.g., HIVE-family wood stoves) for soft, even löyly with efficient fuel use.
  • Tulikivi: Soapstone heat-retention solutions and selected heater models that hold a calm, even climate for unhurried sessions.

If you’re unsure which option is right for you, our team can assess your space, confirm duty cycle needs, and match you with the best Nordic brand and configuration.

Speak To A Sauna Heater Specialist

FAQs

Commercial wood sauna heaters vs electric sauna heaters – which is best?

Neither is universally “best.” Commercial wood sauna heaters give authentic löyly and real flame for a premium feel, but they require fuel handling, ash management and a flue. Industrial electric heaters offer precise controls, timers/BMS integration and simpler daily operation with no chimney. Decide by room volume, duty cycle, staffing and brand experience – we’ll size and specify the right route for your site.

What is the typical lifespan of a commercial wood fired sauna heater?

Typically a decade or more with correct sizing and routine care. Longevity depends on duty cycle, fuel quality, stone loading, flue maintenance. Expect periodic consumables: stones (re-stack/refresh), door gaskets, grates, plus annual flue service to keep performance consistent.

Can commercial wood sauna heaters be used in outdoor cabins?

Yes – if detailed correctly. Use an insulated flue, provide outside/make-up air where required, maintain clearances to combustibles, and follow hearth/guard guidance. Seal the cabin, use commercial-grade stones, and weather-proof terminations. Send drawings and we’ll return a buildable spec.

How loud is a commercial wood burning stove in operation?

Very quiet. There’s no heater fan; you’ll hear a soft flame and occasional crackle. Most sound is the pour (steam burst) or guest movement. A properly sized, well-installed flue avoids whistle/draught noise.

Is a commercial wood fired sauna heater energy-efficient/sustainable?

Yes – when specified and run correctly. High stone mass + clean combustion = steadier temperatures and sensible wood use. Seasoned fuel and correct airflow improve efficiency. Wood is renewable; overall impact depends on sourcing and site operations. We size the model and set stone load to keep consumption predictable.

We would love to hear from you.

If you'd like to talk about your sauna plans, or simply want some free help and advice, send us a message below or call us on+44 (0)20 8050 2895